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<a href="#pub-types">Public Types</a> |
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<a href="#pub-methods">Public Member Functions</a> |
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<a href="#pub-static-methods">Static Public Member Functions</a> |
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<a href="../../d8/dcc/class_o_n___content_hash-members.html">List of all members</a> </div>
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<div class="title">ON_ContentHash Class Reference</div> </div>
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<div class="contents">
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<p><code>#include <<a class="el" href="../../d6/da3/opennurbs__file__utilities_8h_source.html">opennurbs_file_utilities.h</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:a5a6e077d6893727a93e91d3f1c9e847d"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">CompareResult</a> : unsigned char { <br />
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  <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dac9f88e098f6fe4e4e112eeb05ccb9671">CompareResult::Unset</a> = 0,
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<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9">CompareResult::EqualContent</a> = 1,
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<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da9c6b349504605b60c2709bd46525764d">CompareResult::DifferentContent</a> = 2,
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<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09">CompareResult::DifferentContentFileIsOlder</a> = 3,
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<br />
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  <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da0a64794cb339dc5c7ef05da3c63c60df">CompareResult::ContentDifferentFileIsNewer</a> = 4,
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<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847daab7e9f2fa8b2404bc25061dd572e9797">CompareResult::FileDoesNotExist</a> = 5,
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<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847daf6c4270bbdfbbf35aa42b5fd44edf750">CompareResult::FileSystemFailure</a> = 6
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}</td></tr>
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<tr class="memdesc:a5a6e077d6893727a93e91d3f1c9e847d"><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29">ON_ContentHash::Compare</a> are the possible results of calling ON_ContentHash::CompareFile(). <a href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">More...</a><br /></td></tr>
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<tr class="separator:a5a6e077d6893727a93e91d3f1c9e847d"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a4eda351919e955f7dfd8a3699750bb03"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a4eda351919e955f7dfd8a3699750bb03">ON_ContentHash</a> ()=default</td></tr>
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<tr class="separator:a4eda351919e955f7dfd8a3699750bb03"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a36ceb39cd5b7969edc91cfc748c73791"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a36ceb39cd5b7969edc91cfc748c73791">ON_ContentHash</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &)=default</td></tr>
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<tr class="separator:a36ceb39cd5b7969edc91cfc748c73791"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0cac60bf6da07ee8f72cba9d729e3b9f"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a0cac60bf6da07ee8f72cba9d729e3b9f">~ON_ContentHash</a> ()=default</td></tr>
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<tr class="separator:a0cac60bf6da07ee8f72cba9d729e3b9f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3d5536333ff8bbebf6b341355cca1172"><td class="memItemLeft" align="right" valign="top">ON__UINT64 </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount</a> () const</td></tr>
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<tr class="separator:a3d5536333ff8bbebf6b341355cca1172"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af0a7f308fe41d1ffbc67f3ccc644ab29"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29">Compare</a> (const wchar_t *file_path, bool bFastTest) const</td></tr>
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<tr class="separator:af0a7f308fe41d1ffbc67f3ccc644ab29"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6fdda90f92f7cd5e935091cb4a403df0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a6fdda90f92f7cd5e935091cb4a403df0">Compare</a> (<a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> file_content_hash) const</td></tr>
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<tr class="separator:a6fdda90f92f7cd5e935091cb4a403df0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad6dcfec1c56e53f3576a628997483003"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad6dcfec1c56e53f3576a628997483003">ContentHash</a> () const</td></tr>
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<tr class="separator:ad6dcfec1c56e53f3576a628997483003"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a999cdca34407c6727c8a4ad7cc9196ca"><td class="memItemLeft" align="right" valign="top">ON__UINT64 </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a999cdca34407c6727c8a4ad7cc9196ca">ContentLastModifiedTime</a> () const</td></tr>
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<tr class="separator:a999cdca34407c6727c8a4ad7cc9196ca"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6c9f4a8d99838ea4415042a0eab78dd2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a6c9f4a8d99838ea4415042a0eab78dd2">Dump</a> (class <a class="el" href="../../d2/da3/class_o_n___text_log.html">ON_TextLog</a> &text_log) const</td></tr>
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<tr class="separator:a6c9f4a8d99838ea4415042a0eab78dd2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae7564b2790c10576e51ede8bcd412287"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ae7564b2790c10576e51ede8bcd412287">EqualFileNameSizeAndTime</a> (const wchar_t *filename) const</td></tr>
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<tr class="separator:ae7564b2790c10576e51ede8bcd412287"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab9432a268551b74ccfcf6809590ef756"><td class="memItemLeft" align="right" valign="top">ON__UINT64 </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ab9432a268551b74ccfcf6809590ef756">HashCalculationTime</a> () const</td></tr>
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<tr class="separator:ab9432a268551b74ccfcf6809590ef756"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac810581378d560ecd1122d4f08f75627"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ac810581378d560ecd1122d4f08f75627">IsNotSet</a> () const</td></tr>
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<tr class="separator:ac810581378d560ecd1122d4f08f75627"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8ba2d45e64ea148145997d3e002c8cd8"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a8ba2d45e64ea148145997d3e002c8cd8">IsSameBufferContent</a> (const void *buffer, size_t byte_count) const</td></tr>
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<tr class="separator:a8ba2d45e64ea148145997d3e002c8cd8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af6e3086aca27c2cd0253a810891c29f4"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af6e3086aca27c2cd0253a810891c29f4">IsSameFileContent</a> (FILE *fp) const</td></tr>
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<tr class="separator:af6e3086aca27c2cd0253a810891c29f4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad5ca405dc369311f5bffd22d7862e455"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad5ca405dc369311f5bffd22d7862e455">IsSameFileContent</a> (const wchar_t *filename) const</td></tr>
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<tr class="separator:ad5ca405dc369311f5bffd22d7862e455"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a52e7f03e75d056b67069c012e08010d8"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a52e7f03e75d056b67069c012e08010d8">IsSameFileContent</a> (const char *filename) const</td></tr>
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<tr class="separator:a52e7f03e75d056b67069c012e08010d8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a439d720a7f338e9209e3baea2e45c5a1"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a439d720a7f338e9209e3baea2e45c5a1">IsSet</a> () const</td></tr>
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<tr class="separator:a439d720a7f338e9209e3baea2e45c5a1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5366df28bef7eb59b473adba60a0918e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5366df28bef7eb59b473adba60a0918e">NameHash</a> () const</td></tr>
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<tr class="separator:a5366df28bef7eb59b473adba60a0918e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8d3dc7bbb26283d252d221b77773dba9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a8d3dc7bbb26283d252d221b77773dba9">operator=</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &)=default</td></tr>
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<tr class="separator:a8d3dc7bbb26283d252d221b77773dba9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad3129e28b29b296a62b38484f960d4b7"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad3129e28b29b296a62b38484f960d4b7">Read</a> (class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &archive)</td></tr>
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<tr class="memitem:a4c2840fc2b86e10e2f7cfdf1aa9f3505"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a4c2840fc2b86e10e2f7cfdf1aa9f3505">Write</a> (class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &archive) const</td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
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Static Public Member Functions</h2></td></tr>
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<tr class="memitem:a480080e26dcb714010b5530dc46893c9"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a480080e26dcb714010b5530dc46893c9">Compare</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &b)</td></tr>
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<tr class="memitem:af605df4c83d4a65433799cee60af2e8a"><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af605df4c83d4a65433799cee60af2e8a">CompareContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &b)</td></tr>
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<tr class="memitem:afd47df95f4fb24a81e6ac811e77defba"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#afd47df95f4fb24a81e6ac811e77defba">CompareResultFromUnsigned</a> (unsigned int compare_result_as_unsigned)</td></tr>
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<tr class="memitem:a3e5a9cfe8a318b1ff4e971cd0477726e"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a3e5a9cfe8a318b1ff4e971cd0477726e">Create</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_name_hash, ON__UINT64 byte_count, <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_content_hash, ON__UINT64 hash_time, ON__UINT64 content_last_modified_time)</td></tr>
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<tr class="memitem:aa9141290fec1fa9b07ff16f281443932"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aa9141290fec1fa9b07ff16f281443932">CreateFromBuffer</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_name_hash, const void *buffer, size_t byte_count)</td></tr>
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<tr class="memitem:a2202fe28fa7d9e14cc93be710019f72f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a2202fe28fa7d9e14cc93be710019f72f">CreateFromFile</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_file_name_hash, FILE *fp)</td></tr>
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<tr class="memitem:ad417b2a7f72f85f678d6bb5ef5644997"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad417b2a7f72f85f678d6bb5ef5644997">CreateFromFile</a> (const wchar_t *filename)</td></tr>
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<tr class="memitem:aba712f1993d5b41b03ffd2f15ea62f03"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aba712f1993d5b41b03ffd2f15ea62f03">CreateFromFile</a> (const char *filename)</td></tr>
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<tr class="memitem:a141c0fe606c239c1c024914d6dab896e"><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a141c0fe606c239c1c024914d6dab896e">DifferentContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &b)</td></tr>
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<tr class="memitem:aa495c50d35d777aeb70226bac13e5401"><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aa495c50d35d777aeb70226bac13e5401">EqualContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &b)</td></tr>
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<tr class="memitem:ab9616094ebaee5e3d8e0b68aa8e459be"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ab9616094ebaee5e3d8e0b68aa8e459be">Unset</a></td></tr>
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<p><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29">ON_ContentHash::Compare</a> are the possible results of calling ON_ContentHash::CompareFile(). </p>
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<p>Returns: Number of bytes in the content (typically a file or buffer). </p>
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<td class="memname"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> ON_ContentHash::Compare </td>
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<p>Description: Compare the information used to set this content hash with the contents of the file. Parameters: file_path - [in] bFastCompare - [in] If bFastCompare is true and the file_path, create time, last modified time, and size exactly match the values in <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>, then <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9" title="File exists and its size and content matches the information used to set the content hash...">ON_ContentHash::CompareResult::EqualContent</a> is returned without performing the expensive SHA1 test on the file's content. If bFastCompare is false, the SHA-1 hash of the file's content will be calculated and compared before <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9" title="File exists and its size and content matches the information used to set the content hash...">ON_ContentHash::CompareResult::EqualContent</a> is returned. Returns: Result of compare test as a <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d" title="ON_ContentHash::Compare are the possible results of calling ON_ContentHash::CompareFile(). ">ON_ContentHash::CompareResult</a> enum. <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09" title="File exists and its size or content differs from the information used to set the content hash...">ON_ContentHash::CompareResult::DifferentContentFileIsOlder</a> means file_path content is different and older than "this". ON_ContentHash::CompareResult::DifferentContentFileIsNewer means file_path content is different and newer than "this". </p>
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<p>Description: Compare the byte count and SHA-1 content hash. Parameters: file_content_hash - [in] <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> to compare against this one. Returns: Result of compare test as a <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d" title="ON_ContentHash::Compare are the possible results of calling ON_ContentHash::CompareFile(). ">ON_ContentHash::CompareResult</a> enum. <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09" title="File exists and its size or content differs from the information used to set the content hash...">ON_ContentHash::CompareResult::DifferentContentFileIsOlder</a> means file_content_hash is different and older than "this". ON_ContentHash::CompareResult::DifferentContentFileIsNewer means file_content_hash is different and newer than "this". </p>
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<p>Description: Compares all fields </p>
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<p>Description: Compares content byte count and content SHA-1 </p>
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<h2 class="memtitle"><span class="permalink"><a href="#afd47df95f4fb24a81e6ac811e77defba">◆ </a></span>CompareResultFromUnsigned()</h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> ON_ContentHash::CompareResultFromUnsigned </td>
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<h2 class="memtitle"><span class="permalink"><a href="#ad6dcfec1c56e53f3576a628997483003">◆ </a></span>ContentHash()</h2>
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<td class="memname"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> ON_ContentHash::ContentHash </td>
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<p>Returns: SHA-1 hash of the content (typically a buffer or file). </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a999cdca34407c6727c8a4ad7cc9196ca">◆ </a></span>ContentLastModifiedTime()</h2>
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<td class="memname">ON__UINT64 ON_ContentHash::ContentLastModifiedTime </td>
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<p>Returns: Time the hashed content was last modifed in seconds since January 1, 1970 UCT. 0 is returned if this time is not known.</p>
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<p>This time should be used for important decisions as a last resort.</p>
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<p>When hash values differ, this time may be considered to which content is newer (or most recently copied). <br />
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Unfortunately, in many cases this time is often unknown and incorrectly set. For example, some file systems set the last modified time of a copy of an "old" file to the time the copy was created. Thus a copy of "old" content may appear to be newer than "new" content that has not been copied. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3e5a9cfe8a318b1ff4e971cd0477726e">◆ </a></span>Create()</h2>
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<p>Descripton: Create an <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> class with the specified size, hash and times. Parameters: sha1_name_hash - [in] The SHA-1 hash of the name (typically a full path file name). When the content is identified by a file name in a file system, use <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a9cb83e4e627ac917404722990efa2f0c">ON_SHA1_Hash::FileSystemPathHash()</a> to calculate this value. byte_count - [in] number of bytes in the content. sha1_content_hash - [in] The SHA-1 hash of the content (typically a buffer or file). You may use ON_SHA1_Has::FileContentHash() or <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#aed137337f874a15956aaa4f2d0ebe912">ON_SHA1_Hash::BufferContentHash()</a> to calculate this value. hash_time - [in] The time the sha1_hash was calculated in seconds since January 1, 1970 UCT. If 0 is passed in, the current time is used. content_last_modified_time - [in] Pass 0 if not known. The time the hashed information that was last modifed in seconds since January 1, 1970 UCT. If content_last_modified_time > hash_time, then 0 is used. Returns: An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the parameters, </p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa9141290fec1fa9b07ff16f281443932">◆ </a></span>CreateFromBuffer()</h2>
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<p>Descripton: Create an <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> from a memory buffer. Parameters: sha1_name_hash - [in] A SHA-1 hash of the name associated with this content. If the buffer has no name, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a50683fde45600ba340667429fd8fd686" title="all digest bytes are zero ">ON_SHA1_Hash::ZeroDigest</a>. If the buffer has an empty name, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a5fbd8257f1b9c3fdfc929d3869113924" title="SHA-1 hash of zero bytes. ">ON_SHA1_Hash::EmptyContentHash</a>. buffer - [in] <br />
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<h2 class="memtitle"><span class="permalink"><a href="#a2202fe28fa7d9e14cc93be710019f72f">◆ </a></span>CreateFromFile() <span class="overload">[1/3]</span></h2>
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<p>Descripton: Create an <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> from a file stream. Parameters: sha1_file_name_hash - [in] A SHA-1 hash of the file name associated with fp. Use ON_SHA1_Has::FileSystemPathHash() to create the value. If the name is not known, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a50683fde45600ba340667429fd8fd686" title="all digest bytes are zero ">ON_SHA1_Hash::ZeroDigest</a>. fp - [in] pointer to a file opened with ON:FileOpen(...,"rb") Returns: An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the file, hash time = now, and content last modifed time set from the file system information returned by <a class="el" href="../../dd/da7/class_o_n___file_stream.html#ac344f0e78881d31fe07aa99f63955700">ON_FileStream::GetFileInformation()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad417b2a7f72f85f678d6bb5ef5644997">◆ </a></span>CreateFromFile() <span class="overload">[2/3]</span></h2>
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<p>Descripton: Create an <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> from a file stream. Parameters: filename - [in] name of file. Returns: An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the file, hash time = now, and content last modifed time set from the file system information returned by <a class="el" href="../../dd/da7/class_o_n___file_stream.html#ac344f0e78881d31fe07aa99f63955700">ON_FileStream::GetFileInformation()</a>. </p>
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<p>Returns: true if a and b have differnt <a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount()</a> or SHA-1 content hash values. </p>
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<p>Returns: true if a and b have identical <a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount()</a> and SHA-1 content hash values. </p>
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<td class="memname">bool ON_ContentHash::EqualFileNameSizeAndTime </td>
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<td>(</td>
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<td class="paramtype">const wchar_t * </td>
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<td class="paramname"><em>filename</em></td><td>)</td>
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<p>Parameters: filename - [in] Returns: True if the file exists, has size > 0, has the same name, same size, and same last modified time than this content hash. False otherwise. Remarks: Faster than the <a class="el" href="../../db/d13/class_o_n___content_hash.html#aa495c50d35d777aeb70226bac13e5401">ON_ContentHash::EqualContent()</a> and reliable if this content hash was set on the same file system. Unreliable if the file system does not correctly set last modified times or the file was modified less than 2 seconds before the call. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9432a268551b74ccfcf6809590ef756">◆ </a></span>HashCalculationTime()</h2>
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<td class="memname">ON__UINT64 ON_ContentHash::HashCalculationTime </td>
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<td>(</td>
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<p>Returns: Time the hash SHA-1 hash was cacluated in seconds since January 1, 1970 UCT. </p>
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<a id="ac810581378d560ecd1122d4f08f75627"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ac810581378d560ecd1122d4f08f75627">◆ </a></span>IsNotSet()</h2>
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<td class="memname">bool ON_ContentHash::IsNotSet </td>
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<p>Returns: True if the SHA-1 hash is not set. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8ba2d45e64ea148145997d3e002c8cd8">◆ </a></span>IsSameBufferContent()</h2>
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<td class="memname">bool ON_ContentHash::IsSameBufferContent </td>
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<td class="paramtype">size_t </td>
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<p>Description: Test a buffer to see if it has a matching size and SHA-1 hash. Parameters: buffer - [in] <br />
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byte_count - [in] number of bytes in buffer[] Returns: True if the buffer has a matching byte_count and SHA-1 hash. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#af6e3086aca27c2cd0253a810891c29f4">◆ </a></span>IsSameFileContent() <span class="overload">[1/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
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<td>(</td>
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<p>Description: Test a file to see if it has a matching size and SHA-1 hash. Paramters: fp - [in] pointer to file opened with ON::OpenFile(...,"rb") bSkipTimeCheck - [in] if true, the time of last modification is not checked. Returns: True if the file existes, can be read, and has a matching byte_count and SHA-1 hash. </p>
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<a id="ad5ca405dc369311f5bffd22d7862e455"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad5ca405dc369311f5bffd22d7862e455">◆ </a></span>IsSameFileContent() <span class="overload">[2/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
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<p>Description: Test a file to see if it has a matching size and SHA-1 content hash. Paramters: filename - [in] Returns: True if the file exists, can be read, and has a matching byte_count and SHA-1 content hash. </p>
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<a id="a52e7f03e75d056b67069c012e08010d8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a52e7f03e75d056b67069c012e08010d8">◆ </a></span>IsSameFileContent() <span class="overload">[3/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
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<td class="paramtype">const char * </td>
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<a id="a439d720a7f338e9209e3baea2e45c5a1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a439d720a7f338e9209e3baea2e45c5a1">◆ </a></span>IsSet()</h2>
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<td class="memname">bool ON_ContentHash::IsSet </td>
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<p>Returns: True if the SHA-1 hash has been set. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a5366df28bef7eb59b473adba60a0918e">◆ </a></span>NameHash()</h2>
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<td class="memname"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> ON_ContentHash::NameHash </td>
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<p>Returns: SHA-1 hash of the name (typically a full path file name). </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8d3dc7bbb26283d252d221b77773dba9">◆ </a></span>operator=()</h2>
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<td class="memname"><a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>& ON_ContentHash::operator= </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> & </td>
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<h2 class="memtitle"><span class="permalink"><a href="#ad3129e28b29b296a62b38484f960d4b7">◆ </a></span>Read()</h2>
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<td class="memname">bool ON_ContentHash::Read </td>
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<td class="paramtype">class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> & </td>
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<td class="paramname"><em>archive</em></td><td>)</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a4c2840fc2b86e10e2f7cfdf1aa9f3505">◆ </a></span>Write()</h2>
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<td class="memname">bool ON_ContentHash::Write </td>
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<td class="paramtype">class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> & </td>
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<td class="paramname"><em>archive</em></td><td>)</td>
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<h2 class="groupheader">Member Data Documentation</h2>
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<a id="ab9616094ebaee5e3d8e0b68aa8e459be"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9616094ebaee5e3d8e0b68aa8e459be">◆ </a></span>Unset</h2>
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<td class="memname">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::Unset</td>
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