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382 lines
9.4 KiB
382 lines
9.4 KiB
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<title>hash - The Go Programming Language</title>
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...
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<div class="top-heading" id="heading-wide"><a href="http://localhost:6060/">The Go Programming Language</a></div>
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<div id="page" class="wide">
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<div class="container">
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<h1>Package hash</h1>
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<div id="nav"></div>
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<!--
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Copyright 2009 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file.
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-->
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<!--
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Note: Static (i.e., not template-generated) href and id
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attributes start with "pkg-" to make it impossible for
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them to conflict with generated attributes (some of which
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correspond to Go identifiers).
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<script type='text/javascript'>
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document.ANALYSIS_DATA = null;
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document.CALLGRAPH = null;
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</script>
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<div id="short-nav">
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<dl>
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<dd><code>import "hash"</code></dd>
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</dl>
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<dl>
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<dd><a href="index.html#pkg-overview" class="overviewLink">Overview</a></dd>
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<dd><a href="index.html#pkg-index" class="indexLink">Index</a></dd>
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<dd><a href="index.html#pkg-subdirectories">Subdirectories</a></dd>
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</dl>
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<!-- The package's Name is printed as title by the top-level template -->
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<div id="pkg-overview" class="toggleVisible">
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<h2 class="toggleButton" title="Click to show Overview section">Overview ▹</h2>
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</div>
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<div class="expanded">
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<h2 class="toggleButton" title="Click to hide Overview section">Overview ▾</h2>
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<p>
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Package hash provides interfaces for hash functions.
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</p>
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</div>
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</div>
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<div id="pkg-index" class="toggleVisible">
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<h2 class="toggleButton" title="Click to show Index section">Index ▹</h2>
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<h2 class="toggleButton" title="Click to hide Index section">Index ▾</h2>
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<!-- Table of contents for API; must be named manual-nav to turn off auto nav. -->
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<div id="manual-nav">
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<dl>
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<dd><a href="index.html#Hash">type Hash</a></dd>
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<dd><a href="index.html#Hash32">type Hash32</a></dd>
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<dd><a href="index.html#Hash64">type Hash64</a></dd>
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</dl>
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</div><!-- #manual-nav -->
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<h4>Package files</h4>
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<p>
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<span style="font-size:90%">
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<a href="http://localhost:6060/src/hash/hash.go">hash.go</a>
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</span>
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</p>
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</div><!-- .expanded -->
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</div><!-- #pkg-index -->
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<div id="pkg-callgraph" class="toggle" style="display: none">
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<h2 class="toggleButton" title="Click to show Internal Call Graph section">Internal call graph ▹</h2>
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</div> <!-- .expanded -->
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<div class="expanded">
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<h2 class="toggleButton" title="Click to hide Internal Call Graph section">Internal call graph ▾</h2>
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<p>
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In the call graph viewer below, each node
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is a function belonging to this package
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and its children are the functions it
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calls—perhaps dynamically.
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</p>
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<p>
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The root nodes are the entry points of the
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package: functions that may be called from
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outside the package.
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There may be non-exported or anonymous
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functions among them if they are called
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dynamically from another package.
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</p>
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<p>
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Click a node to visit that function's source code.
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From there you can visit its callers by
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clicking its declaring <code>func</code>
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token.
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</p>
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<p>
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Functions may be omitted if they were
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determined to be unreachable in the
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particular programs or tests that were
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analyzed.
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</p>
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<!-- Zero means show all package entry points. -->
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<ul style="margin-left: 0.5in" id="callgraph-0" class="treeview"></ul>
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</div>
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</div> <!-- #pkg-callgraph -->
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<h2 id="Hash">type <a href="http://localhost:6060/src/hash/hash.go?s=310:959#L1">Hash</a></h2>
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<pre>type Hash interface {
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<span class="comment">// Write (via the embedded io.Writer interface) adds more data to the running hash.</span>
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<span class="comment">// It never returns an error.</span>
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<a href="../io/index.html">io</a>.<a href="../io/index.html#Writer">Writer</a>
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<span class="comment">// Sum appends the current hash to b and returns the resulting slice.</span>
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<span class="comment">// It does not change the underlying hash state.</span>
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Sum(b []<a href="../builtin/index.html#byte">byte</a>) []<a href="../builtin/index.html#byte">byte</a>
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<span class="comment">// Reset resets the Hash to its initial state.</span>
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Reset()
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<span class="comment">// Size returns the number of bytes Sum will return.</span>
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Size() <a href="../builtin/index.html#int">int</a>
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<span class="comment">// BlockSize returns the hash's underlying block size.</span>
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<span class="comment">// The Write method must be able to accept any amount</span>
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<span class="comment">// of data, but it may operate more efficiently if all writes</span>
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<span class="comment">// are a multiple of the block size.</span>
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BlockSize() <a href="../builtin/index.html#int">int</a>
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}</pre>
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<p>
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Hash is the common interface implemented by all hash functions.
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</p>
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<h2 id="Hash32">type <a href="http://localhost:6060/src/hash/hash.go?s=1037:1084#L24">Hash32</a></h2>
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<pre>type Hash32 interface {
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<a href="index.html#Hash">Hash</a>
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Sum32() <a href="../builtin/index.html#uint32">uint32</a>
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}</pre>
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<p>
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Hash32 is the common interface implemented by all 32-bit hash functions.
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</p>
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<h2 id="Hash64">type <a href="http://localhost:6060/src/hash/hash.go?s=1162:1209#L30">Hash64</a></h2>
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<pre>type Hash64 interface {
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<a href="index.html#Hash">Hash</a>
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Sum64() <a href="../builtin/index.html#uint64">uint64</a>
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}</pre>
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<p>
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Hash64 is the common interface implemented by all 64-bit hash functions.
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</p>
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<h2 id="pkg-subdirectories">Subdirectories</h2>
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<div class="pkg-dir">
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<table>
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<tr>
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<th class="pkg-name">Name</th>
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<th class="pkg-synopsis">Synopsis</th>
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</tr>
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<tr>
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<td colspan="2"><a href="http://localhost:6060/pkg/">..</a></td>
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<tr>
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<td class="pkg-name" style="padding-left: 0px;">
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<a href="adler32/index.html">adler32</a>
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</td>
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<td class="pkg-synopsis">
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Package adler32 implements the Adler-32 checksum.
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</td>
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</tr>
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<tr>
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<td class="pkg-name" style="padding-left: 0px;">
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<a href="crc32/index.html">crc32</a>
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</td>
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<td class="pkg-synopsis">
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Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, checksum.
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</td>
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</tr>
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<tr>
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<td class="pkg-name" style="padding-left: 0px;">
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<a href="crc64/index.html">crc64</a>
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</td>
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<td class="pkg-synopsis">
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Package crc64 implements the 64-bit cyclic redundancy check, or CRC-64, checksum.
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</td>
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</tr>
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<tr>
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<td class="pkg-name" style="padding-left: 0px;">
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<a href="fnv/index.html">fnv</a>
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</td>
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<td class="pkg-synopsis">
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Package fnv implements FNV-1 and FNV-1a, non-cryptographic hash functions created by Glenn Fowler, Landon Curt Noll, and Phong Vo.
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</td>
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</tr>
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</table>
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