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305 lines
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8.1 KiB
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<h1><a id="libraryTitle" href="../index.html">PSDWriter Documentation </a></h1>
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<a id="developerHome" href="../index.html">Foundry376</a>
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<h1 class="hideInXcode">NSMutableData(PSDAdditions) Category Reference</h1>
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<option value="instance_methods">Instance Methods</option>
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<option value="//api/name/appendValue:withLength:"> - appendValue:withLength:</option>
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<h1 class="title title-header">NSMutableData(PSDAdditions) Category Reference</h1>
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<td class="specification-title">Declared in</td>
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<td class="specification-value">NSDataPSDAdditions.h<br />NSDataPSDAdditions.m</td>
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<code><a href="#//api/name/appendValue:withLength:">– appendValue:withLength:</a></code>
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<span class="tooltip"><p>Allows you to append a numeric value to an NSMutableData object and pad it to any length.</p></span>
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<div class="section section-methods">
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<a title="Instance Methods" name="instance_methods"></a>
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<h2 class="subtitle subtitle-methods">Instance Methods</h2>
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<div class="section-method">
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<a name="//api/name/appendValue:withLength:" title="appendValue:withLength:"></a>
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<h3 class="subsubtitle method-title">appendValue:withLength:</h3>
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<div class="method-subsection brief-description">
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<p>Allows you to append a numeric value to an NSMutableData object and pad it to any length.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)appendValue:(long)<em>value</em> withLength:(int)<em>length</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<dl class="argument-def parameter-def">
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<dt><em>length:</em></dt>
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<dd><p>The number of bytes that should be used to store the value. The value will be padded
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to length bytes regardless of the number of bytes required to store it.</p></dd>
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</dl>
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<dl class="argument-def parameter-def">
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<dt><em>value:</em></dt>
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<dd><p>The value to append</p></dd>
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</dl>
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</div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>Allows you to append a numeric value to an NSMutableData object and pad it to any length.</p>
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<p>For example, we could say [data appendValue: 2 withLength: 5], and 00002 would be written
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into the data object. Very useful for writing to file formats that have header structures
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that require a certain number of bytes be used for a certain value. i.e. PSD and TIFF</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">NSDataPSDAdditions.h</code><br />
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</div>
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<p><span class="copyright">© 2012 Foundry376. All rights reserved. (Last updated: 2012-03-08)</span><br />
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