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<title>class LCS::SequenceCallbacks - diff-lcs-1.5.0 Documentation</title>
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<h3>Methods</h3>
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<li ><a href="#method-c-change">::change</a>
<li ><a href="#method-c-discard_a">::discard_a</a>
<li ><a href="#method-c-discard_b">::discard_b</a>
<li ><a href="#method-c-match">::match</a>
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<h1 id="class-LCS::SequenceCallbacks" class="class">
class LCS::SequenceCallbacks
</h1>
<section class="description">
<p>This callback object implements the default set of callback events, which only returns the event itself. Note that finished_a and finished_b are not implemented – I haven't yet figured out where they would be useful.</p>
<p>Note that this is intended to be called as is, e.g.,</p>
<pre class="ruby"><span class="ruby-constant">Diff</span><span class="ruby-operator">::</span><span class="ruby-constant">LCS</span>.<span class="ruby-constant">LCS</span>(<span class="ruby-identifier">seq1</span>, <span class="ruby-identifier">seq2</span>, <span class="ruby-constant">Diff</span><span class="ruby-operator">::</span><span class="ruby-constant">LCS</span><span class="ruby-operator">::</span><span class="ruby-constant">DefaultCallbacks</span>)
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<h3>Public Class Methods</h3>
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<div id="method-c-change" class="method-detail ">
<div class="method-heading">
<span class="method-name">change</span><span
class="method-args">(event)</span>
<span class="method-click-advice">click to toggle source</span>
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<div class="method-description">
<p>Called when both the old and new values have changed.</p>
<div class="method-source-code" id="change-source">
<pre><span class="ruby-comment"># File lib/diff/lcs/callbacks.rb, line 32</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">change</span>(<span class="ruby-identifier">event</span>)
<span class="ruby-identifier">event</span>
<span class="ruby-keyword">end</span></pre>
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<div id="method-c-discard_a" class="method-detail ">
<div class="method-heading">
<span class="method-name">discard_a</span><span
class="method-args">(event)</span>
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<div class="method-description">
<p>Called when the old value is discarded in favour of the new value.</p>
<div class="method-source-code" id="discard_a-source">
<pre><span class="ruby-comment"># File lib/diff/lcs/callbacks.rb, line 22</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">discard_a</span>(<span class="ruby-identifier">event</span>)
<span class="ruby-identifier">event</span>
<span class="ruby-keyword">end</span></pre>
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<div id="method-c-discard_b" class="method-detail ">
<div class="method-heading">
<span class="method-name">discard_b</span><span
class="method-args">(event)</span>
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<div class="method-description">
<p>Called when the new value is discarded in favour of the old value.</p>
<div class="method-source-code" id="discard_b-source">
<pre><span class="ruby-comment"># File lib/diff/lcs/callbacks.rb, line 27</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">discard_b</span>(<span class="ruby-identifier">event</span>)
<span class="ruby-identifier">event</span>
<span class="ruby-keyword">end</span></pre>
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<div id="method-c-match" class="method-detail ">
<div class="method-heading">
<span class="method-name">match</span><span
class="method-args">(event)</span>
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<div class="method-description">
<p>Called when two items match.</p>
<div class="method-source-code" id="match-source">
<pre><span class="ruby-comment"># File lib/diff/lcs/callbacks.rb, line 17</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">match</span>(<span class="ruby-identifier">event</span>)
<span class="ruby-identifier">event</span>
<span class="ruby-keyword">end</span></pre>
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