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Class: Sass::Util::SubsetMap
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<span class="title">SubsetMap</span>
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<div class="noframes"><span class="title">(</span><a href="." target="_top">no frames</a><span class="title">)</span></div>
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<div id="content"><h1>Class: Sass::Util::SubsetMap
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</h1>
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<dl class="box">
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<dt class="r1">Inherits:</dt>
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<dd class="r1">
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<span class="inheritName">Object</span>
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<ul class="fullTree">
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<li>Object</li>
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<li class="next">Sass::Util::SubsetMap</li>
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</ul>
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<a href="#" class="inheritanceTree">show all</a>
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</dd>
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<dt class="r2 last">Defined in:</dt>
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<dd class="r2 last">.ruby-sass/lib/sass/util/subset_map.rb</dd>
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</dl>
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<div class="clear"></div>
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<h2>Overview</h2><div class="docstring">
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<div class="discussion">
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<p>A map from sets to values. A value is <span class='object_link'><a href="#[]=-instance_method" title="Sass::Util::SubsetMap#[]= (method)">set</a></span> by providing a set (the
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“set-set”) and a value, which is then recorded as corresponding to that
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set. Values are <span class='object_link'><a href="#[]-instance_method" title="Sass::Util::SubsetMap#[] (method)">accessed</a></span> by providing a set (the “get-set”) and
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returning all values that correspond to set-sets that are subsets of the
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get-set.</p>
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<p>SubsetMap preserves the order of values as they're inserted.</p>
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</div>
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</div>
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<div class="tags">
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<div class="examples">
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<p class="tag_title">Examples:</p>
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<pre class="example code"><code><span class='id identifier rubyid_ssm'>ssm</span> <span class='op'>=</span> <span class='const'>SubsetMap</span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="#initialize-instance_method" title="Sass::Util::SubsetMap#initialize (method)">new</a></span></span>
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<span class='id identifier rubyid_ssm'>ssm</span><span class='lbracket'>[</span><span class='const'>Set</span><span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>2</span><span class='rbracket'>]</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>Foo</span><span class='tstring_end'>"</span></span>
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<span class='id identifier rubyid_ssm'>ssm</span><span class='lbracket'>[</span><span class='const'>Set</span><span class='lbracket'>[</span><span class='int'>2</span><span class='comma'>,</span> <span class='int'>3</span><span class='rbracket'>]</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>Bar</span><span class='tstring_end'>"</span></span>
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<span class='id identifier rubyid_ssm'>ssm</span><span class='lbracket'>[</span><span class='const'>Set</span><span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>2</span><span class='comma'>,</span> <span class='int'>3</span><span class='rbracket'>]</span><span class='rbracket'>]</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>Baz</span><span class='tstring_end'>"</span></span>
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<span class='id identifier rubyid_ssm'>ssm</span><span class='lbracket'>[</span><span class='const'>Set</span><span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>2</span><span class='comma'>,</span> <span class='int'>3</span><span class='rbracket'>]</span><span class='rbracket'>]</span> <span class='comment'>#=> ["Foo", "Bar", "Baz"]</span></code></pre>
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</div>
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<h2>
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Instance Method Summary
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<small>(<a href="#" class="summary_toggle">collapse</a>)</small>
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</h2>
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<ul class="summary">
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<li class="public ">
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<span class="summary_signature">
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<a href="#[]-instance_method" title="#[] (instance method)">#<strong>[]</strong>(set) ⇒ Array </a>
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</span>
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<span class="summary_desc"><div class='inline'>
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<p>Same as <span class='object_link'><a href="#get-instance_method" title="Sass::Util::SubsetMap#get (method)">#get</a></span>, but doesn't return the subsets of the argument for
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which values were found.</p>
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</div></span>
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</li>
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<li class="public ">
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<span class="summary_signature">
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<a href="#[]=-instance_method" title="#[]= (instance method)">#<strong>[]=</strong>(set, value) ⇒ Object </a>
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</span>
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<span class="summary_desc"><div class='inline'>
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<p>Associates a value with a set.</p>
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</div></span>
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</li>
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<li class="public ">
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<span class="summary_signature">
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<a href="#each_value-instance_method" title="#each_value (instance method)">#<strong>each_value</strong> {|Object| ... } ⇒ Object </a>
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</span>
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<span class="summary_desc"><div class='inline'>
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<p>Iterates over each value in the subset map.</p>
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</div></span>
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</li>
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<li class="public ">
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<span class="summary_signature">
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<a href="#empty%3F-instance_method" title="#empty? (instance method)">#<strong>empty?</strong> ⇒ Boolean </a>
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</span>
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<span class="summary_desc"><div class='inline'>
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<p>Whether or not this SubsetMap has any key-value pairs.</p>
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</div></span>
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</li>
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<li class="public ">
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<span class="summary_signature">
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<a href="#get-instance_method" title="#get (instance method)">#<strong>get</strong>(set) ⇒ Array<(Object, #to_set)> </a>
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</span>
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<span class="summary_desc"><div class='inline'>
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<p>Returns all values associated with subsets of `set`.</p>
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</div></span>
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</li>
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<li class="public ">
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<span class="summary_signature">
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<a href="#initialize-instance_method" title="#initialize (instance method)">#<strong>initialize</strong> ⇒ SubsetMap </a>
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</span>
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<span class="note title constructor">constructor</span>
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<span class="summary_desc"><div class='inline'>
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<p>Creates a new, empty SubsetMap.</p>
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</div></span>
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</li>
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</ul>
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<div id="constructor_details" class="method_details_list">
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<h2>Constructor Details</h2>
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<div class="method_details first">
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<h3 class="signature first" id="initialize-instance_method">
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#<strong>initialize</strong> ⇒ <tt><span class='object_link'><a href="" title="Sass::Util::SubsetMap (class)">SubsetMap</a></span></tt>
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</h3><div class="docstring">
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<div class="discussion">
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<p>Creates a new, empty SubsetMap.</p>
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</div>
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</div>
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<div class="tags">
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</div><table class="source_code">
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<tr>
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<td>
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<pre class="lines">
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23
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26</pre>
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</td>
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<td>
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<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 23</span>
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<span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span>
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<span class='ivar'>@hash</span> <span class='op'>=</span> <span class='lbrace'>{</span><span class='rbrace'>}</span>
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<span class='ivar'>@vals</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='rbracket'>]</span>
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<span class='kw'>end</span></pre>
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</td>
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</tr>
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</table>
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</div>
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</div>
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<div id="constructor_details" class="method_details_list">
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<h2>Constructor Details</h2>
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<div class="method_details first">
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<h3 class="signature first" id="initialize-instance_method">
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#<strong>initialize</strong> ⇒ <tt><span class='object_link'><a href="" title="Sass::Util::SubsetMap (class)">SubsetMap</a></span></tt>
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</h3><div class="docstring">
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<div class="discussion">
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<p>Creates a new, empty SubsetMap.</p>
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</div>
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</div>
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<div class="tags">
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</div><table class="source_code">
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<tr>
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<td>
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<pre class="lines">
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23
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26</pre>
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</td>
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<td>
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<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 23</span>
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<span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span>
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<span class='ivar'>@hash</span> <span class='op'>=</span> <span class='lbrace'>{</span><span class='rbrace'>}</span>
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<span class='ivar'>@vals</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='rbracket'>]</span>
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<span class='kw'>end</span></pre>
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</td>
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</tr>
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</table>
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</div>
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</div>
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<div id="instance_method_details" class="method_details_list">
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<h2>Instance Method Details</h2>
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<div class="method_details first">
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<h3 class="signature first" id="[]-instance_method">
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#<strong>[]</strong>(set) ⇒ <tt>Array</tt>
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</h3><div class="docstring">
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<div class="discussion">
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<p>Same as <span class='object_link'><a href="#get-instance_method" title="Sass::Util::SubsetMap#get (method)">#get</a></span>, but doesn't return the subsets of the argument for
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which values were found.</p>
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</div>
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</div>
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<div class="tags">
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<p class="tag_title">Parameters:</p>
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<ul class="param">
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<li>
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<span class='name'>set</span>
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<span class='type'>(<tt>Set</tt>)</span>
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—
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<div class='inline'>
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<p>The set to use as the map key.</p>
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</div>
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</li>
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</ul>
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<p class="tag_title">Returns:</p>
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<ul class="return">
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<li>
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<span class='type'>(<tt>Array</tt>)</span>
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—
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<div class='inline'>
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<p>The array of all values associated with subsets of `set`, in insertion
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order.</p>
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</div>
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</li>
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</ul>
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<p class="tag_title">See Also:</p>
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<ul class="see">
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<li><span class='object_link'><a href="#get-instance_method" title="Sass::Util::SubsetMap#get (method)">#get</a></span></li>
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</ul>
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</div><table class="source_code">
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<tr>
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<td>
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<pre class="lines">
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96
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98</pre>
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</td>
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<td>
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<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 96</span>
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<span class='kw'>def</span> <span class='op'>[]</span><span class='lparen'>(</span><span class='id identifier rubyid_set'>set</span><span class='rparen'>)</span>
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<span class='id identifier rubyid_get'>get</span><span class='lparen'>(</span><span class='id identifier rubyid_set'>set</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_map'>map</span> <span class='lbrace'>{</span><span class='op'>|</span><span class='id identifier rubyid_v'>v</span><span class='comma'>,</span> <span class='id identifier rubyid__'>_</span><span class='op'>|</span> <span class='id identifier rubyid_v'>v</span><span class='rbrace'>}</span>
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<span class='kw'>end</span></pre>
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</td>
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</tr>
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</table>
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</div>
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<div class="method_details ">
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<h3 class="signature " id="[]=-instance_method">
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#<strong>[]=</strong>(set, value) ⇒ <tt>Object</tt>
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</h3><div class="docstring">
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<div class="discussion">
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<p>Associates a value with a set. When `set` or any of its supersets is
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accessed, `value` will be among the values returned.</p>
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<p>Note that if the same `set` is passed to this method multiple times, all
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given `value`s will be associated with that `set`.</p>
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<p>This runs in `O(n)` time, where `n` is the size of `set`.</p>
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</div>
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</div>
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<div class="tags">
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<p class="tag_title">Parameters:</p>
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<ul class="param">
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<li>
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<span class='name'>set</span>
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<span class='type'>(<tt>#to_set</tt>)</span>
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—
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<div class='inline'>
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<p>The set to use as the map key. May not be empty.</p>
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</div>
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</li>
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<li>
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<span class='name'>value</span>
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<span class='type'>(<tt>Object</tt>)</span>
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—
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<div class='inline'>
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<p>The value to associate with `set`.</p>
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</div>
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</li>
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</ul>
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<p class="tag_title">Raises:</p>
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<ul class="raise">
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<li>
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<span class='type'>(<tt>ArgumentError</tt>)</span>
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—
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<div class='inline'>
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<p>If `set` is empty.</p>
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</div>
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</li>
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</ul>
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</div><table class="source_code">
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<tr>
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<td>
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<pre class="lines">
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47
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48
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49
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51
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52
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53
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54
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55
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56</pre>
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</td>
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<td>
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<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 47</span>
|
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|
<span class='kw'>def</span> <span class='op'>[]=</span><span class='lparen'>(</span><span class='id identifier rubyid_set'>set</span><span class='comma'>,</span> <span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span>
|
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<span class='id identifier rubyid_raise'>raise</span> <span class='const'>ArgumentError</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>SubsetMap keys may not be empty.</span><span class='tstring_end'>"</span></span><span class='rparen'>)</span> <span class='kw'>if</span> <span class='id identifier rubyid_set'>set</span><span class='period'>.</span><span class='id identifier rubyid_empty?'>empty?</span>
|
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<span class='id identifier rubyid_index'>index</span> <span class='op'>=</span> <span class='ivar'>@vals</span><span class='period'>.</span><span class='id identifier rubyid_size'>size</span>
|
|
<span class='ivar'>@vals</span> <span class='op'><<</span> <span class='id identifier rubyid_value'>value</span>
|
|
<span class='id identifier rubyid_set'>set</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_k'>k</span><span class='op'>|</span>
|
|
<span class='ivar'>@hash</span><span class='lbracket'>[</span><span class='id identifier rubyid_k'>k</span><span class='rbracket'>]</span> <span class='op'>||=</span> <span class='lbracket'>[</span><span class='rbracket'>]</span>
|
|
<span class='ivar'>@hash</span><span class='lbracket'>[</span><span class='id identifier rubyid_k'>k</span><span class='rbracket'>]</span> <span class='op'><<</span> <span class='lbracket'>[</span><span class='id identifier rubyid_set'>set</span><span class='comma'>,</span> <span class='id identifier rubyid_set'>set</span><span class='period'>.</span><span class='id identifier rubyid_to_set'>to_set</span><span class='comma'>,</span> <span class='id identifier rubyid_index'>index</span><span class='rbracket'>]</span>
|
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<span class='kw'>end</span>
|
|
<span class='kw'>end</span></pre>
|
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</td>
|
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</tr>
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</table>
|
|
</div>
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|
|
<div class="method_details ">
|
|
<h3 class="signature " id="each_value-instance_method">
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|
|
#<strong>each_value</strong> {|Object| ... } ⇒ <tt>Object</tt>
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|
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</h3><div class="docstring">
|
|
<div class="discussion">
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|
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<p>Iterates over each value in the subset map. Ignores keys completely. If
|
|
multiple keys have the same value, this will return them multiple times.</p>
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|
|
</div>
|
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</div>
|
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<div class="tags">
|
|
|
|
<p class="tag_title">Yields:</p>
|
|
<ul class="yield">
|
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|
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<li>
|
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|
|
|
|
<span class='type'>(<tt>Object</tt>)</span>
|
|
|
|
|
|
|
|
—
|
|
<div class='inline'>
|
|
<p>Each value in the map.</p>
|
|
</div>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</div><table class="source_code">
|
|
<tr>
|
|
<td>
|
|
<pre class="lines">
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|
104
|
|
105
|
|
106</pre>
|
|
</td>
|
|
<td>
|
|
<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 104</span>
|
|
|
|
<span class='kw'>def</span> <span class='id identifier rubyid_each_value'>each_value</span>
|
|
<span class='ivar'>@vals</span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='lbrace'>{</span><span class='op'>|</span><span class='id identifier rubyid_v'>v</span><span class='op'>|</span> <span class='kw'>yield</span> <span class='id identifier rubyid_v'>v</span><span class='rbrace'>}</span>
|
|
<span class='kw'>end</span></pre>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
|
|
<div class="method_details ">
|
|
<h3 class="signature " id="empty?-instance_method">
|
|
|
|
#<strong>empty?</strong> ⇒ <tt>Boolean</tt>
|
|
|
|
|
|
|
|
|
|
|
|
</h3><div class="docstring">
|
|
<div class="discussion">
|
|
|
|
<p>Whether or not this SubsetMap has any key-value pairs.</p>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<div class="tags">
|
|
|
|
<p class="tag_title">Returns:</p>
|
|
<ul class="return">
|
|
|
|
<li>
|
|
|
|
|
|
<span class='type'>(<tt>Boolean</tt>)</span>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</div><table class="source_code">
|
|
<tr>
|
|
<td>
|
|
<pre class="lines">
|
|
|
|
|
|
31
|
|
32
|
|
33</pre>
|
|
</td>
|
|
<td>
|
|
<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 31</span>
|
|
|
|
<span class='kw'>def</span> <span class='id identifier rubyid_empty?'>empty?</span>
|
|
<span class='ivar'>@hash</span><span class='period'>.</span><span class='id identifier rubyid_empty?'>empty?</span>
|
|
<span class='kw'>end</span></pre>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
|
|
<div class="method_details ">
|
|
<h3 class="signature " id="get-instance_method">
|
|
|
|
#<strong>get</strong>(set) ⇒ <tt>Array<(Object, #to_set)></tt>
|
|
|
|
|
|
|
|
|
|
|
|
</h3><div class="docstring">
|
|
<div class="discussion">
|
|
|
|
<p>Returns all values associated with subsets of `set`.</p>
|
|
|
|
<p>In the worst case, this runs in `O(m*max(n, log m))` time, where `n` is the
|
|
size of `set` and `m` is the number of associations in the map. However,
|
|
unless many keys in the map overlap with `set`, `m` will typically be much
|
|
smaller.</p>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<div class="tags">
|
|
<p class="tag_title">Parameters:</p>
|
|
<ul class="param">
|
|
|
|
<li>
|
|
|
|
<span class='name'>set</span>
|
|
|
|
|
|
<span class='type'>(<tt>Set</tt>)</span>
|
|
|
|
|
|
|
|
—
|
|
<div class='inline'>
|
|
<p>The set to use as the map key.</p>
|
|
</div>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
<p class="tag_title">Returns:</p>
|
|
<ul class="return">
|
|
|
|
<li>
|
|
|
|
|
|
<span class='type'>(<tt>Array<(Object, #to_set)></tt>)</span>
|
|
|
|
|
|
|
|
—
|
|
<div class='inline'>
|
|
<p>An array of pairs, where the first value is the value associated with a
|
|
subset of `set`, and the second value is that subset of `set` (or whatever
|
|
`#to_set` object was used to set the value) This array is in insertion
|
|
order.</p>
|
|
</div>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
<p class="tag_title">See Also:</p>
|
|
<ul class="see">
|
|
|
|
<li><span class='object_link'><a href="#[]-instance_method" title="Sass::Util::SubsetMap#[] (method)">#[]</a></span></li>
|
|
|
|
</ul>
|
|
|
|
</div><table class="source_code">
|
|
<tr>
|
|
<td>
|
|
<pre class="lines">
|
|
|
|
|
|
73
|
|
74
|
|
75
|
|
76
|
|
77
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|
78
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|
79
|
|
80
|
|
81
|
|
82
|
|
83
|
|
84
|
|
85
|
|
86
|
|
87</pre>
|
|
</td>
|
|
<td>
|
|
<pre class="code"><span class="info file"># File '.ruby-sass/lib/sass/util/subset_map.rb', line 73</span>
|
|
|
|
<span class='kw'>def</span> <span class='id identifier rubyid_get'>get</span><span class='lparen'>(</span><span class='id identifier rubyid_set'>set</span><span class='rparen'>)</span>
|
|
<span class='id identifier rubyid_res'>res</span> <span class='op'>=</span> <span class='id identifier rubyid_set'>set</span><span class='period'>.</span><span class='id identifier rubyid_map'>map</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_k'>k</span><span class='op'>|</span>
|
|
<span class='id identifier rubyid_subsets'>subsets</span> <span class='op'>=</span> <span class='ivar'>@hash</span><span class='lbracket'>[</span><span class='id identifier rubyid_k'>k</span><span class='rbracket'>]</span>
|
|
<span class='kw'>next</span> <span class='kw'>unless</span> <span class='id identifier rubyid_subsets'>subsets</span>
|
|
<span class='id identifier rubyid_subsets'>subsets</span><span class='period'>.</span><span class='id identifier rubyid_map'>map</span> <span class='kw'>do</span> <span class='op'>|</span><span class='id identifier rubyid_subenum'>subenum</span><span class='comma'>,</span> <span class='id identifier rubyid_subset'>subset</span><span class='comma'>,</span> <span class='id identifier rubyid_index'>index</span><span class='op'>|</span>
|
|
<span class='kw'>next</span> <span class='kw'>unless</span> <span class='id identifier rubyid_subset'>subset</span><span class='period'>.</span><span class='id identifier rubyid_subset?'>subset?</span><span class='lparen'>(</span><span class='id identifier rubyid_set'>set</span><span class='rparen'>)</span>
|
|
<span class='lbracket'>[</span><span class='id identifier rubyid_index'>index</span><span class='comma'>,</span> <span class='id identifier rubyid_subenum'>subenum</span><span class='rbracket'>]</span>
|
|
<span class='kw'>end</span>
|
|
<span class='kw'>end</span><span class='period'>.</span><span class='id identifier rubyid_flatten'>flatten</span><span class='lparen'>(</span><span class='int'>1</span><span class='rparen'>)</span>
|
|
<span class='id identifier rubyid_res'>res</span><span class='period'>.</span><span class='id identifier rubyid_compact!'>compact!</span>
|
|
<span class='id identifier rubyid_res'>res</span><span class='period'>.</span><span class='id identifier rubyid_uniq!'>uniq!</span>
|
|
<span class='id identifier rubyid_res'>res</span><span class='period'>.</span><span class='id identifier rubyid_sort!'>sort!</span>
|
|
<span class='id identifier rubyid_res'>res</span><span class='period'>.</span><span class='id identifier rubyid_map!'>map!</span> <span class='lbrace'>{</span><span class='op'>|</span><span class='id identifier rubyid_i'>i</span><span class='comma'>,</span> <span class='id identifier rubyid_s'>s</span><span class='op'>|</span> <span class='lbracket'>[</span><span class='ivar'>@vals</span><span class='lbracket'>[</span><span class='id identifier rubyid_i'>i</span><span class='rbracket'>]</span><span class='comma'>,</span> <span class='id identifier rubyid_s'>s</span><span class='rbracket'>]</span><span class='rbrace'>}</span>
|
|
<span class='id identifier rubyid_res'>res</span>
|
|
<span class='kw'>end</span></pre>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
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|
</div>
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<div id="footer">
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