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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
Class: Hash
— Documentation by YARD 0.9.20
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<a href="_index.html">Index (H)</a> »
<span class="title">Hash</span>
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<div id="content"><h1>Class: Hash
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName">Object</span>
<ul class="fullTree">
<li>Object</li>
<li class="next">Hash</li>
</ul>
<a href="#" class="inheritanceTree">show all</a>
</dd>
</dl>
<dl>
<dt>Includes:</dt>
<dd><span class='object_link'><a href="Enumerable.html" title="Enumerable (module)">Enumerable</a></span></dd>
</dl>
<dl>
<dt>Defined in:</dt>
<dd>mrblib/hash.rb<span class="defines">,<br />
src/hash.c,<br /> mrblib/hash.rb,<br /> mrbgems/mruby-hash-ext/mrblib/hash.rb</span>
</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>Hash is enumerable</p>
<p>ISO 15.2.13.3</p>
</div>
</div>
<div class="tags">
</div>
<h2>Constant Summary</h2>
<h3 class="inherited">Constants included
from <span class='object_link'><a href="Enumerable.html" title="Enumerable (module)">Enumerable</a></span></h3>
<p class="inherited"><span class='object_link'><a href="Enumerable.html#NONE-constant" title="Enumerable::NONE (constant)">Enumerable::NONE</a></span></p>
<h2>
Class Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#[]-class_method" title="[] (class method)">.<strong>[]</strong>(*object) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: Hash[ key, value, … ] -> new_hash Hash[ [ [key, value], … ] ] -> new_hash Hash[ object ] -> new_hash.</p>
</div></span>
</li>
</ul>
<h2>
Instance Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#<-instance_method" title="#< (instance method)">#<strong><</strong>(hash) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hash < other -> true or false.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#<=-instance_method" title="#<= (instance method)">#<strong><=</strong>(hash) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hash <= other -> true or false.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#==-instance_method" title="#== (instance method)">#<strong>==</strong>(hash) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Equality—Two hashes are equal if they each contain the same number of keys and if each key-value pair is equal to (according to <code>Object#==</code>) the corresponding elements in the other hash.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#>-instance_method" title="#> (instance method)">#<strong>></strong>(hash) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hash > other -> true or false.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#>=-instance_method" title="#>= (instance method)">#<strong>>=</strong>(hash) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hash >= other -> true or false.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#[]-instance_method" title="#[] (instance method)">#<strong>[]</strong>(key) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Element Reference—Retrieves the <i>value</i> object corresponding to the <i>key</i> object.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#[]=-instance_method" title="#[]= (instance method)">#<strong>[]=</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Element Assignment—Associates the value given by <i>value</i> with the key given by <i>key</i>.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#__delete-instance_method" title="#__delete (instance method)">#<strong>__delete</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>core of 15.2.13.4.8.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#_inspect-instance_method" title="#_inspect (instance method)">#<strong>_inspect</strong>(recur_list) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>internal method for Hash inspection.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#clear-instance_method" title="#clear (instance method)">#<strong>clear</strong> ⇒ Hash </a>
</span>
<span class="summary_desc"><div class='inline'><p>Removes all key-value pairs from <code>hsh</code>.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#compact-instance_method" title="#compact (instance method)">#<strong>compact</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hsh.compact -> new_hsh.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#compact!-instance_method" title="#compact! (instance method)">#<strong>compact!</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hsh.compact! -> hsh.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#default-instance_method" title="#default (instance method)">#<strong>default</strong>(key = nil) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns the default value, the value that would be returned by <i>hsh</i>[<i>key</i>] if <i>key</i> did not exist in <i>hsh</i>.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#default=-instance_method" title="#default= (instance method)">#<strong>default=</strong>(obj) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Sets the default value, the value returned for a key that does not exist in the hash.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#default_proc-instance_method" title="#default_proc (instance method)">#<strong>default_proc</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>If <code>Hash::new</code> was invoked with a block, return that block, otherwise return <code>nil</code>.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#default_proc=-instance_method" title="#default_proc= (instance method)">#<strong>default_proc=</strong>(proc_obj) ⇒ Proc </a>
</span>
<span class="summary_desc"><div class='inline'><p>Sets the default proc to be executed on each key lookup.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#delete-instance_method" title="#delete (instance method)">#<strong>delete</strong>(key, &block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Delete the element with the key +key+.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#delete_if-instance_method" title="#delete_if (instance method)">#<strong>delete_if</strong>(&block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><table>
<tbody>
<tr>
<td>call-seq: hsh.delete_if {</td>
<td>key, value</td>
<td>block } -> hsh hsh.delete_if -> an_enumerator.</td>
</tr>
</tbody>
</table>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#dig-instance_method" title="#dig (instance method)">#<strong>dig</strong>(idx, *args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hsh.dig(key,…) -> object.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#each-instance_method" title="#each (instance method)">#<strong>each</strong>(&block) ⇒ Object </a>
(also: #each_pair)
</span>
<span class="summary_desc"><div class='inline'><p>Calls the given block for each element of +self+ and pass the key and value of each element.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#each_key-instance_method" title="#each_key (instance method)">#<strong>each_key</strong>(&block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Calls the given block for each element of +self+ and pass the key of each element.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#each_value-instance_method" title="#each_value (instance method)">#<strong>each_value</strong>(&block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Calls the given block for each element of +self+ and pass the value of each element.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#empty%3F-instance_method" title="#empty? (instance method)">#<strong>empty?</strong> ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns <code>true</code> if <i>hsh</i> contains no key-value pairs.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#eql%3F-instance_method" title="#eql? (instance method)">#<strong>eql?</strong>(hash) ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns <code>true</code> if <i>hash</i> and <i>other</i> are both hashes with the same content compared by eql?.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#fetch-instance_method" title="#fetch (instance method)">#<strong>fetch</strong>(key, none = NONE, &block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><table>
<tbody>
<tr>
<td>call-seq: hsh.fetch(key [, default] ) -> obj hsh.fetch(key) {</td>
<td>key</td>
<td>block } -> obj.</td>
</tr>
</tbody>
</table>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#fetch_values-instance_method" title="#fetch_values (instance method)">#<strong>fetch_values</strong>(*keys, &block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><table>
<tbody>
<tr>
<td>call-seq: hsh.fetch_values(key, …) -> array hsh.fetch_values(key, …) {</td>
<td>key</td>
<td>block } -> array.</td>
</tr>
</tbody>
</table>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#flatten-instance_method" title="#flatten (instance method)">#<strong>flatten</strong>(level = 1) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hash.flatten -> an_array hash.flatten(level) -> an_array.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#has_key%3F-instance_method" title="#has_key? (instance method)">#<strong>has_key?</strong> ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'><p>15.2.13.4.13.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#has_value%3F-instance_method" title="#has_value? (instance method)">#<strong>has_value?</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>Returns <code>true</code> if the given value is present for some key in <i>hsh</i>.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#include%3F-instance_method" title="#include? (instance method)">#<strong>include?</strong> ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'><p>15.2.13.4.15.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#initialize-instance_method" title="#initialize (instance method)">#<strong>initialize</strong> ⇒ Object </a>
</span>
<span class="note title constructor">constructor</span>
<span class="summary_desc"><div class='inline'><p>Returns a new, empty hash.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#inspect-instance_method" title="#inspect (instance method)">#<strong>inspect</strong> ⇒ Object </a>
(also: #to_s)
</span>
<span class="summary_desc"><div class='inline'><p>ISO 15.2.13.4.30 (x).</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#invert-instance_method" title="#invert (instance method)">#<strong>invert</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><p>call-seq: hsh.invert -> new_hash.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#keep_if-instance_method" title="#keep_if (instance method)">#<strong>keep_if</strong>(&block) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'><table>
<tbody>
<tr>
<td>call-seq: hsh.keep_if {</td>
<td>key, value</td>
<td>block } -> hsh hsh.keep_if -> an_enumerator.</td>
</tr>
</tbody>
</table>
</div></span>
</li>
<li class="public ">