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<a name="containers_002eMap"></a>
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<a name="containers_002eMap-1"></a>
<h3 class="section">6.2 containers.Map</h3>
<a name="index-Map"></a>
<a name="index-key_002fvalue-store"></a>
<a name="index-hash-table"></a>
<a name="XREFcontainers_005fMap"></a><dl>
<dt><a name="index-containers_002eMap"></a><em><var>m</var> =</em> <strong>containers.Map</strong> <em>()</em></dt>
<dt><a name="index-containers_002eMap-1"></a><em><var>m</var> =</em> <strong>containers.Map</strong> <em>(<var>keys</var>, <var>vals</var>)</em></dt>
<dt><a name="index-containers_002eMap-2"></a><em><var>m</var> =</em> <strong>containers.Map</strong> <em>(<var>keys</var>, <var>vals</var>, <code>"UniformValues"</code>, <var>is_uniform</var>)</em></dt>
<dt><a name="index-containers_002eMap-3"></a><em><var>m</var> =</em> <strong>containers.Map</strong> <em>(<code>"KeyType"</code>, <var>kt</var>, <code>"ValueType"</code>, <var>vt</var>)</em></dt>
<dd>
<p>Create an object of the containers.Map class that stores a list of key/value
pairs.
</p>
<p><var>keys</var> is an array of <em>unique</em> keys for the map. The keys can be
numeric scalars or strings. The type for numeric keys may be one of
<code>"double"</code>, <code>"single"</code>, <code>"int32"</code>, <code>"uint32"</code>,
<code>"int64"</code>, or <code>"uint64"</code>. Other numeric or logical keys will
be converted to <code>"double"</code>. A single string key may be entered as is.
Multiple string keys are entered as a cell array of strings.
</p>
<p><var>vals</var> is an array of values for the map with the <em>same</em> number
of elements as <var>keys</var>.
</p>
<p>When called with no input arguments a default map is created with strings
as the key type and <code>"any"</code> as the value type.
</p>
<p>The <code>"UniformValues"</code> option specifies whether the values of
the map must be strictly of the same type. If <var>is_uniform</var> is true, any
values which would be added to the map are first validated to ensure they
are of the correct type.
</p>
<p>When called with <code>"KeyType"</code> and <code>"ValueType"</code> arguments, create
an empty map with the specified types. The inputs <var>kt</var> and <var>vt</var> are
the types for the keys and values of the map respectively. Allowed values
for <var>kt</var> are <code>"char"</code>, <code>"double"</code>, <code>"single"</code>,
<code>"int32"</code>, <code>"uint32"</code>, <code>"int64"</code>, <code>"uint64"</code>.
Allowed values for <var>vt</var> are <code>"any"</code>, <code>"char"</code>,
<code>"double"</code>, <code>"single"</code>, <code>"int32"</code>, <code>"uint32"</code>,
<code>"int64"</code>, <code>"uint64"</code>, <code>"logical"</code>.
</p>
<p>The return value <var>m</var> is an object of the containers.Map class.
</p>
<p><strong>See also:</strong> <a href="Creating-Structures.html#XREFstruct">struct</a>.
</p></dd></dl>
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