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assign [C++ Reference]
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<h2><a name="assign" id="assign">assign</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="co2">#include <deque></span>
<span class="kw4">void</span> assign<span class="br0">(</span> size_type num<span class="sy0">,</span> <span class="kw4">const</span> TYPE<span class="sy0">&</span> val <span class="br0">)</span><span class="sy0">;</span>
<span class="kw4">void</span> assign<span class="br0">(</span> input_iterator start<span class="sy0">,</span> input_iterator end <span class="br0">)</span><span class="sy0">;</span></pre>
<p>
The assign() function either gives the current deque the values from start to
end, or gives it num copies of val.
</p>
<p>
This function will destroy the previous contents of the deque.
</p>
<p>
For example, the following code uses assign() to put 10 copies of the integer
42 into a deque:
</p>
<pre class="c code c++" style="font-family:monospace;"> deque<span class="sy0"><</span>int<span class="sy0">></span> dq<span class="sy0">;</span>
dq.<span class="me1">assign</span><span class="br0">(</span> 10<span class="sy0">,</span> 42 <span class="br0">)</span><span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> deque<span class="sy0"><</span>int<span class="sy0">>::</span><span class="me2">size_type</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> dq.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> i<span class="sy0">++</span> <span class="br0">)</span> <span class="br0">{</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> dq<span class="br0">[</span>i<span class="br0">]</span> <span class="sy0"><<</span> <span class="st0">" "</span><span class="sy0">;</span>
<span class="br0">}</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> endl<span class="sy0">;</span></pre>
<p>
The above code displays the following output:
</p>
<pre class="code">
42 42 42 42 42 42 42 42 42 42</pre>
<p>
The next example shows how assign() can be used to copy one deque to another:
</p>
<pre class="c code c++" style="font-family:monospace;"> deque<span class="sy0"><</span>int<span class="sy0">></span> dq1<span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> <span class="kw4">int</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> <span class="nu0">10</span><span class="sy0">;</span> i<span class="sy0">++</span> <span class="br0">)</span> <span class="br0">{</span>
dq1.<span class="me1">push_back</span><span class="br0">(</span> i <span class="br0">)</span><span class="sy0">;</span>
<span class="br0">}</span>
deque<span class="sy0"><</span>int<span class="sy0">></span> dq2<span class="sy0">;</span>
dq2.<span class="me1">assign</span><span class="br0">(</span> dq1.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">,</span> dq1.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span> <span class="br0">)</span><span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> deque<span class="sy0"><</span>int<span class="sy0">>::</span><span class="me2">size_type</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> dq2.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> i<span class="sy0">++</span> <span class="br0">)</span> <span class="br0">{</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> dq2<span class="br0">[</span>i<span class="br0">]</span> <span class="sy0"><<</span> <span class="st0">" "</span><span class="sy0">;</span>
<span class="br0">}</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> endl<span class="sy0">;</span></pre>
<p>
When run, the above code displays the following output:
</p>
<pre class="code">
0 1 2 3 4 5 6 7 8 9</pre>
<p>
Related Topics: <a href="../../stl/deque/insert.html" class="wikilink1" title="stl:deque:insert">insert</a>, <a href="../../stl/deque/push_back.html" class="wikilink1" title="stl:deque:push_back">push_back</a>, <a href="../../stl/deque/push_front.html" class="wikilink1" title="stl:deque:push_front">push_front</a>
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