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bind1st [C++ Reference]
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<h2><a name="bind1st" id="bind1st">bind1st</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> template <span class="sy0"><</span>class Operation<span class="sy0">,</span> class T<span class="sy0">></span>
binder1st<span class="sy0"><</span>Operation<span class="sy0">></span> bind1st <span class="br0">(</span><span class="kw4">const</span> Operation<span class="sy0">&</span> op<span class="sy0">,</span> <span class="kw4">const</span> T<span class="sy0">&</span> x<span class="br0">)</span><span class="sy0">;</span></pre>
<p>
bind the first argument of the binary function.
</p>
<p>
For example:
</p>
<pre class="c code c++" style="font-family:monospace;"><span class="co2">#include <iostream></span>
using std<span class="sy0">::</span><a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a><span class="sy0">;</span>
<span class="co2">#include <algorithm></span>
using std<span class="sy0">::</span><span class="me2">transform</span><span class="sy0">;</span>
<span class="co2">#include <functional></span>
using std<span class="sy0">::</span><span class="me2">bind1st</span><span class="sy0">;</span>
using std<span class="sy0">::</span><span class="me2">plus</span><span class="sy0">;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">int</span> argc<span class="sy0">,</span> <span class="kw4">char</span> <span class="sy0">**</span>argv<span class="br0">)</span> <span class="br0">{</span>
<span class="kw4">int</span> a1<span class="br0">[</span><span class="br0">]</span><span class="sy0">=</span><span class="br0">{</span>0<span class="sy0">,</span>1<span class="sy0">,</span>2<span class="sy0">,</span>3<span class="sy0">,</span>4<span class="sy0">,</span>5<span class="br0">}</span><span class="sy0">;</span>
<span class="kw4">const</span> size_t SIZE<span class="sy0">=</span><span class="kw4">sizeof</span><span class="br0">(</span>a1<span class="br0">)</span><span class="sy0">/</span><span class="kw4">sizeof</span><span class="br0">(</span><span class="sy0">*</span>a1<span class="br0">)</span><span class="sy0">;</span>
transform<span class="br0">(</span>a1<span class="sy0">,</span>a1<span class="sy0">+</span>SIZE<span class="sy0">,</span>a1<span class="sy0">,</span>bind1st<span class="br0">(</span>plus<span class="sy0"><</span>int<span class="sy0">></span><span class="br0">(</span><span class="br0">)</span><span class="sy0">,</span>SIZE<span class="br0">)</span><span class="br0">)</span><span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span>size_t i<span class="sy0">=</span><span class="nu0">0</span><span class="sy0">;</span>i<span class="sy0"><</span>SIZE<span class="sy0">;</span>i<span class="sy0">++</span><span class="br0">)</span><span class="br0">{</span>
cout<span class="sy0"><<</span>a1<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>
<span class="kw1">return</span> EXIT_SUCCESS<span class="sy0">;</span>
<span class="br0">}</span></pre>
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