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    <p>std::for_each expects a unary function (or at least something with the typedefs of a unary function). </p> <p>std::reverse&lt;> is a binary function. It takes two iterators. It would be possible to bind it all together using boost::bind, but it would be a pretty horrible mess. Something like:</p> <pre><code>boost::bind( &amp;std::reverse&lt;std::string::iterator&gt;, boost::bind(&amp;std::string::begin, _1), boost::bind(&amp;std::string::end, _1)) </code></pre> <p>Better, I think, would be to write a reusable function called reverse_range like so:</p> <pre><code>template &lt;class Range&gt; void reverse_range(Range&amp; range) { std::reverse(range.begin(), range.end()); } </code></pre> <p>(probably with some metaprogramming to ensure that Range&amp; isn't a double-reference)</p> <p>And then use that in your for_each (after adapting it to be a unary function, of course).</p> <pre><code>std::for_each(v.begin(), v.end(), std::ptr_fun(&amp;reverse_range&lt;std::string&gt;)); </code></pre> <p>EDIT:</p> <p>Because string::begin and string::end have both const and non-const variants, it is necessary to cast them (as litb discovered while I was off writing them to test my answer ... +1!). This makes it very verbose. Typedefs can make it a bit more sanitary, but to stick with the one-liner theme:</p> <pre><code>boost::bind( &amp;std::reverse&lt;std::string::iterator&gt;, boost::bind( (std::string::iterator (std::string::*)())&amp;std::string::begin, _1), boost::bind( (std::string::iterator (std::string::*)())&amp;std::string::end, _1) ) ); </code></pre> <p>Which just screams for refactoring.</p> <p>Finally, because I'm bored, bonus points for C++0x:</p> <pre><code>std::for_each(v.begin(), v.end() [](std::string&amp; s){ std::reverse(s); }); </code></pre> <p>EDIT: boost::bind works just fine, no need for boost::lambda.</p>
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    1. POReversing strings in a vector using for_each and bind
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    1. USKaz Dragon
    1. USKaz Dragon
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      1. VTUpMod
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    1. CONice! That's exactly what I wanted to know. Thank you!
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      1. USfmuecke
    2. COI tried and this one works: `boost::bind(&std::reverse<std::string::iterator>, boost::bind((std::string::iterator(std::string::*)())&std::string::begin, _1),boost::bind((std::string::iterator(std::string::*)())&std::string::end, _1))`
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      1. USJohannes Schaub - litb
    3. COSurely, i would prefer a manual loop :)
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      1. USJohannes Schaub - litb
 

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