This works exactly as expected...<br><br><span style="font-family: courier new,monospace;">void f( unsigned &amp; val ) { val *= 2; }</span><br style="font-family: courier new,monospace;"><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">unsigned i = 3;</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">boost::bind( f, _1)( i );</span><br style="font-family: courier new,monospace;">
<br>with i being doubled. What I don&#39;t get is why I don&#39;t need to<br>say<br><br><span style="font-family: courier new,monospace;">boost::bind( f, boost::ref( _1 ) )( i );</span><br><br>and conversely how I specify that I want bind to pass by value<br>
rather than by reference for the placeholder.<br><br>Thanks<br><br>- Rob.<br>