I have code which calls unary_function with the
count_if() algorithm. Like this:
class do_hasContainerBlock : public
unary_function
{
public:
bool operator() (BlockData* bd) {
return bd->isContainer();
}
};
bool hasContainerBlock(list& bdl) {
int count = count_if (bdl.begin(), bdl.end(),
do_hasContainerBlock());
return (count > 0);
}
And I would like to replace the unary function with
boost bind library, like this:
int count = count_if (bdl.begin(), bdl.end(),
bind( &BlockData::isContainer, _1) );
But this code does not copmile,I get this error:
g++ -O0 -g3 -Wall -c -fmessage-length=0
-oBlockDataUtils.o ../BlockDataUtils.cpp
../BlockDataUtils.cpp: In function âbool
hasContainerBlock(BlockDataList&)â:
../BlockDataUtils.cpp:95: error: no matching function
for call to âbind(<unknown type>, const
boost::lambda::lambda_functor
&)â
Can you please tell me how to fix that?
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