Cleaning up an STL list/vector of pointers
for(list<Foo*>::const_iterator it = foo_list.begin(); it != foo_list.end(); ++it)
{
delete *it;
}
foo_list.clear();
Since we are throwing down the gauntlet here... "Shortest chunk of C++"
static bool deleteAll( Foo * theElement ) { delete theElement; return true; }
foo_list . remove_if ( deleteAll );
I think we can trust the folks who came up with STL to have efficient algorithms. Why reinvent the wheel?
For std::list<T*>
use:
while(!foo.empty()) delete foo.front(), foo.pop_front();
For std::vector<T*>
use:
while(!bar.empty()) delete bar.back(), bar.pop_back();
Not sure why i took front
instead of back
for std::list
above. I guess it's the feeling that it's faster. But actually both are constant time :). Anyway wrap it into a function and have fun:
template<typename Container>
void delete_them(Container& c) { while(!c.empty()) delete c.back(), c.pop_back(); }