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remove_if

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remove_if

template<class FwdIt, class Pred>
    FwdIt remove_if(FwdIt first, FwdIt last, Pred pr);

The template function effectively assigns first to X, then executes the statement:

if (!pr(*(first + N)))
    *X++ = *(first + N);

once for each N in the range [0, last - first). It then returns X. Thus, the function removes from the sequence all elements for which the predicate pr(*(first + N)) is true, without altering the relative order of remaining elements, and returns the iterator value that designates the end of the revised sequence.

See the related sample program.