find_if

Description

Returns the result type of find_if given the sequence and predicate types.

Synopsis

template<
    typename Sequence,
    typename Pred
    >
struct find_if
{
    typedef unspecified type;
};

Parameters

Parameter	Requirement	Description
`Sequence`	A model of Forward Sequence	Operation's argument
`Pred`	A model of MPL Lambda Expression	Operation's arguments

Expression Semantics

result_of::find_if<Sequence, Pred>::type

Return type: A model of the same iterator category as the iterators of Sequence.

Semantics: Returns an iterator to the first element in Sequence for which Pred evaluates to true. Returns result_of::end<Sequence>::type if there is no such element.

Complexity

Linear. At most result_of::size<Sequence>::value comparisons.

Header

#include <boost/fusion/algorithm/query/find_if.hpp>