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##### 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;
    };

Table 1.50. 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>
    #include <boost/fusion/include/find_if.hpp>