Algo::IndexOfBy

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References

namespace Algo  
{  
    template<typename RangeType, typename ValueType, typename ProjectionType>  
    auto Algo::IndexOfBy  
    (  
        RangeType && Range,  
        const ValueType & Value,  
        ProjectionType Proj  
    )  
}  
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namespace Algo {     template<typename RangeType, typename ValueType, typename ProjectionType>     auto Algo::IndexOfBy     (         RangeType && Range,         const ValueType & Value,         ProjectionType Proj     ) }

Remarks

Returns the index of the first element in the range whose projection is equal to the given value. The index of the first element found, or (SizeType)-1 if none was found (where SizeType = decltype(GetNum(Range)))

Parameters