Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

> Unreal Engine API Reference > Runtime > Core > Algo > Algo::BinarySearchBy > Algo::BinarySearchBy

Light Theme

Dark Theme

Algo::BinarySearchBy

Returns index to the first found element with projected value matching Value in a range, the range must be sorted by predicate

Windows

MacOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Algo/BinarySearch.h
Include	#include "Algo/BinarySearch.h"

Syntax

namespace Algo
{
    template<typename RangeType, typename ValueType, typename ProjectionType, typename SortPredicateType>
    auto Algo::BinarySearchBy
    (
        RangeType & Range,
        const ValueType & Value,
        ProjectionType Projection,
        SortPredicateType SortPredicate
    )
}

Remarks

Returns index to the first found element with projected value matching Value in a range, the range must be sorted by predicate

Returns

Index of found element, or INDEX_NONE

Parameters

Parameter	Description
Range	The range to search, must be already sorted by SortPredicate
Value	The value to search for
Projection	Functor or data member pointer, called via Invoke to compare to Value
SortPredicate	Predicate for sort comparison, defaults to <

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss