BufferUtil Namespace Reference

Functions
template<typename T >
int	CountValid (const TArray< T > &Data, const TFunction< bool(T)> &Predicate, int MaxIndex=-1, int StartIndex=0)
template<typename T >
int	FilterInPlace (TArray< T > &Data, const TFunction< bool(T)> &Predicate, int MaxIndex=-1, int StartIndex=0)
template<typename T , typename EnumerableType >
void	AppendElements (TArray< T > &AppendTo, EnumerableType Enumerable)

Detailed Description

Utility functions for processing arrays of objects

Function Documentation

AppendElements()

template<typename T , typename EnumerableType >

void BufferUtil::AppendElements	(	TArray< T > &	AppendTo,
		EnumerableType	Enumerable
	)

Append enumerable elements to an array

Parameters

Data	array to append to
Enumerable	object that can be iterated over with a range-based for loop

CountValid()

template<typename T >

int BufferUtil::CountValid	(	const TArray< T > &	Data,
		const TFunction< bool(T)> &	Predicate,
		int	MaxIndex = -1,
		int	StartIndex = 0
	)

Count number of elements in array (or within requested range) that pass Predicate test

Parameters

Data	Array to process
Predicate	filtering function, return true indicates valid
MaxIndex	optional maximum index in array (exclusive, default is to use array size)
StartIndex	optional start index in array (default 0)

Returns

number of values in array that returned true for Predicate

FilterInPlace()

template<typename T >

int BufferUtil::FilterInPlace	(	TArray< T > &	Data,
		const TFunction< bool(T)> &	Predicate,
		int	MaxIndex = -1,
		int	StartIndex = 0
	)

Removes elements of array (or within requested range) that do not pass Predicate, by shifting forward. Does not remove remaining elements

Parameters

Data	Array to process
Predicate	filtering function, return true indicates valid
MaxIndex	optional maximum index in array (exclusive, default is to use array size)
StartIndex	optional start index in array (default 0)

Returns

Number of valid elements in Data after filtering