Struct: IterSizeHint

struct IterSizeHint;

Hint about minimum and optionally maximum number of items iterator can yield.

See TQuery::SizeHint.

Example

template <typename I>
void IterCollectIntoArray(I&& Iterator, TArray<typename I::Item>& Result)
{
	const auto SizeHint = Iterator.SizeHint();
	const auto Capacity = SizeHint.Maximum.IsSet() ? SizeHint.Maximum.GetValue() : SizeHint.Minimum;
	Result.Reserve(Result.Num() + Capacity);
	while (auto QueryItem = Iterator.Next())
	{
		Result.Add(QueryItem.GetValue());
	}
}

Properties

• Maximum

  public:
  TOptional<uint32> Maximum;
  

  ---

  Maximum number of items iterator can yield.

• Minimum

  public:
  uint32 Minimum;
  

  ---

  Minimum number of items iterator can yield.

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