Instance Method インスタンスメソッド

index(beforeRun:)

Returns the position of the run immediately before a run indicated by an index.

Declaration 宣言 

func index(beforeRun i: Index) -> Index

Parameters パラメータ

i

The index of a run in the attributed string.

Return Value 戻り値

The position of the first run immediately before the beginning of the i-th run.

See Also 参照

Accessing Indices Before a Known Position

func index(beforeCharacter: Index) -> Index
Returns the position of the character immediately before another charcter indicated by an index.
func index(beforeUnicodeScalar: Index) -> Index
Returns the position of the Unicode scalar immediately before a Unicode scalar indicated by an index.