Instance Method

insert(_:at:)

Inserts a new character at the specified position.

Declaration

mutating func insert(_ newElement: Character, at i: String.Index)

Parameters

newElement

The new character to insert into the string.

i

A valid index of the string. If i is equal to the string’s end index, this methods appends newElement to the string.

Discussion

Calling this method invalidates any existing indices for use with this string.

Complexity: O(n), where n is the length of the string.

Relationships

From Protocol

See Also

Inserting Characters

func insert<C>(contentsOf: C, at: String.Index)

Inserts the elements of a sequence into the collection at the specified position.

func insert<S>(contentsOf: S, at: String.Index)

Inserts a collection of characters at the specified position.