Instance Methodswift 6.0.1Swift

    insert(_:at:)

    Inserts a new character at the specified position.

    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.

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

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