reserveCapacity(_:)
Reserves enough space in the string’s underlying storage to store the specified number of ASCII characters.
Declaration
mutating func reserveCapacity(_ n: Int)Parameters
- n:
The minimum number of ASCII character’s worth of storage to allocate.
Discussion
Because each character in a string can require more than a single ASCII character’s worth of storage, additional allocation may be necessary when adding characters to a string after a call to reserveCapacity(_:).