ToUpper

Returns a copy with ASCII letters converted to uppercase.

Module: Std

Signature

func ToUpper(self) -> String;

Returns

String — a new string with every ASCII lowercase letter (a–z) uppercased.

Description

Only ASCII letters are affected; all other bytes are copied unchanged. The receiver is left untouched. To modify the string in place, use ToUpperInPlace.

See also

• String — the string type
• ToLower — the lowercase counterpart
• ToUpperInPlace — the in-place variant