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Function `std.ascii.toUpper`

Converts an ASCII letter to uppercase.


						
				auto auto toUpper(C)
				(
				

				  C c
				

				)
				

				if (is(C : dchar));

Parameters

Name	Description
c	Any type which implicitly converts to `dchar`. In the case where it's a built-in type, or an enum of a built-in type, `Unqual!(OriginalType!C)` is returned, whereas if it's a user-defined type, `dchar` is returned.

Returns

The corresponding uppercase letter, if c is a lowercase ASCII character, otherwise c itself.

Example

writeln(toUpper('a')); // 'A'
writeln(toUpper('A')); // 'A'
writeln(toUpper('#')); // '#'

// N.B.: Non-ASCII Unicode lowercase letters are not converted.
writeln(toUpper('á')); // 'á'

Authors

Walter Bright and Jonathan M Davis

License

Boost License 1.0.