std.uni.to_upper - multiple declarations

Prototype

dchar toUpper(
  dchar c
) pure nothrow @nogc @safe;

Warning

Certain alphabets like German and Greek have no 1:1 upper-lower mapping. Use overload of toUpper which takes full string instead.

toUpper can be used as an argument to std.algorithm.iteration.map to produce an algorithm that can convert a range of characters to upper case without allocating memory. A string can then be produced by using std.algorithm.mutation.copy to send it to an std.array.appender.

Example

import std.algorithm;
import std.uni;
import std.array;

auto abuf = appender!(char[])();
"hello".map!toUpper.copy(&abuf);
assert(abuf.data == "HELLO");

Prototype

S toUpper(S)(
  S s
) pure @trusted
if (isSomeString!S);