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Function std.uni.normalize

Returns input string normalized to the chosen form. Form C is used by default.

inout(C)[] normalize(NormalizationForm norm = NFC, C) (
  scope return inout(C)[] input
) pure @safe;

For more information on normalization forms see the normalization section.


In cases where the string in question is already normalized, it is returned unmodified and no memory allocation happens.


// any encoding works
wstring greet = "Hello world";
assert(normalize(greet) is greet); // the same exact slice

// An example of a character with all 4 forms being different:
// Greek upsilon with acute and hook symbol (code point 0x03D3)
writeln(normalize!NFC("ϓ")); // "\u03D3"
writeln(normalize!NFD("ϓ")); // "\u03D2\u0301"
writeln(normalize!NFKC("ϓ")); // "\u038E"
writeln(normalize!NFKD("ϓ")); // "\u03A5\u0301"


Dmitry Olshansky


Boost License 1.0.