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Function std.ascii.isAlphaNum

Prototype

bool isAlphaNum(
  dchar c
) pure nothrow @nogc @safe;

Parameters

NameDescription
c The character to test.

Returns

Whether c is a letter or a number (0..9, a..z, A..Z).

Example

assert( isAlphaNum('A'));
assert( isAlphaNum('1'));
assert(!isAlphaNum('#'));

// N.B.: does not return true for non-ASCII Unicode alphanumerics:
assert(!isAlphaNum('รก'));

Authors

Walter Bright and Jonathan M Davis

License

Boost License 1.0.

Comments