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Function std.ascii.isHexDigit

Prototype

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

Parameters

NameDescription
c The character to test.

Returns

Whether c is a digit in base 16 (0..9, A..F, a..f).

Example

assert( isHexDigit('0'));
assert( isHexDigit('A'));
assert( isHexDigit('f')); // lowercase hex digits are accepted
assert(!isHexDigit('g'));
assert(!isHexDigit('G'));
assert(!isHexDigit('#'));

Authors

Walter Bright and Jonathan M Davis

License

Boost License 1.0.

Comments