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Function std.ascii.isDigit
bool isDigit
(
dchar c
) pure nothrow @nogc @safe;
Parameters
Name | Description |
---|---|
c | The character to test. |
Returns
Whether c
is a digit (0 .. 9).
Example
assert( isDigit('3'));
assert( isDigit('8'));
assert(!isDigit('B'));
assert(!isDigit('#'));
// N.B.: does not return true for non-ASCII Unicode numbers
assert(!isDigit('0')); // full-width digit zero (U+FF10)
assert(!isDigit('4')); // full-width digit four (U+FF14)
Authors
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.