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Function std.ascii.isDigit
Prototype
bool isDigit( dchar c ) pure nothrow @nogc @safe;
Parameters
| Name | Description |
|---|---|
| c | The character to test. |
Returns
Whether c
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
Walter Bright and Jonathan M Davis