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Function std.ascii.isControl
Prototype
bool isControl( dchar c ) pure nothrow @nogc @safe;
Parameters
| Name | Description |
|---|---|
| c | The character to test. |
Returns
Whether c
Example
assert( isControl('\0'));
assert( isControl('\022'));
assert( isControl('\n')); // newline is both whitespace and control
assert(!isControl(' '));
assert(!isControl('1'));
assert(!isControl('a'));
assert(!isControl('#'));
// N.B.: non-ASCII Unicode control characters are not recognized:
assert(!isControl('\u0080'));
assert(!isControl('\u2028'));
assert(!isControl('\u2029'));
Authors
Walter Bright and Jonathan M Davis