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Function std.encoding.isValidCodeUnit
Returns true if the code unit is legal. For example, the byte 0x80 would not be legal in ASCII, because ASCII code units must always be in the range 0x00 to 0x7F.
Prototype
bool isValidCodeUnit(E)( E c );
Standards
Unicode 5.0, ASCII, ISO-8859-1, WINDOWS-1252
Parameters
| Name | Description |
|---|---|
| c | the code unit to be tested |
Example
assert(!isValidCodeUnit(cast(char)0xC0)); assert(!isValidCodeUnit(cast(char)0xFF)); assert( isValidCodeUnit(cast(wchar)0xD800)); assert(!isValidCodeUnit(cast(dchar)0xD800)); assert(!isValidCodeUnit(cast(AsciiChar)0xA0)); assert( isValidCodeUnit(cast(Windows1252Char)0x80)); assert(!isValidCodeUnit(cast(Windows1252Char)0x81));
Authors
Janice Caron