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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.


						
				bool isValidCodeUnit(E)
				(
				

				  E c
				

				);

Standards

Unicode 5.0, ASCII, ISO-8859-1, ISO-8859-2, WINDOWS-1250, WINDOWS-1251, 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(Windows1250Char) 0x80));
assert(!isValidCodeUnit(cast(Windows1250Char) 0x81));
assert( isValidCodeUnit(cast(Windows1251Char) 0x80));
assert(!isValidCodeUnit(cast(Windows1251Char) 0x98));
assert( isValidCodeUnit(cast(Windows1252Char) 0x80));
assert(!isValidCodeUnit(cast(Windows1252Char) 0x81));

Authors

Janice Caron

License

Boost License 1.0.