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Function std.ascii.isAlpha

bool isAlpha (
  dchar c
) pure nothrow @nogc @safe;

Parameters

NameDescription
c The character to test.

Returns

Whether c is an ASCII letter (A .. Z, a .. z).

Example

assert( isAlpha('A'));
assert(!isAlpha('1'));
assert(!isAlpha('#'));

// N.B.: does not return true for non-ASCII Unicode alphabetic characters:
assert(!isAlpha('รก'));

Authors

Walter Bright and Jonathan M Davis

License

Boost License 1.0.