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bool isUpper (
) pure nothrow @nogc @safe;
|c||The character to test.|
c is an uppercase ASCII letter (A .. Z).
assert( isUpper('A')); assert(!isUpper('a')); assert(!isUpper('#')); // N.B.: does not return true for non-ASCII Unicode uppercase letters assert(!isUpper('á')); assert(!isUpper('Á'));
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