isDigit

Value must contain only digits (0 … 9)

@safe

@constraint

struct isDigit {

bool check(T s);

static immutable

string errorMessage;

}

Members

Functions

check bool check(T s): Undocumented in source. Be warned that the author may not have intended to support it.

Static variables

errorMessage string errorMessage;: Undocumented in source.

Examples

assert(test!isDigit("12998"));
assert(test!isDigit("1"));

assert(!test!isDigit("abcdefghijklmnopqrstuvwxyz"));
assert(!test!isDigit("ABCDEFGHIUJKLMNOPQRSTUVXYZ"));
assert(!test!isDigit("A12"));
assert(!test!isDigit("Az12"));
assert(!test!isDigit("Müll"));

assert(!test!isDigit('a'));
assert(!test!isDigit('A'));
assert(test!isDigit('9'));
assert(!test!isDigit("\xFF"));

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Source

See Implementation