fmt_charcc [function]

fmt_charcc( string char, string class )

checks if the first character of string char is included in the character class class

• character class is a regex-like list of specific symbols and ranges (its low and high symbols separated by "-"), optionally prepended by "^" that inverts the scope of the class

fmt_charcc( ".", "a-zA-Z0-9" ); // returns false
fmt_charcc( "x", "a-zA-Z0-9" ); // returns true