isHex

1 assert( isHex("00"c) );
2 assert( isHex("FF"c) );
3 assert( isHex("Ffae0"c) );
4 assert( isHex("AB"c) );
5 assert( isHex("abdef"c) );
6 assert( isHex("ABCD"c) );
7 assert( isHex("0A12CD00"c) );
8 assert( isHex("FFFFFFFFFFFFFFFF"c) );
9 
10 assert( isHex("00ER"c) == false );
11 assert( !isHex("0xW"c) );