=over =item hex EXPR X X =item hex Interprets EXPR as a hex string and returns the corresponding value. (To convert strings that might start with either C<0>, C<0x>, or C<0b>, see L.) If EXPR is omitted, uses C<$_>. print hex '0xAf'; # prints '175' print hex 'aF'; # same Hex strings may only represent integers. Strings that would cause integer overflow trigger a warning. Leading whitespace is not stripped, unlike oct(). To present something as hex, look into L, L, or L. =back