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Interprets EXPR as a hex string and returns the corresponding value.
(To convert strings that might start with either 0
, 0x
, or 0b, see
oct.) If EXPR is omitted, uses $_
.
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 printf, sprintf, and unpack.
