- hex EXPR
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- hex
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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 $_.
print hex '0xAf'; # prints '175'
print hex 'aF'; # same
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Hex strings may only represent integers. Strings that would cause integer overflow
trigger a warning. Leading whitespace is not stripped, unlike oct().
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