ca71c038a1
IO#popen is called for each call to Hardware.is_64_bit?; this becomes costly when it is repeatedly invoked. Luckily it is an invariant, so we can store it in a class variable. False is a valid value for this method, so the usual ||= idiom is not applicable. Signed-off-by: Jack Nagel <jacknagel@gmail.com>
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