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perl -MTime::HiRes -le "my $x=*Time::HiRes::gettimeofday{CODE};*Time:: +HiRes::gettimeofday = sub(){42};print Time::HiRes::gettimeofday; *Tim +e::HiRes::gettimeofday = $x;print Time::HiRes::gettimeofday"
use strict; use Time::HiRes; ... print "Modified: ", Time::HiRes::gettimeofday,"\n"; *Time::HiRes::gettimeofday = $x; print "Restored: ", Time::HiRes::gettimeofday