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# get one file here, as $file
$text =~ s/this/that/smg;
use Perl6::Slurp; #<= only handles input at present
use File::Slurp; # permits writing.
... with renaming here ? (see above).
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
Results (153 votes),