The source code in XS is being compiled into the machine code. See perlxs for details, but it's rather advanced, so maybe start with Wikipedia that has a nice basic introduction.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: "symbol lookup error" message help by choroba
in thread "symbol lookup error" message help by Special_K

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