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#!/usr/bin/perl -w #didn't use strict, to make the example clearer. ... } print "$foo\n"; # prints 3.
#!/usr/bin/perl -w use strict; #<- very important. ... } print "$bar\n"; # <- compiler gives error.$bar does not exsist (kind o +f). print "$foo\n"; # you get 3.
s/compiler/interpreter/ig;
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