Basic HTML version of Foils prepared Sept 20 97

Foil 24 Some Remarks about Subroutines - I

From Perl5 and Advanced Perl4 Features Computational Science for Information Age Course CPS616 -- Sept 20 97. by Geoffrey C. Fox,Nancy McCracken,Tom Scavo
1 Subroutines must typically be predefined (with new sub command) if they are to be accessed with
2 subname(list); # or one can use
3 &subname(); # as equivalent to subname()
4 so that & notation is typically unnecessary
5 use packagename qw( NAME1 NAME2 NAME3); # imports routines NAME1 NAME2 NAME3 from package packagename
6 Notice qw() is new Perl5 routine to generate quotes around space separated words
  • qw(args); equivalent to split(' ', q(args));
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