Basic HTML version of Foils prepared Sept 20 97

Foil 28 Some Remarks about Subroutines - V -- Separating Arguments

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 There is a well-known problem with ordinary ways of using Perl subroutine arguments
2 If one has a argument list such as
3 (@list1, @list2, .... ), then the subroutine sees a single list (array), which is the concatenation of the component lists
4 This can be avoided using hard references with the \ operator. For example:
5 @tailings = popmany( \@a, \@b, \@c, \@d );
6 See next foil for code of popmany
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