hash question

[tubbs]

Hi im new to perl and have already come across a bit of a problem. How do
you associate multiple elements with the key rather than just one i.e.
rather than just cold and weather, cold and weather and wet?

thanks

 

[Gunnar Hjalmarsson]

Hi im new to perl and have already come across a bit of a problem.
How do you associate multiple elements with the key rather than
just one i.e. rather than just cold and weather, cold and weather
and wet?

This group discusses the Perl programming language. It's not a
replacement for basic learning and looking up things in the docs.

http://learn.perl.org/

 

[gilgames]

@array = ('apple', 'plum', 'grapes'); #defines the array
$hash{fruit} = \@array; #associates the array reference w/ the key
@fruit = @{$hash{fruit}}; #dereferences the hash element
print "@fruit;" #prints the array

<<
Hi im new to perl and have already come across a bit of a problem. How do
you associate multiple elements with the key rather than just one i.e.
rather than just cold and weather, cold and weather and wet?

thank

 

[Ragnar Hafstað]

Hi im new to perl and have already come across a bit of a problem. How do
you associate multiple elements with the key rather than just one i.e.
rather than just cold and weather, cold and weather and wet?

you associate an array of elements with the key

you might want to read perodoc perllol , that discusses a similar
(but not the same) construct.

in brief:

$h{$key}=[$element1,$element2];

or
$h{$key}=\@array;

push @{$h{$key}},$newelement;


gnari

 

[Jürgen Exner]

How do you associate multiple elements with the key rather than just
one i.e. rather than just cold and weather, cold and weather and wet?

Not sure what you are asking for (what is the key and what is the value in
your example?), but maybe you are looking for a hash of arrays, which more
appropriately should be named hash of references to arrays?

See "perldoc perlreftut" or "perldoc perlref" for details.

jue