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Re: passing multiple hashes to a subroutine

by anneli (Pilgrim)
on Oct 20, 2011 at 21:13 UTC ( #932756=note: print w/replies, xml ) Need Help??

in reply to passing multiple hashes to a subroutine

Avoid prototypes unless you really need to use them; they're not like argument/parameter lists in other languages (frankly I think your use here will confuse anyone reading your code!).

Instead, just pass references to the hashes. Thus:

sub count_orientation { my $ref = shift; my %x = %{(shift)}; # this is still correct! my $y = %{(shift)}; # ... } count_orientation($x, \%error_start, \%score); # or: count_orientation($x, {%error_start}, {%score});

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[Corion]: Yesterday I've been mulling over how to best generate HTTP requests from permutations of values but I haven't found a nice API for passing in the "template" of the HTTP request yet. I guess I'll have to do a SoPW for that
[Corion]: The API itself will basically be my $iter = generate_http_requ ests(method => 'GET', url => '/settings/:name', headers => ???, get_params => ['foo','bar']), but I'm not sure how to parametrize values in the headers and how to specify lists of ...
[choroba]: On the other hand, lots of options to receive the requests :-)
[Corion]: ... values to be used. For example, I think for headers, one would want to have various kinds of Content-Encoding headers, but for the get_parameters one would have various kinds of Bobby Tables
[choroba]: What about [metadoc:// Algorithm::Loops]?
[Corion]: choroba: Yeah, but handing off the request to Dancer,Plack, Mojolicious,LWP is easy once I have the data filled into some structure ;))
[choroba]: Algorithm::Loops
[Corion]: choroba: I'm using that to generate the permutations, but I don't know how the user can pass the intended values to my function in a sane way
[Corion]: I have a prototype that permutes the get_parameters, but the values used for the get parameters should be different from the values used for the headers and potentially for parts of the URL
[Corion]: But yes, in general, my approach will be "split the URL into another set of parameters, generate an array of allowed values for each parameter and then NestedLoops() over the set"

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