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Re: Creating a Moose object at run-time

by jeffa (Bishop)
on Oct 22, 2015 at 19:49 UTC ( #1145679=note: print w/replies, xml ) Need Help??


in reply to Creating a Moose object at run-time

An object in Perl is most often implemented as a hash, because an object is key/value store of attributes and a namespace by which the compiler/interpreter can locate its methods. Even in Moose, they are still most often implemented as hashes, so you can always add "attributes" at run time, you just don't get the type checking, coercions and automatic attribute accessors.

package Class; use Moose; package main; use strict; use warnings; use Data::Dumper; my $obj = Class->new; print Dumper $obj; $obj->{foo} = 'bar'; print Dumper $obj;

You have to ask yourself, why do i need to add attributes at runtime and if still valid, why do i need Moose sugar to make my code only slightly easier for me to churn out at the expense of reinventing Moose, as the "contentious solution" you linked to points out.

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

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Re^2: Creating a Moose object at run-time
by talexb (Canon) on Oct 22, 2015 at 21:31 UTC

    Thanks for the sample code -- I imagined that it might be a lot more complicated. I'm fairly new to Moose.

      You have to ask yourself, why do i need to add attributes at runtime and if still valid, why do i need Moose sugar to make my code only slightly easier for me to churn out at the expense of reinventing Moose, as the "contentious solution" you linked to points out.

    A fair point. It may be necessary to total some of the fields in a collection of Moose objects -- that's the only reason I can think of right now.

    My preference is just to stick with a simple array of hashrefs until it's necessary to get more complicated.

    Alex / talexb / Toronto

    Thanks PJ. We owe you so much. Groklaw -- RIP -- 2003 to 2013.

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