Re^2: Generating accessors for complex structures inside the object

I've read your code attentively, now I want to ask a few questions please. Here:

...
   D => {
      E => {
         F => 'G'
      }
   },
##   Z => 'G', # Duplicate test
...
[download]

If I'll uncomment 'Z' key there will be a warning thrown about duplicate 'G' key. But 'G' is not a key here, it's keys value.

And here:

##   X => [1,2,3], # Bad type test
[download]

Why arrayref is a bad type?

And the last one: I tried to add mutators to your code through assignment the lvalue attribute to _derefernce sub but it has no effect =( Any ideas of how can I do this?

Comment on Re^2: Generating accessors for complex structures inside the object Select or Download Code

Replies are listed 'Best First'.
Re^3: Generating accessors for complex structures inside the object by snoopy (Curate) on Jan 15, 2008 at 22:33 UTC
Hi KSURi, Thanks for your questions. Before getting into the details; I did make some assumptions that need to be tested: The class level structure (defined in `Foo`) is a effectively a struct definition: So, if in Foo, you define `package Foo; use base qw/Class::StructAccessors/; __PACKAGE__->mk_struct_accessors({A => {B => C}});` [download] then the actual method created is `C`. `my $obj = {}; bless $obj, "Foo"; $obj->{A}{B}{C} = "this is a C"; print $obj->C; # outputs "this is a C"` [download] If you want another object with another fixed structure, then you need another class `package Bar; use base qw/Class::StructAccessors/; __PACKAGE__->mk_struct_accessors({X => {Y => Z}});` [download] This will generate accessor method for `Z`. In an nutshell, the above code works when you have finite number of structures that are know at run time. I'm getting the feeling that you want a more dynamic solution that'll work at the instance on any structure; something like: `my $obj = bless {a => {b => {c => 'data for c'}}}, "Class::StructAc +cessorMk2";` [download] Always happy to assist (and code) :-) Please advise.	[reply] [d/l] [select]
Re^4: Generating accessors for complex structures inside the object by KSURi (Monk) on Jan 23, 2008 at 19:00 UTC
> I'm getting the feeling that you want a more dynamic solution that'll work at the instance on any structure; Yep, that will be very usefull not only for me. Though I've solved my own problem (through object redesigning) I'll be glad to read ideas and etc. Thanks for your assist)	[reply]