Re^3: how to code a class and use it with hash of hash as data member?

i guess I am hugely confuse about when to use $self->...
in the first reply to my question, the code uses the
%serverMap directly in each of the methods.. i guess because i define it outside all methods, it is visible???...
but in yours, you use $self to access to it.
another question of mine: i se eyou make a new constructor (more compact one), but
don't quite get what it does? your decision for the change? my original verison has this package @ISA CLASS::Singleton...
to prevent users of this class to have more than 1 copy of serverMap
.. but from your comment in your psot, is that step necessary anymore? thanks

Comment on Re^3: how to code a class and use it with hash of hash as data member?

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Re^4: how to code a class and use it with hash of hash as data member? by chromatic (Archbishop) on Mar 17, 2006 at 19:50 UTC
The purpose of using `$self` is so that you can have more than one object, each with its own member data. The original code allowed people to create multiple objects, but each accessed the same hash. I don't see any real reason to use objects in that case. My `$self` doesn't access `%serverMap`. Each object gets its own copy of that data. I changed my constructor to throw out unnecessary code and to allow inheritance by using the two-argument form of bless, which is almost always the right thing to do. My code doesn't create a singleton, but I wasn't sure if you needed that.	[reply] [d/l] [select]
Re^5: how to code a class and use it with hash of hash as data member? by edwardt_tril (Sexton) on Mar 17, 2006 at 20:17 UTC
hi i get an compile error in my %self = %{ $serverMap{ default } }, @_; error is "Useless use of variable in void context". I think it is complaining about @_? but not quite sure what it means .. i guess the code tried to set %self to default if people don't enter a hash of hash as part of new. should that be %{ $serverMap{ default } } \|\| @_ ?? thanks	[reply]