Re: [squid-users] Adding Header file

Henrik Nordstrom wrote:
> Tor 2008-04-17 klockan 21:19 +0530 skrev Paras Fadte:
>
>> With respect to C++ , is a static member of a class like a global
>> variable?
>
> Yes, a class scoped (not object) global variable.
>
>> Does OOP in particular consider use of a static/global
>> variable as a bad programming practice?
>
> Most do..
>
> But it do make life a lot easier..

Which for leads to a few well-known problems, and the reasons why its
often considered bad. I'm not hypocritical to outlaw it, but advise
Programming carefully if you think you need any.

I judge it based on the objects design.
  - 'manager' type class with only one instance static/global can be
useful, simpler, and faster. Especially to guarantee the rule that there
is only one. Go ahead consider it.
  - minor object likely to have several usages or re-usage, static
becomes a major headache.
  - static variable in functions called recursively, MAJOR headache.

globals, I don't think are as evil as made out to be. Often a little
thought can lead you to conclude a direct need for being global. Or to a
way of cleanly scoping them somewhere so it does not matter.

My cleanup side-project is going through the main squid headers testing
all the usages these days.

Amos

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