I can easily think of two situations where those have driven me MAD.
I need to connect to a different dateabase than I used to for party of an application. I have to change which variable names I'm using to use the right database.
I wrote one app, where it had a kernel so to speak, w/ a logger attached. Creating a new kernel would create a second running copy of everything, 'cept the logger, 'cause it was a singleton. Grrr!
Don't privatize your constructors! If I want a shared object, good, if not, it's just as good. The only thing I ever want globals are things like, numbers. 1 only has one value. 1!
Give me strength for today..
I will not talk it away..
Just for a moment..
It will burn through the clouds..
and shine down on me.
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