Re: Singletons

Balog Pal <>
Sun, 16 Dec 2012 19:34:32 -0800 (PST)
On 11/26/2012 4:50 PM, Gene Bushuyev wrote:

Yes, a global state creates serious problems, they are well known, but
the solutions, like the link above trivialize the issues involved.
It's not just a matter of more verbose syntax to pass the state or
part thereof to every function or class that needs it, and it's not
just a matter of memory overhead storing the references, it's also (a
lot) more complicated logic. If the functions and classes have to work
as if there were no global state, but rather many states, they have to
take into account interactions between those states, which functions
working with a single global state don't need to care of. And if at
the end there is never a need for eliminating the global state then
all the extra work was done in vain. OTOH, if only ?dependency
injection? has been done and code still assumes that all references
are pointing to the same global state then those changes haven't
solved a single singleton problem.

Best summary of this subthread this far.

I'd really be glad if DI proponents would react something as possibly I
mislooked some point in the tech.

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