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Also: looking at Erlang helps. The language is very simple, pure (all data is immutable) , and is all about asynchronous processing.
– 9000
Commented Jan 22, 2011 at 2:34
Basically after understanding the benefits of functional approach and changing state only when it matters will automatically make sure that even if you work in say something like Java, you know when to modify state and how to keep such things in control.
– Amogh Talpallikar
Commented Oct 4, 2013 at 12:40
Disagree - a fact that program is composed from 'pure' functions doesn't mean that it don't iteract with outside world, it's mean, that every function in a program for one set of arguments will always return same result, and this is (purity) a big deal, because, from practical view - such program will be less buggy, more 'testable', successful execution of functions could be proved mathematically.
– Gill Bates
Commented Nov 10, 2013 at 17:05

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