On Mon, 21 Dec 2015 12:55:05 +0100, Oleg
The only reason to have laziness is to avoid recomputations of argument computations should an argument be used more than once -- at the cost of taking memory to store the result of the first evaluation. Thus "performing a time optimization which is a space pessimization" is exactly what laziness is all about -- as the article mentioned earlier argued. Laziness isn't an absolute good -- it is a time-space trade-off, which is not always beneficial.
In paper "Why Functional Programming Matters"[0], John Hughes shows how lazy functional programming can be used for better modularity. A more precise title for the paper would be "Why Lazy Functional Programming Matters". Regards, Henk-Jan van Tuyl [0] http://www.cse.chalmers.se/~rjmh/Papers/whyfp.pdf -- Folding@home What if you could share your unused computer power to help find a cure? In just 5 minutes you can join the world's biggest networked computer and get us closer sooner. Watch the video. http://folding.stanford.edu/ http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --