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by lewtds 1102 days ago
Certain logic programming languages like SWI-Prolog [0] and Picat [1] have this built-in.

[0]: https://www.swi-prolog.org/pldoc/man?section=tabling-memoize [1]: http://retina.inf.ufsc.br/picat_guide/#x1-210001.5
1 comments
thesz 1102 days ago
That's main Haskell strength: there often is a library in Haskell for what is language feature in other languages.
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cubefox 1102 days ago
Not sure this is a strength, it sounds like Java.
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thesz 1102 days ago
Yes, it is a strength.

You may want a new control operator. In case of, say, Java, you go and ask language developers. In case of Haskell, you write a function or a bunch of functions. "if-then-else" can be implemented in Haskell as a function, for one example. Myself, I created a lot of these control operators when I worked with Haskell. I also used a lot of operators defined by others.

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cubefox 1102 days ago
This is cool, but in practice there are restrictions on syntax and grammar which limit what you can do compared to native "syntactic sugar".
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EdwardDiego 1102 days ago
Could well be a strength of Java ;)
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