Comparing the Same Project in Rust, Haskell, C++, Python, Scala and OCaml

Re:Comparing the Same Project in Rust, Haskell, C++, Python,... by ibejoeb on Saturday June 15, 2019 @10:32PM (#20193497)

I'm not sure what your example is illustrating. The SO question asks for the idiomatic one-liner to get the first non-null element of a list. The accepted answer does that.

    next(iter(your_list), None)

This is 100% standard library.

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Re:Comparing the Same Project in Rust, Haskell, C++, Python,... by tanin on Saturday June 15, 2019 @10:45PM (#20193542)

Maybe I should have given the comparable example in Ruby, which is `array.first`. Even Scala offers `array.headOption`. Both are more succinct than Python's.

The degree of richness and/or the height of abstraction seem lower in Python. (Not that this is a bad thing. It depends on people's taste, of course.)

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Re:Comparing the Same Project in Rust, Haskell, C++, Python,... by zmmmmm on Saturday June 15, 2019 @10:54PM (#20193565)

Python is indeed very frustrating that way. So many of its limitations and flaws are justified on the basis of clarity and then there are this array of very simple things that can only be expressed in unclear ways which every other language offers a solution for.

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Re:Comparing the Same Project in Rust, Haskell, C++, Python,... by galaxyLogic on Saturday June 15, 2019 @10:59PM (#20193582)

A comparable example from JavaScript, there is no library-method for getting the last element of an array, so it gets clumsy: myArray [myArray.length - 1]. A better standard library would provide a method for that: myArray.last(). Or maybe myArray[-1].

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Re:Comparing the Same Project in Rust, Haskell, C++, Python,... by tanin on Saturday June 15, 2019 @11:02PM (#20193588)

That's a great example. And, yes, Javascript has a similar problem.

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