OvermindDL1

OvermindDL1

I’m curious if anyone would be interesting in giving and trying an occasional coding challenge (perhaps a new tag or category could be made if it gets popular). These would not be ones like Exercism has or so, but strictly challenges to try to solve language-specific tasks that you may never run across in real-life. Let’s do a simple task as an example:

Force non-equality - runtime

Given this code:

defmodule Testing do
  def f() do
    # Put 1-expression
  end

  def test() do
    false = ( f() == f() )
    true
  end
end

Fill in the # Put 1-expression here with code to make the test pass where calling Testing.test() returns true.

Showing Posts 14 to 5

OvermindDL1

OvermindDL1 OP

True, just recently I added ocaml and rust to an Elixir Ports benchmark on a github repo recently. I like the test to see how things go. ^.^

GustavoCaso

GustavoCaso

It would be great to have a place with language specific challenges, so every one can collaborate.

Qqwy

Qqwy

TypeCheck Core Team

The weird thing about anonymous functions, is that each definition creates a new anonymous function object. But if you assign an anonymous function to a variable, or compile a module that contains it in one of its functions, then this will only create one anonymous function object, and so it will be equal to itself.

OvermindDL1

OvermindDL1 OP

Lol, yes, yes you can indeed do impure in Elixir. :wink:

I like to give myself little challenges like this, then try to see how many ways I can come up with to both code-golf it and break the language. ^.^

JEG2

JEG2

Author of Designing Elixir Systems with OTP

This code challenge is making me have impure thoughts. :laughing:

NobbZ

NobbZ

When I tried that one yesterday (OTP 19.2, Elixir 1.4.0) I got a match error, so that doesn’t work.

OvermindDL1

OvermindDL1 OP

Oh that is brilliant! ^.^

gregvaughn

gregvaughn

If we’re golfing this for the fewest characters. and don’t mind abusing syntax, I have a 4 character solution :slight_smile:

& &1

props to @bbense for the idea

OvermindDL1

OvermindDL1 OP

This was indeed the shortest that I could come up with when I posted it too. :slight_smile:

Ah, I’d not thought of that one but I’d bet it would work too!

Ditto too. :slight_smile:

There are still other simple ones too that I can think of. ^.^

bbense

bbense

fn x → x end

Not sure this isn’t more or less make_ref when all is said and done.

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