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 1 to 10

gregvaughn

gregvaughn

:erlang.monotonic_time

OvermindDL1

OvermindDL1 OP

Yep yep. :slight_smile:

There is still a much shorter way, without calling into :erlang too, what is it? ^.^

JEG2

JEG2

Author of Designing Elixir Systems with OTP

System.unique_integer

gregvaughn

gregvaughn

make_ref

bbense

bbense

fn x → x end

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

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. ^.^

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

Oh that is brilliant! ^.^

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.

JEG2

JEG2

Author of Designing Elixir Systems with OTP

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

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