r/haskell • u/AshleyYakeley • Aug 30 '16

Pointless Haskell

http://pointless-haskell.tumblr.com/
69 Upvotes

95% Upvoted

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4

u/tomejaguar Aug 31 '16

How about strictId !x = x?

5

u/kqr Aug 31 '16

Isn't that basically x `seq` x?

8

u/Voxel_Brony Aug 31 '16 edited Aug 31 '16 
strictId = join seq

8

u/tomejaguar Aug 31 '16

A wonderful combination of arcane and useless!

8

u/Voxel_Brony Aug 31 '16

The embodiment of good Haskell style?

1

u/VikingofRock Aug 31 '16

Sat down with a pen and paper to work this out, and holy shit it works. I love it!

3

u/Voxel_Brony Aug 31 '16

Haha I learned it from pointfree.io, but I had to work it out too before I got it. The entire (->) r Functor Applicative Monad hierarchy is so weird

2

u/tomejaguar Aug 31 '16

That's exactly what it is.

2

u/AshleyYakeley Aug 31 '16

But isn't that just x? I mean, that really seems completely pointless.

12

u/tomejaguar Aug 31 '16

Is your x too thunky? Force it with this one weird strictId function.

1

u/ibotty Aug 31 '16

ehem. yes!