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I've tried to learn Haskell a couple times, and I keep running into the basic problem of not being able to search for info on terms like ">>=". If you don't kno

I've tried to learn Haskell a couple times, and I keep running into the basic problem of not being able to search for info on terms like ">>=". If you don't know what it means, how do you find out? I certainly never knew until reading in this article that they were called "fish" operators. I previously tried to work through 3 or 4 different Haskell tutorials, and still didn't know this. This article seems very helpful for simply enabling someone with Python experience to learn Haskell.

tel 15y ago
It's also called 'bind' and should be described in any monad tutorial. Hoogle is a great reference for using Haskell and can successfully find the 'fish' operators[1]. [1]http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D
tikhonj 15y ago
They aren't actually called "fish" operators, as far as I know. ">>=" is pronounced "bind"; all the other ones are related. I didn't have this problem when learning Haskell because I just started by reading "Learn You a Haskell for Great Good"--which is a great book, coincidentally--and never had to google operators.
- ezyang 15y ago
  OK OK, "Bind and fish" operators. :-)
  - tikhonj 15y ago
    I actually rather like the name "fish operator". I just wanted to point out that Googling for that phrase wouldn't really work.
- joeyh 15y ago
  I only think of >=> as the fish operator, and it seems rarely used.
jberryman 15y ago
Two very helpful tips: 1. Look at the types of higher order functions (remember, these operators arent magical syntax, just functions) in ghci with ":t (>>=)" for instance. 2. Use hoogle to find the docs for a function, view its implementation, or search for "that one function" by type P.s. never heard that fish operator business.
gtani 15y ago
http://www.imada.sdu.dk/~rolf/Edu/DM22/F06/haskell-operatorer.pdf http://www.imada.sdu.dk/~rolf/Edu/DM22/F06/haskell-operatore... http://haskell.org/haskellwiki/Keywords http://haskell.org/haskellwiki/Keywords
tsuraan 15y ago
You want hoogle: http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D
- sinope 15y ago
  Also, an irc client. #haskell on Freenode is stuffed with cool people. You can also borrow the old trick from the Linux community. "WELL I THINK HASKELL SUCKS BECAUSE YOU CAN'T DO X AND Y!" Observe as 50 nerds stumble over each other to help you and show you why Haskell is fucking amazing.

tel 15y ago

It's also called 'bind' and should be described in any monad tutorial. Hoogle is a great reference for using Haskell and can successfully find the 'fish' operators[1]. [1]http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D

tikhonj 15y ago

They aren't actually called "fish" operators, as far as I know. ">>=" is pronounced "bind"; all the other ones are related. I didn't have this problem when learning Haskell because I just started by reading "Learn You a Haskell for Great Good"--which is a great book, coincidentally--and never had to google operators.

ezyang 15y ago
OK OK, "Bind and fish" operators. :-)
- tikhonj 15y ago
  I actually rather like the name "fish operator". I just wanted to point out that Googling for that phrase wouldn't really work.
joeyh 15y ago
I only think of >=> as the fish operator, and it seems rarely used.

jberryman 15y ago

Two very helpful tips: 1. Look at the types of higher order functions (remember, these operators arent magical syntax, just functions) in ghci with ":t (>>=)" for instance. 2. Use hoogle to find the docs for a function, view its implementation, or search for "that one function" by type P.s. never heard that fish operator business.

gtani 15y ago

http://www.imada.sdu.dk/~rolf/Edu/DM22/F06/haskell-operatorer.pdf http://www.imada.sdu.dk/~rolf/Edu/DM22/F06/haskell-operatore... http://haskell.org/haskellwiki/Keywords http://haskell.org/haskellwiki/Keywords

tsuraan 15y ago

You want hoogle: http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D http://www.haskell.org/hoogle/?hoogle=%3E%3E%3D

sinope 15y ago
Also, an irc client. #haskell on Freenode is stuffed with cool people. You can also borrow the old trick from the Linux community. "WELL I THINK HASKELL SUCKS BECAUSE YOU CAN'T DO X AND Y!" Observe as 50 nerds stumble over each other to help you and show you why Haskell is fucking amazing.