Haskell Communities and Activities Report

https://www.haskell.org/communities/05-2010/html/report.html

Admin

The Haskell Communities and Activities Report provides an overview of community activities,...

Tokens:50,206

Snippets:403

Trust Score:9.7

Update:1 week ago

Show doc for...

Tokens:

Raw

### IgorII input examples for reverse

Source: https://www.haskell.org/communities/05-2010/html/report.html

Input examples for the IgorII system describing the behavior of reverse on lists of increasing length. These non-recursive equations are used to synthesize a recursive definition.

```Haskell
reverse [] |  = |  []   
reverse [a] |  = |  [a]   
reverse [a,b] |  = |  [b,a]   
reverse [a,b,c] |  = |  [c,b,a]   

```

--------------------------------

### Install Hubris on Linux

Source: https://www.haskell.org/communities/05-2010/html/report.html

Install Hubris on Linux using Cabal and RubyGems. The two commands are run in sequence to set up the bridge between Ruby and Haskell.

```bash
cabal install hubris
```

```bash
gem install hubris
```

--------------------------------

### Get xmonad source with darcs

Source: https://www.haskell.org/communities/05-2010/html/report.html

Clone the xmonad source repository using Darcs. The URL is the official Darcs source for xmonad.

```shell
darcs get http://code.haskell.org/xmonad
```

--------------------------------

### IgorII synthesized recursive reverse with last and init

Source: https://www.haskell.org/communities/05-2010/html/report.html

Recursive definition of reverse synthesized by IgorII from the input examples. The subfunctions last and init are automatically invented by the program.

```Haskell
reverse [] |  = |  []   
reverse (x:xs) |  = |  (last (x:xs)):(reverse (init (x:xs))   
last [x] |  = |  x   
last (x:y:ys) |  = |  last (y:ys)   
init [x] |  = |  []   
init (x:y:ys) |  = |  x:(init (y:ys))  

```

Tokens:

Raw