jagbolanos

--Proposed solutions to problems 87,88 and 89 of "99 Haskell Problems"
--Not optimal but they work
--If you know haskell and want to solve some problems there are some missing at:
--http://www.haskell.org/haskellwiki/99_questions/80_to_89

import Data.List

type Node = Int
type Edge = (Node,Node)
type Graph = ([Node],[Edge])

TooTallNate

*
!*.m
!Makefile

simonmichael

# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.                                                                                                                                     
# ghc-pkg-clean -f cabal/dev/packages*.conf also works.                                                                                                                                                                                     
function ghc-pkg-clean() {
    for p in `ghc-pkg check $* 2>&1  | grep problems | awk '{print $6}' | sed -e 's/:$//'`
    do
        echo unregistering $p; ghc-pkg $* unregister $p
    done
}

# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.                                                                                                                                                     

mikeyk

#! /usr/bin/env python

import redis
import random
import pylibmc
import sys

r = redis.Redis(host = 'localhost', port = 6389)
mc = pylibmc.Client(['localhost:11222'])

joefiorini

class Stripe.TokenRequest extends Backbone.Model
  validate: (attrs)->
    error =
      if !attrs.name
        attribute: "name"
        message: "Please enter your name"
      else if !attrs.email
        attribute: "email"
        message: "Invalid email"
      else if !Stripe.validateCardNumber(attrs.number)

jimbojsb

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

kowey

Notes

• on lion (and snow leopard i suppose), make sure you are using a 64 bit install of ghc. Also, unless you are suggesting an edit to these directions, please go ask people on the relevant mailing list or wiki for help :)
• Tested on ghc 7.2.2, assumes you have standard developer things installed on mac, like x11 and stuff
• Also tested on GHC 7.0.4 (Haskell Platform) with XCode 4.3.
• These notes were originally brought to you by Carter Schonwald; the “I” probably refers to him. Eric Kow will refer to himself in the third person).

GHC 7.4.x

• gtk2hs 0.12.2 won't build with ghc 7.4.1, but the current darcs repo for gtk2hs does build

ahammar

{-# LANGUAGE RebindableSyntax #-}

import Prelude

data Height = Tall | Short

class IfThenElse b where
  ifThenElse :: b -> a -> a -> a

instance IfThenElse Bool where

mikehaertl

Learn you a Haskell - In a nutshell

This is a summary of the "Learn You A Haskell" online book under http://learnyouahaskell.com/chapters.

---

1. Introduction

• Haskell is a functional programming language.

mnzk

file = [header CRLF] record (CRLF record)* [CRLF]
header = name (COMMA name)*
record = field (COMMA field)*
name = field
field = (escaped | non-escaped)
escaped = DQUOTE (TEXTDATA | COMMA | CR | LF | 2DQUOTE)* DQUOTE
2DQUOTE = DQUOTE DQUOTE
non-escaped = TEXTDATA*
COMMA = '\u002C'
CR = '\u000D'