btbytes

This is my recommended path for learning Haskell.

Something to keep in mind: don't sweat the stuff you don't understand immediately. Just keep moving.

Primary course

http://www.seas.upenn.edu/~cis194/lectures.html Brent Yorgey's course is the best I've found so far and replaces both Yann Esposito's HF&H and the NICTA course. This course is particularly valuable as it will not only equip you to write Haskell but also help you understand parser combinators.

Exercises for practice

margnus1

Current Syntax

Existing map specification syntax, as was introduced in 17.0, allows the following different syntaxes:

• map() or #{}: the type of any map (of any size).

• #{a => integer(), b => list()}

A map that may only contain keys a and b. If it contains a key a, then it must be mapped to an integer value. Analogously for b.

kostis

Current Syntax

Existing map specification syntax, as was introduced in 17.0, allows the following different syntaxes:

• map() or #{}: the type of any map (of any size).

• #{a => integer(), b => list()}

A map that may only contain keys a and b. If it contains a key a, then it must be mapped to an integer value. Analogously for b.

HernanRivasAcosta

-module(pt).
-export([parse_transform/2]).
 
parse_transform(ASTIn, _Options) ->
  format(ASTIn).
 
format({call, Line, {atom, _, FName}, FixedArgs} = Call) ->
  case handle_partial_application(FName, Line) of
    undefined ->
      format_tuple(Call);

Gankra

struct List<T> {
    head: Option<Box<Node<T>>>
}

struct Node<T> {
    elem: T,
    next: Option<Box<Node<T>>>,
}

impl<T> List<T> {

highlyunavailable

-module(mod_admin_cluster).
-author('highlyunavailable@gmail.com').

-behaviour(gen_mod).

-export([
         join_cluster_as_master/1,
         join_cluster/1,
         leave_cluster/0,
         leave_cluster/1,

nebuta

-- Type PureScript code here and click 'Compile' ...
-- 
-- Or select an example from the list at the top right of the page

module Main where

foreign import reverse "function reverse(s) { return function() { return s.split('').reverse().join(''); }; }" :: String -> String

a :: String
a = reverse "Hello"

paulrouget

Document moved to: https://github.com/servo/servo/blob/master/HACKING_QUICKSTART.md

jfarcand

Migrating to OS X Mavericks breaks the ngrep utility. Doing:

sudo ngrep -d lo0 -q -W byline port 8080

stopped working where the process exits immediately. I didn't dig into the ngrep code, but was able to find a simple workaround by doing

sudo ngrep -q -W byline -d lo0 '' 'port 8080'

You can call that a lazy hack, but it work!

arkgil

-module(task).

-export([async/1, async/3]).
-export([await/1, await/2, await/3]).

-opaque t() :: #{tpid := pid(), tref := reference()}.
-type await_opts() :: [kill].

-export_type([t/0]).
-export_type([await_opts/0]).