Patrick O'Leary pao

Note

strpack.jl is deprecated. Use the StrPack package or Julia's native C struct interop instead, depending on your needs.

Using strpack.jl as an FFI

This gist demonstrates calling C code which expects a structure pointer by writing and reading a buffer using the functions provided by strpack.jl. This takes advantage of the new align_native alignment strategy, which queries libLLVM for the platform-preferred alignment of the standard bits types.

Build the shared library

Now being developed at https://github.com/pao/Monads.jl and available from Pkg as "Monads".

Full documentation is available at https://monadsjl.rtfd.org/.

module Monads

# types
export Monad, Identity, MList, Maybe, State
# combinators

Contributing

We welcome contributions to Julia and appreciate your interest. There are capabilities to grow, interfaces to write, and bugs to squish. Area experts may contribute by writing software that supports work in their own field. To keep things percolating as smoothly as possible, we ask that you follow the advice and guidelines given here.

ready, get set

Before contributing to Julia, you should join the dev list, read the user manual and library guide, and create a free GitHub account. Follow these steps to get Julia copied to your machine in a way that lets you to work locally, rewind your edits, keep a remote backup, and safely contribute to Julia.

Join the dev list

Now being developed at https://github.com/pao/QuickCheck.jl and available via Pkg as "QuickCheck".

Package documentation is at https://quickcheckjl.rtfd.org/.

# A Julia implementation of QuickCheck, a randomized specification-based tester
#
# QuickCheck was originally written for Haskell by Koen Claessen and John Hughes
# http://www.cse.chalmers.se/~rjmh/QuickCheck/

Code Patterns in Julia

Climbing the type hierarchy

The base library of Julia contains a method which finds the element type of an array. This dispatch is fine for instances of AbstractArray or any of its children.

eltype{T,n}(::AbstractArray{T,n}) = T

	load("interface.jl")

	type Blah; end
	type Bluh; end

	@interface FooBar{T} [
	(:foo, :(T, Integer,))
	(:bar, :(T, String, Integer))
	]

	macro ccallWrap(lib, fnSym, retType, argTypes)
	args = [gensym() for i in 1:length(argTypes.args)]
	fnArgs = [:($(args[i])::$(argTypes[i]))
	for i in 1:length(argTypes)]

	:(($fnSym)($fnArgs...) = ccall(dlsym($lib, $fnSym), $retType, $argTypes, $args...))
	end

	(dumbirc) PS C:\Users\patrick\dumbirc\src> python ..\Scripts\twistd.py -noy dumbirc.tac
	2013-12-21 11:46:39-0600 [-] Log opened.
	2013-12-21 11:46:39-0600 [-] twistd 13.2.0 (C:\Users\patrick\dumbirc\Scripts\python.exe 2.7.3) starting up.
	2013-12-21 11:46:39-0600 [-] reactor class: twisted.internet.selectreactor.SelectReactor.
	2013-12-21 11:46:39-0600 [-] Starting factory <dumbbot.DumbIRCFactory instance at 0x02C8C4E0>
	2013-12-21 11:46:39-0600 [-] Starting factory <dumbbot.DumbIRCFactory instance at 0x02D29350>
	2013-12-21 11:46:39-0600 [-] Starting factory <dumbbot.DumbIRCFactory instance at 0x02D293A0>
	2013-12-21 11:46:39-0600 [Uninitialized] connectionMade
	2013-12-21 11:46:39-0600 [Uninitialized] connectionMade
	2013-12-21 11:46:39-0600 [DumbBot,client] signed on; joining channel #desertbus

	---- Minecraft Crash Report ----
	// You're mean.

	Time: 5/16/14 10:11 PM
	Description: Exception ticking world

	java.lang.NoSuchMethodError: exaliquo.bridges.Mariculture.SkyFish.SkyFishDamsel.getRodNeeded()Lmariculture/api/fishery/EnumRodQuality;
	at exaliquo.bridges.Mariculture.SkyFish.SkyFishDamsel.canCatch(SkyFishDamsel.java:30)
	at mariculture.fishery.LootHandler.getFishForLocation(LootHandler.java:119)
	at mariculture.fishery.LootHandler.getLoot(LootHandler.java:91)