graninas

Haskeller Competency Matrix

See also List of materials about Software Design in Haskell

	Junior	Middle	Senior	Architect
Haskell level	Basic Haskell	Intermediate Haskell	Advanced Haskell	Language-agnostic
Haskell knowledge scope	Learn you a Haskell	Get programming with Haskell	Haskell in Depth	Knows several languages from different categories
	Get programming with Haskell	Haskell in Depth	Functional Design and Architecture
			[Other books on Software Engineering in Haskell](https://github.com/graninas/software-design-in-haskell#B

AndrasKovacs

{-# language Strict, LambdaCase, BlockArguments #-}
{-# options_ghc -Wincomplete-patterns #-}

{-
Minimal demo of "glued" evaluation in the style of Olle Fredriksson:

  https://github.com/ollef/sixty

The main idea is that during elaboration, we need different evaluation

stettix

Things I believe

This is a collection of the things I believe about software development. I have worked for years building backend and data processing systems, so read the below within that context.

Agree? Disagree? Feel free to let me know at @JanStette. See also my blog at www.janvsmachine.net.

Fundamentals

Keep it simple, stupid. You ain't gonna need it.

MattPD

C++ links: Coroutines

https://github.com/MattPD/cpplinks / C++ Standard / C++20 / Coroutines

(draft; work in progress)

#coroutines (C++ Slack): https://cpplang.slack.com/archives/C5JS5JXT5

Contents

ChrisPenner

module LispParser where
import Text.Megaparsec
import Text.Megaparsec.String
import Text.Megaparsec.Lexer  hiding (space)

data E=L[E]|S String|N Integer deriving Show
e=(char '('*>(L<$>some e)<*char ')'<|>N<$>integer<|>S<$>some letterChar)<*space::Parser E

seanjensengrey

This is a small demo of how to create a library in Rust and call it from Python (both CPython and PyPy) using the CFFI instead of ctypes.

Based on http://harkablog.com/calling-rust-from-c-and-python.html (dead) which used ctypes

CFFI is nice because:

• Reads C declarations (parses headers)
• Works in both CPython and PyPy (included with PyPy)
• Lower call overhead than ctypes

AndrasKovacs

{-# LANGUAGE LambdaCase, DeriveFunctor #-}

import Prelude hiding (pi)
import Control.Applicative
import Control.Monad
import Prelude.Extras
import Bound

data Term a
  = Var a

drgarcia1986

# !/usr/bin/env python
# -*- coding: utf-8 -*-
__author__ = 'Diego Garcia'

import tornado.web
import tornado.ioloop
import oauth2.tokengenerator
import oauth2.grant
import oauth2.store.redisdb
import oauth2.store.mongodb

chaitanyagupta

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

onemouth

/*
 * linux 2.6.37-3.x.x x86_64, ~100 LOC
 * gcc-4.6 -O2 semtex.c && ./a.out
 * 2010 sd@fucksheep.org, salut!
 *
 * update may 2013:
 * seems like centos 2.6.32 backported the perf bug, lol.
 * jewgold to 115T6jzGrVMgQ2Nt1Wnua7Ch1EuL9WXT2g if you insist.
 */