ghoseb

;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix
;;  and optionally can refer functions to the current ns.
;;
;; * :import refers Java classes to the current namespace.
;;
;; * :refer-clojure affects availability of built-in (clojure.core)
;;   functions.

puffnfresh

macro $do {
    case { $y:expr } => {
        $y
    }
    case { $x:ident <- $y:expr $rest ... } => { 
        λ['>=']($y, function($x) {
            return $do { $rest ... }
        });
    }
}

rubencaro

Elixir installation guide

Version numbers should be the ones you want. Here I do it with the last ones available at the moment of writing.

The simplest way to install elixir is using your package manager. Sadly, at the time of writing only Fedora shows the intention to keep its packages up to date. There you can simply sudo dnf install erlang elixir and you are good to go.

Anyway, if you intend to work with several versions of erlang or elixir at the same time, or you are tied to a specific version, you will need to compile it yourself. Then asdf is your best friend.

nrc

Rust developer tools - status and strategy

Availability and quality of developer tools are an important factor in the success of a programming language. C/C++ has remained dominant in the systems space in part because of the huge number of tools tailored to these lanaguages. Succesful modern languages have had excellent tool support (Java in particular, Scala, Javascript, etc.). Finally, LLVM has been successful in part because it is much easier to extend than GCC. So far, Rust has done pretty well with developer tools, we have a compiler which produces good quality code in reasonable time, good support for debug symbols which lets us leverage C++/lanaguge agnostic tools such as debuggers, profilers, etc., there are also syntax highlighting, cross-reference, code completion, and documentation tools.

In this document I want to layout what Rust tools exist and where to find them, highlight opportunities for tool developement in the short and long term, and start a discussion about where to focus our time an

rodrigopedra

<?php namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Response;

class DBTransaction
{
    /**
     * Handle an incoming request.
     *

pycdump.py

#                                                                                                                                                                                                           
# read a .pyc file and pretty-print it                                                                                                                                                                      
#                                                                                                                                                                                                           
# copied from http://nedbatchelder.com/blog/200804/the_structure_of_pyc_files.html                                                                                                                          
# and updated to Python 3.5 (Nov 10th 2015)                                                                                                                                                                 

kana-sama

(set-env!
  :source-paths #{"cljs"}
  :dependencies '[[adzerk/boot-cljs          "1.7.228-1"]
                  [adzerk/boot-reload        "0.4.12"]

                  ;; project dependencies
                  [org.clojure/clojure         "1.8.0"]
                  [org.clojure/clojurescript   "1.9.229"]
                  [reagent                     "0.6.0"
                   :exclusions [cljsjs/react

kana-sama

[Know about it][Understanding][Clear understanding]

NOVICE

CONCEPTS

• xxx Immutable Data
• xxx Second-Order Functions
• xxx Constructing & Destructuring
• xxx Function Composition
• xxx First-Class Functions & Lambdas

zerobias

import { stateShape } from '../store'

type ClientOrdersProps = {
  orders: number[],
  id: number,
}

const ClientOrders = ({ orders, id }: ClientOrdersProps) =>
  <div>
    {orders.map( order => <div>{order}</div> )}

kana-sama

/-
Copyright (c) 2014 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Leonardo de Moura

notation, basic datatypes and type classes
-/
prelude

notation `Prop` := Sort 0