paulkoerbitz

data Lit = Lit Int
data Add l r = Add l r

class Eval x where
  eval :: x -> Int

instance Eval Lit where
  eval (Lit x) = x

instance (Eval l, Eval r) => Eval (Add l r) where

rahulmutt

#!/usr/bin/env stack
{- stack
     --resolver lts-6.27
     --install-ghc
     runghc
     --package containers
-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE DataKinds #-}

amazedsaint

using System;
using System.Linq;
using Roslyn.Compilers.CSharp;

namespace RoslynApp
{

    public static class SyntaxTreeExtensions
    {
        public static void Dump(this SyntaxTree tree)

garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

strezh

#!/bin/bash

# play YUV444 FULL HD file 
gst-launch-1.0 -v filesrc location=size_1920x1080.yuv ! \
    videoparse width=1920 height=1080 framerate=25/1 format=GST_VIDEO_FORMAT_Y444 ! \
    videoconvert ! \
    autovideosink

# play YUV422 FULL HD file 
gst-launch-1.0 -v filesrc location=size_1920x1080.yuv ! \

swlaschin

// General hints on defining types with constraints or invariants
// 
// Just as in C#, use a private constructor 
// and expose "factory" methods that enforce the constraints
//
// In F#, only classes can have private constructors with public members. 
//
// If you want to use the record and DU types, the whole type becomes
// private, which means that you also need to provide:
// * a constructor function ("create").

001101

CREATE TABLE accounts(
	id serial PRIMARY KEY,
	name VARCHAR(256) NOT NULL
);

CREATE TABLE entries(
	id serial PRIMARY KEY,
	description VARCHAR(1024) NOT NULL,
	amount NUMERIC(20, 2) NOT NULL CHECK (amount > 0.0),
	-- Every entry is a credit to one account...

paragonie-scott

Hello software developers,

Please check your code to ensure you're not making one of the following mistakes related to cryptography.

I. General Mistakes

• Writing your own home-grown cryptography primitives (For example: Mifare Classic)
  • Exception: For the sake of learning, but don't deploy it in production.
• Using a fast hash function (e.g. MD5, SHA256) for storing passwords. Use bcrypt instead.
• Not using a cryptographically secure random number generator

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

hofmannsven

Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!