Skip to content

Instantly share code, notes, and snippets.

View ukari's full-sized avatar
😎

ukari

😎
  • China
  • 10:28 (UTC +08:00)
View GitHub Profile

The Freenode resignation FAQ, or: "what the fuck is going on?"

IMPORTANT NOTE:

It's come to my attention that some people have been spamming issue trackers with a link to this gist. While it's a good idea to inform people of the situation in principle, please do not do this. By all means spread the word in the communities that you are a part of, after verifying that they are not aware yet, but unsolicited spam is not helpful. It will just frustrate people.

Update 3 (May 24, 2021)

A number of things have happened since the last update.

-- Based on: http://augustss.blogspot.com/2007/10/simpler-easier-in-recent-paper-simply.html
import Data.List (delete, union)
{- HLINT ignore "Eta reduce" -}
-- File mnemonics:
-- env = typing environment
-- vid = variable identifier in Bind or Var
-- br = binder variant (Lambda or Pi)
-- xyzTyp = type of xyz
-- body = body of Lambda or Pi abstraction
@jproyo
jproyo / Data.hs
Last active May 19, 2022 16:04
Tagless Final Encoding in Haskell Example
{-# LANGUAGE GeneralisedNewtypeDeriving #-}
module Data where
type UserName = String
data DataResult = DataResult String
deriving (Eq, Show)
class Monad m => Cache m where

I believe the article was originally written by fede.tft.

It appears they have copied source code to github and updated it for C++11: https://github.com/fedetft/serial-port

Introduction

The serial port protocol is one of the most long lived protocols currently in use. According to wikipedia, it has been standadized in 1969. First, a note: here we're talking about the RS232 serial protocol. This note is necessary because there are many other serial protocols, like SPI, I2C, CAN, and even USB and SATA.

Some time ago, when the Internet connections were done using a 56k modem, the serial port was the most common way of connecting a modem to a computer. Now that we have ADSL modems, the serial ports have disappeared from newer computers, but the protocol is still widely used.

In fact, most microcontrollers, even the newer ones have one or more peripherals capable of communicating using this protocol, and from the PC side, all operating system

@cdepillabout
cdepillabout / existential-vs-sigma.hs
Last active June 11, 2021 11:53
This file shows how similar existential types are vs. sigma types (dependent pairs).
{-# LANGUAGE AllowAmbiguousTypes #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE InstanceSigs #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE PolyKinds #-}
@cimfalab
cimfalab / javascript-static-analysis-tools.md
Last active November 13, 2017 03:00 — forked from listochkin/javascript-static-analysis-tools.md
JavaScript Static Analysis Tools

JavaScript Static Analysis Tools

Most people are familiar with these three tools:

  1. [JSHint][1]
  2. [JSLint][2]
  3. [Google Closure Linter][3]

The first one is more popular among developers because it is style-agnostic. The other two enforce rules of [Crockford Style][4] and [Google Code Style][5] respectively.

@sebastiaanvisser
sebastiaanvisser / walk.hs
Created August 18, 2017 12:17
AST walk
{-# LANGUAGE
DeriveFunctor
, DeriveFoldable
, DeriveTraversable
, StandaloneDeriving
, ViewPatterns
, PatternSynonyms
#-}
-- AST independent
@SaschaWillems
SaschaWillems / vk.cpp
Last active November 23, 2023 10:02
Multiple Vulkan buffer binding points
Shader
layout (location = 0) in vec3 inPos;
layout (location = 1) in vec3 inColor;
layout (location = 2) in vec3 inPosB;
layout (location = 3) in vec3 inColorB;
...
Application
@VictorTaelin
VictorTaelin / promise_monad.md
Last active May 10, 2024 04:22
async/await is just the do-notation of the Promise monad

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

@Icelandjack
Icelandjack / Constraints.org
Last active April 2, 2024 20:22
Type Classes and Constraints

Reddit discussion.

Disclaimer 1: Type classes are great but they are not the right tool for every job. Enjoy some balance and balance to your balance.

Disclaimer 2: I should tidy this up but probably won’t.

Disclaimer 3: Yeah called it, better to be realistic.

Type classes are a language of their own, this is an attempt to document features and give a name to them.