banacorn

-- This exercise covers the first 6 chapters of "Learn You a Haskell for Great Good!"

-- Chapter 1 - http://learnyouahaskell.com/introduction
-- Chapter 2 - http://learnyouahaskell.com/starting-out
-- Chapter 3 - http://learnyouahaskell.com/types-and-typeclasses
-- Chapter 4 - http://learnyouahaskell.com/syntax-in-functions
-- Chapter 5 - http://learnyouahaskell.com/recursion
-- Chapter 6 - http://learnyouahaskell.com/higher-order-functions

-- Download this file and then type ":l Chapter-1-6.hs" in GHCi to load this exercise

stoichammer

Bitcoin user-friendly identity, the paymail protocol and beyond!

The article spans across multiple areas, the agenda outline is below:

• Philosophical underpinnings of online identity. High level view of the evolution of digital identity centralized → federated → self-sovereign (user autonomy).
• A critique of the paymail protocol, its strengths and limitations
• Establish the need for a new naming protocol suite with a fundamental focus on user autonomy.
• An attempt to present dispassionate arguments without social bias

YumaInaura

Vim — What is the name of "q and colon" mode? ( A. command line window )

Or named "command window".

I mean "q and colon" ( q: ).

Not "colon and q" means quit vim ( :q ).

davidchambers

Challenge

Write a function of type String -> Integer. The input may or may not be a valid JSON string. If it is valid, the resulting JavaScript value is expected to be an object, but may not be. If it is an object, it is expected to have a foo property whose value is expected to be an object, but may not be. This value is expected to have a bar property which is expected to be an object with a baz property whose value is expected to be an array of strings. Each of these strings is expected to be a hex representation of an integer (e.g. 0xFF). If every element of the array meets this expectation, the

mihow

if [ ! -f .env ]
then
  export $(cat .env | xargs)
fi

dypsilon

/**
 * This short program will encrypt the user password
 * and insert a new record into a mock database.
 */
const Reader = require('fantasy-readers');
const R = require('ramda');
const crypto = require('crypto');

// our mock database
const database = [

markwithers

import {StateT} from "fantasy-states"
import {Future} from "ramda-fantasy"
import {compose, composeK, merge, always} from "ramda"

// Make a new monad from Future and StateT (State Transformer)
const StateF = StateT(Future)
const {get, modify} = StateF

const babies = [
  {id: 2, name: "Alice", sex: "F"},

brennanMKE

import * as mongoose from 'mongoose';

export let Schema = mongoose.Schema;
export let ObjectId = mongoose.Schema.Types.ObjectId;
export let Mixed = mongoose.Schema.Types.Mixed;

export interface IHeroModel extends mongoose.Document {
  name: string;
  power: string;

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

Avaq

const I  = x => x
const K  = x => y => x
const A  = f => x => f (x)
const T  = x => f => f (x)
const W  = f => x => f (x) (x)
const C  = f => y => x => f (x) (y)
const B  = f => g => x => f (g (x))
const S  = f => g => x => f (x) (g (x))
const S_ = f => g => x => f (g (x)) (x)
const S2 = f => g => h => x => f (g (x)) (h (x))