Carl carld

Clojure Destructuring Tutorial and Cheat Sheet

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors

A lot of these are outright stolen from Edward O'Campo-Gooding's list of questions. I really like his list.

I'm having some trouble paring this down to a manageable list of questions -- I realistically want to know all of these things before starting to work at a company, but it's a lot to ask all at once. My current game plan is to pick 6 before an interview and ask those.

I'd love comments and suggestions about any of these.

I've found questions like "do you have smart people? Can I learn a lot at your company?" to be basically totally useless -- everybody will say "yeah, definitely!" and it's hard to learn anything from them. So I'm trying to make all of these questions pretty concrete -- if a team doesn't have an issue tracker, they don't have an issue tracker.

I'm also mostly not asking about principles, but the way things are -- not "do you think code review is important?", but "Does all code get reviewed?".

	require 'base64'
	require 'cgi'

	def show_session(cookie)
	Marshal.load(Base64.decode64(CGI.unescape(cookie.split("\n").join).split('--').first))
	end

	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...

	BEGIN {
	int visited[node_t];

	int visit(node_t n, edge_t e) {
	if (visited[n] == 0) {
	visited[n] = 1;

	for (e = fstin(n); e; e = nxtin(e)) {
	visit(e.tail, NULL);
	}

	;;By Jhen Kung, [email protected]
	;;app.rkt

	#lang racket(require web-server/servlet
	web-server/servlet-env
	"router.rkt")

	(serve/servlet mordor
	#:port 8080
	#:servlet-path "/"

	require 'rubygems'
	require 'pg'
	require 'eventmachine'

	module Subscriber
	def initialize(pg)
	@pg = pg
	end

	def notify_readable

	AllCops:
	RunRailsCops: true

	# Commonly used screens these days easily fit more than 80 characters.
	Metrics/LineLength:
	Max: 120

	# Too short methods lead to extraction of single-use methods, which can make
	# the code easier to read (by naming things), but can also clutter the class
	Metrics/MethodLength:

	require "rspec/autorun"

	class Enumerator::Lazy
	def reduce(*)
	Lazy.new([nil]) do \|yielder, _\|
	yielder << super
	end
	end

	def join(separator="")