PJUllrich

Big-O Time Complexities for Elixir data structures

Map [1]

Operation	Time Complexity
Access	O(log n)
Search	O(log n)
Insertion	O(n) for <= 32 elements, O(log n) for > 32 elements [2]
Deletion	O(n) for <= 32 elements, O(log n) for > 32 elements

LostKobrakai

defmodule DateTimeGenerators do
  use ExUnitProperties

  @time_zones ["Etc/UTC"]

  def date do
    gen all year <- integer(1970..2050),
            month <- integer(1..12),
            day <- integer(1..31),
            match?({:ok, _}, Date.from_erl({year, month, day})) do

iamvery

ANSWERED!

Since a local variable head is defined in the quoted expression, the recursive call to the function overwrites the value of head in the expanded expression. This isn't a problem when quoting in the tail of the list , because head was already used to build as its head. :mindblown:

Here's the final implementation of recurse/1:

def recurse([h|t]) do
  t = recurse(t)
  quote do

dogweather

# `Hash#dig!`
#
# Like Ruby 2.3's `Hash#dig`, but raises an exception instead of returning `nil` 
# when a key isn't found.
#
# Ruby 2.3 introduces the new Hash#dig method for safe extraction of
# a nested value. See http://ruby-doc.org/core-2.3.0/Hash.html#method-i-dig.
# It is the equivalent of a safely repeated Hash#[].
#
# `#dig!`, on the other hand, is the equivalent of a repeated `Hash#fetch`. It's 

trestrantham

defmodule MyApp.Periodically do
  use GenServer

  def start_link do
    GenServer.start_link(__MODULE__, %{})
  end

  def init(state) do
    Process.send_after(self(), :work, 2 * 60 * 60 * 1000) # In 2 hours
    {:ok, state}

ftrain

;; This is at: https://gist.github.com/8655399

;; So we want a rhyming dictionary in Clojure. Jack Rusher put up
;; this code here:
;; 
;; https://gist.github.com/jackrusher/8640437
;;
;; I'm going to study this code and learn as I go.
;;
;; First I put it in a namespace.

christhekeele

Allowable

A micro-gem DSL for compound conditionals.

Allowable lets you decompose large/long conditional chains into readable, testable, and inspectable segments with Ruby blocks.

Installation

tenderlove

require 'fiddle'

module IAmAHorriblePerson
  def unset flag
    value = _wrap self
    flags = 8.times.map { |i| value[i] }.pack('C8').unpack('Q').first
    [flags & ~flag].pack('Q').unpack('C8').each_with_index { |n,i|value[i] = n }
  end

  def class= k

adamhunter

# spec/dummy/config/application.rb
ENV['BUNDLE_GEMFILE'] = File.expand_path('../../../../Gemfile', __FILE__)

require 'rubygems'
require 'bundler'

Bundler.setup

$:.unshift File.expand_path('../../../../lib', __FILE__)

gnarf

Install

Either copy the aliases from the .gitconfig or run the commands in add-pr-alias.sh

Usage

Easily checkout local copies of pull requests from remotes:

• git pr 4 - creates local branch pr/4 from the github upstream(if it exists) or origin remote and checks it out
• git pr 4 someremote - creates local branch pr/4 from someremote remote and checks it out