Chandra Patni cpatni

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

C/C++ Pointer Declaration Syntax – It makes sense!

I never really liked the way pointers are declared in C/C++:

int *a, *b, *c; // a, b and c are pointers to int

The reason is that I am used to reading variable declarations as MyType myVar1, myVar2, myVar3; and I always read “int*” as the type “integer pointer”�. I therefore wanted the following

int* a, b, c; // a is a pointer to int, b and c are ints

	# -- coding: utf-8 --
	"""
	Builds epub book out of Paul Graham's essays: http://paulgraham.com/articles.html

	Author: Ola Sitarska <[email protected]>
	Copyright: Licensed under the GPL-3 (http://www.gnu.org/licenses/gpl-3.0.html)

	This script requires python-epub-library: http://code.google.com/p/python-epub-builder/
	"""

	#!/usr/bin/env sh

	##
	# This is script with usefull tips taken from:
	# https://github.com/mathiasbynens/dotfiles/blob/master/.osx
	#
	# install it:
	# curl -sL https://raw.github.com/gist/2108403/hack.sh \| sh
	#

	class PostsController < ActionController::Base
	def create
	Post.create(post_params)
	end

	def update
	Post.find(params[:id]).update_attributes!(post_params)
	end

	private

	-- This will give us a table that has a row for each resource but includes all of the events related to the
	-- resource on the row. Calling array_agg will load all of the data in memory which means that I can do math
	-- on the set really quickly. Also, callers of this query will be able to get all of the data for the invoice
	-- in one shot.

	create view invoice as
	select
	a.resource_id,
	sum(a.qty) as qty,
	array_agg(hstore(a.*)) as events_collection

	"""
	Copyright (c) 2012 Anthony Wu, twitter.com/anthonywu

	Permission is hereby granted, free of charge, to any person obtaining
	a copy of this software and associated documentation files (the
	"Software"), to deal in the Software without restriction, including
	without limitation the rights to use, copy, modify, merge, publish,
	distribute, sublicense, and/or sell copies of the Software, and to
	permit persons to whom the Software is furnished to do so, subject to
	the following conditions:

	Stripe CTF - Work Notes
	mpetrov ([email protected])

	These notes are very rough. They should give a general idea of how each level was solved.

	---- LEVEL 01 (login: e9gx26YEb2) -----
	Solution: modifying PATH env variable
	Password: kxlVXUvzv

	date.c

	def be_guest_member_of(expected)
	Class.new do
	def initialize(expected)
	@expected = expected
	end

	def matches?(target)
	@target = target
	@target.memberships.where(role: "guest").map(&:network).include? @expected
	end