Drew Dara-Abrams drewda

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).

Contours of San Francisco overlayed over OpenStreeMap vector tiles using code from mbostock's vector tiles with multiple layers example. View the hi-res file

See gist for code used to generate contours.

redo: Combine Several Fields into One.

A sort of continuation of GIS with Python, Shapely, and Fiona.

Combine several fields into one with Python, Shapely, and Fiona! You'll also want GDAL around.

First, let's start out with data. I'll use Natural Earth Countries 1:50m. Download that file and move it to a directory.

	// Copyright 2013 Soundslice LLC. License: BSD.

	/* HTML example: ****************

	<figure class="vid">
	<video preload>
	<source src="/videos/help/playhead.mp4" type="video/mp4">
	<source src="/videos/help/playhead.webm" type="video/webm">
	</video>
	<p>To move the playhead, click in the timeline or drag the playhead’s diamond.</p>

	Handlebars.registerHelper('equal', function(lvalue, rvalue, options) {
	if (arguments.length < 3)
	throw new Error("Handlebars Helper equal needs 2 parameters");
	if( lvalue!=rvalue ) {
	return options.inverse(this);
	} else {
	return options.fn(this);
	}
	});

	$(function(){
	var tokenValue = $("meta[name='csrf-token']").attr('content');

	$.ajaxSetup({
	headers: {'X-CSRF-Token': tokenValue}
	});
	})

	#!/bin/bash
	#
	# Removes the Bing logo from Satellite Eyes wallpapers
	#

	# Delete the Bing logo image
	rm -f /Applications/Satellite\ Eyes.app/Contents/Resources/bing-logo.png

	# Clear the map cache
	rm -f ~/Library/Application\ Support/Satellite\ Eyes/map-*.png

	rds-modify-db-parameter-group {param-group-name} \
	--parameters="name=character_set_server, value=utf8, method=pending-reboot" \
	--parameters="name=collation_server, value=utf8_general_ci, method=pending-reboot" \
	--parameters="name=tmp_table_size, value={DBInstanceClassMemory/16}, method=pending-reboot" \
	--parameters="name=max_heap_table_size, value={DBInstanceClassMemory/16}, method=pending-reboot" \
	--parameters="name=query_cache_type, value=1, method=pending-reboot" \
	--parameters="name=query_cache_size, value=131072, method=pending-reboot" \
	--parameters="name=table_open_cache, value=2500, method=pending-reboot" \
	--parameters="name=join_buffer_size, value={DBInstanceClassMemory/64}, method=pending-reboot" \
	--parameters="name=thread_cache_size, value={DBInstanceClassMemory/12582880}, method=pending-reboot" \

	// underscore addon with sum, mean, median and nrange function
	// see details below

	_.mixin({

	// Return sum of the elements
	sum : function(obj, iterator, context) {
	if (!iterator && _.isEmpty(obj)) return 0;
	var result = 0;
	if (!iterator && _.isArray(obj)){

	class BootstrapFormBuilder < ActionView::Helpers::FormBuilder

	delegate :capture, :content_tag, :tag, to: :@template

	%w[text_field text_area password_field collection_select].each do \|method_name\|
	define_method(method_name) do \|name, *args\|
	errors = object.errors[name].any?? " error" : ""
	error_msg = object.errors[name].any?? content_tag(:span, object.errors[name].join(","), class: "help-inline") : ""

	content_tag :div, class: "clearfix#{errors}" do