Petar Bojinov pbojinov

##Angular Directive Priority - Quick Reference

When there are multiple directives defined on a single DOM element, sometimes it is necessary to specify the order in which the directives are applied. The priority is used to sort the directives before their compile functions get called. Priority is defined as a number. Directives with greater numerical priority are compiled first. Pre-link functions are also run in priority order, but post-link functions are run in reverse order. The order of directives with the same priority is undefined. The default priority is 0.

For a brief description of each directive, click here.

Install va homebrew

If you don't have homebrew installed - get homebrew here

Then run: brew install elasticsearch

Configuration

Update the elasticsearch configuration file in /usr/local/etc/elasticsearch/elasticsearch.yml.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

What is this?

Following this guide will set up a local Elasticsearch with Kibana and Marvel using Homebrew and Homebrew Cask

Prerequisites

If you already have Java installed on your system, skip steps Install Cask and Install Java

If you already have Java and Homebrew installed on your system, skip steps Prerequisites, start at Install Elasticsearch and Kibana after running $ brew update

Install Homebrew

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Google Vision API Examples and Python utilities

Label Detection Examples

Face Detection Examples

Face Sentiments with Google Vision API via AWS API Gateway and Lambda

My notes (and rudimentary guide) from a research spike that delved into the Google Vision API, AWS API Gateway and Lambda, prototyping a "serverless" API endpoint that returns sentiments expressed by faces in an image.

Introduction

Google's been rockin' their cloud offerings hard lately. Among their latest releases is the Cloud Vision API (in beta), a service that analyzes the content of an image; detecting things like words, phrases, objects, faces and their emotions. Let's prototype a "serverless" face sentiments endpoint using only the Vision API, AWS API Gateway and a Lambda function.

A quick note on Cloud Vision API pricing. As of this writing, the free tier for face detection is <1000/mo. This app can easily exceed this limit. To give you an idea of this, so far I've used 1103 face detection operations

	# Monkey patch Decimal's default Context to allow
	# inexact and rounded representation of floats
	import decimal
	from boto.dynamodb.types import DYNAMODB_CONTEXT
	# Inhibit Inexact Exceptions
	DYNAMODB_CONTEXT.traps[decimal.Inexact] = 0
	# Inhibit Rounded Exceptions
	DYNAMODB_CONTEXT.traps[decimal.Rounded] = 0

	/**
	Squarespace essentially doesn't really document their breakpoints.
	This can be quite annoying to not have when doing custom CSS.

	Most themes use essentially one breakpoint. Mobile and not mobile; anything 750 and below is considered mobile.

	You can use these to write your own CSS and simply use the "Style Editor" to inject your compiled CSS in the event
	you are not using "Developer Mode" in your site.

	Enjoy!

	Disclaimer: The instructions are the collective efforts from a few places online.
	Nothing here is my original. But I want to put them together in one place to save people from spending the same time as I did.

	First off, bundle.
	==================

	1. cd to the project directory
	2. Start the react-native packager if not started
	3. Download the bundle to the asset folder:
	curl "http://localhost:8081/index.android.bundle?platform=android" -o "android/app/src/main/assets/index.android.bundle"

	/**
	* Lodash mixins for combinatorics
	* by: wassname & visangela
	* url: https://gist.github.com/wassname/a882ac3981c8e18d2556/edit
	* lodash contrib issue: https://github.com/node4good/lodash-contrib/issues/47
	* lic: same as lodash
	* Inspired by python itertools: https://docs.python.org/2.7/library/itertools.html
	*
	* Usage:
	* permutations([0,1,2],2) // [[0,1],[0,2],[1,0],[1,2],[2,0],[2,1]]