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	# Goals:
	# - Setup django with virtual environment so can lint correctly in VScode

	# Steps:
	# Using venv instead of virtualenv
	# Install package, run server in VSCode's python terminal
	# Enable django for pylint, add to VSCode's setting: "python.linting.pylintArgs": ["--load-plugins", "pylint_django"]

	# References
	# - https://github.com/Microsoft/vscode-python/issues/1185

	# Create a virtual environment for a project:
	cd repos
	virtualenv project1

	# To begin using the virtual environment, it needs to be activated:
	source project1/bin/activate

	# From now on, any package that you install using pip will be placed in the project1 folder,
	# isolated from the global Python installation.
	# Install packages as usual, for example:

	# Install homebrew, check https://brew.sh/#install

	# Install python3 with homebrew
	brew install python

	# View guide to link python to python3
	brew info python

	# From the guide, link python to python3 by adding /usr/local/opt/python/libexec/bin to PATH in
	vi ~/.zshrc

	// cloud function
	import {type1} from `../../feature1`; //relative import

	// angular
	import {type1} from `@app/shared/feature1`

	// angular's tsconfig.json
	{
	"compilerOptions": {
	"paths": {

	// cloud function
	import {type1} from `@app/shared/feature1`

	// angular
	import {type1} from `@app/shared/feature1`

	// angular's tsconfig.json
	{
	"compilerOptions": {
	"paths": {

	// rxjs 5.4, ngrx 4.0.0, angular 4.0.0
	import {Injectable} from '@angular/core';

	@Injectable()
	export class Task1Effects {
	@Effect() task1$: Observable<Action> = this.actions$
	.ofType('TASK1')
	.switchMap((action: Action1) =>
	this.service1.doSomething(action.param1)
	.map((result) => new Action1Success(result))

	// rxjs 5.4
	// angularfire2-4.0.0-rc.1

	import { Injectable } from '@angular/core';
	import { AngularFireDatabase } from 'angularfire2/database';

	import 'rxjs/add/observable/combineLatest';
	import {Observable} from 'rxjs/Observable';

	@Injectable()

	// WORKS
	// firebase API - with once('value')
	firebase().database().ref('/dinosaurs').orderByChild('height').once('value', function (snapshot) {
	snapshot.forEach(function(child) {
	console.log(child.val())
	});
	});
	// firebase API - with once('child_added')
	firebase().database().ref('/dinosaurs').orderByChild('height').once('child_added', function (snapshot) {
	console.log(snapshot.val());