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angular.module('caco.feed.filter', [])
    .filter('sumByKey', function() {
        return function(data, key) {
            if (typeof(data) === 'undefined' || typeof(key) === 'undefined') {
                return 0;
            }

            var sum = 0;
            for (var i = data.length - 1; i >= 0; i--) {
                sum += parseInt(data[i][key]);

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.service( 'HardwareBackButtonManager', function($ionicPlatform){
  this.deregister = undefined;

  this.disable = function(){
    this.deregister = $ionicPlatform.registerBackButtonAction(function(e){
	e.preventDefault();
	return false;
    }, 101);
  }

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Testing an Angular $resource factory

This is an example of how to test an Angular Resource created with $resource.

Live Demo

Important take aways:

• Do not mock $resource. Instead, you can use the resource's methods and assert that it is making the right API call. By doing that you can later change the implementation (for example for replace $resource for Angular Cached Resource) without needing toi go change all previous tests.
• When intercepting the response of a custom method, do not transform the response string into json yourself. When you use the transformResponse action property of a $resource, you replace the default angular parser that is transforming backend response from string to JSON. It has some logic to ensure that the response is a JSON and can be parsed securely. You can use it by injecting $http into your factory and using `$http.defaults.transformRespon

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{
	"autocomplete": true,
	"autoimport": true,
	"enable_auto_align": false,
	"format_on_save": true,
	"ignore": "Parent",
	"indent_with_space": 4,
	"passes":
	[
		"ReindentSwitchBlocks",

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# Put this at <yourapp>/management/commands/runserver.py.

# Override the value of the constant coded into django...
import django.core.management.commands.runserver as runserver
runserver.DEFAULT_ADDR="0.0.0.0"
runserver.DEFAULT_PORT="8080"

# ...and then just import its standard Command class.
# Then manage.py runserver behaves normally in all other regards.
from django.core.management.commands.runserver import Command

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from functools import wraps
from flask import Flask, g, session, request, abort, jsonify
from flask_migrate import MigrateCommand, Migrate
from flask_script import Manager
from flask_sqlalchemy import SQLAlchemy


flask_app = Flask(__name__, static_folder='./static')
db = SQLAlchemy()
migrate = Migrate()

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import { Injectable, Inject } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { ReplaySubject } from 'rxjs/ReplaySubject';

import { DOCUMENT } from '@angular/platform-browser';

@Injectable()
export class LazylibsService {
  private chartJs?: ReplaySubject<any>;

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import { Directive, ElementRef, OnDestroy, OnInit, Renderer2 } from '@angular/core';

@Directive({
  selector: '[iframeResize]',
})
export class IframeResizeDirective implements OnInit, OnDestroy {
  private listener: () => void;
  private observer: MutationObserver;

  get element() {

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const { promisify } = require('util');
const { resolve } = require('path');
const fs = require('fs');
const readdir = promisify(fs.readdir);
const rename = promisify(fs.rename);
const stat = promisify(fs.stat);

async function getFiles(dir) {
  const subdirs = await readdir(dir);
  const files = await Promise.all(subdirs.map(async (subdir) => {

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm