adieuadieu

const fs = require('fs')
const DynamoDB = require('aws-sdk/clients/dynamodb')
const yaml = require('js-yaml')
const cloudformationSchema = require('@serverless/utils/cloudformation-schema')

const SERVERLESS_CONFIG = __dirname + '/serverless.yml'

const ddb = new DynamoDB({
  accessKeyId: 'fake-key',
  endpoint: 'http://localhost:8001',

herrkessler

const axios = require('axios');

const locations = ['London', 'San Francisco', 'Tokyo', 'Berlin'];
const apiURL = 'http://api.openweathermap.org/data/2.5/weather';
const token = 'xxxxx';

const logPosts = async () => {
  try {
    let allLocations = locations.map(town => axios(`${apiURL}?q=${town}&APPID=${token}`));
    let weather = await Promise.all(allLocations);

SheldonWangRJT

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

paulirish

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

yuval-a

NOTE: This document is OLD - and most of the tips here are probably outdated, since newer versions of Javascript have been
released over the years - with newer optimizations and more emphasis on optimizing newly supported syntax.


// Array literal (= []) is faster than Array constructor (new Array())
// http://jsperf.com/new-array-vs-literal/15
var array = [];

// Object literal (={}) is faster than Object constructor (new Object())
// http://jsperf.com/new-array-vs-literal/26

VinGarcia

// List all files in a directory in Node.js recursively in a synchronous fashion
var walkSync = function(dir, filelist) {

  if( dir[dir.length-1] != '/') dir=dir.concat('/')

  var fs = fs || require('fs'),
      files = fs.readdirSync(dir);
  filelist = filelist || [];
  files.forEach(function(file) {
    if (fs.statSync(dir + file).isDirectory()) {

marcusgadbem

/* app/controllers/index.js */

module.exports.index = function(req, res) {
    res.render('index.html');
};

klaytonfaria

dust.scopes = {};

dust.helpers.addToScope = function(chunk, context, bodies, params) {
  return chunk.capture(bodies.block, context, function(out, chunk) {
    var parts = params.key.split("."), 
         scopeKey = parts[0], 
         key = parts[1], 
         scope = dust.scopes[scopeKey] || {};

    scope[key] = out;

mobilemind

# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName

l15n

# Credit http://stackoverflow.com/a/2514279
for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ai %ar by %an" $branch | head -n 1` \\t$branch; done | sort -r