oncomouse

import React from 'react';
import styled from '@emotion/styled';
import { css } from '@emotion/core';
import { CSSTransition } from 'react-transition-group';

const has = (key, obj) => Object.prototype.hasOwnProperty.call(obj, key);

const keyframes = [
  'appear',
  'enter',

camerondavison

{
  "presets": [
    "@babel/preset-env",
  ]
}

jakevdp

bearfrieze

Comprehensions in Python the Jedi way

by Bjørn Friese

Beautiful is better than ugly. Explicit is better than implicit.

-- The Zen of Python

I frequently deal with collections of things in the programs I write. Collections of droids, jedis, planets, lightsabers, starfighters, etc. When programming in Python, these collections of things are usually represented as lists, sets and dictionaries. Oftentimes, what I want to do with collections is to transform them in various ways. Comprehensions is a powerful syntax for doing just that. I use them extensively, and it's one of the things that keep me coming back to Python. Let me show you a few examples of the incredible usefulness of comprehensions.

alanhamlett

-e git://github.com/kennethreitz/inbox.py.git@551b4f44b144564504c687cebdb4c543cb8e9adf#egg=inbox

alembic==0.8.3
amqp==1.4.9
anyjson==0.3.3
boto==2.39.0
braintree==3.20.0
cairosvg==1.0.19
celery==3.1.20

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

paulirish

/* bling.js */

window.$ = document.querySelectorAll.bind(document);

Node.prototype.on = window.on = function (name, fn) {
  this.addEventListener(name, fn);
}

NodeList.prototype.__proto__ = Array.prototype;

geekhunger

...

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...

lttlrck

git branch -m old_branch new_branch         # Rename branch locally    
git push origin :old_branch                 # Delete the old branch    
git push --set-upstream origin new_branch   # Push the new branch, set local branch to track the new remote

alextucker

Deploying Django on Dokku

This Gist: http://is.gd/dokkudjango

DigitalOcean: https://www.digitalocean.com/

Dokku: https://github.com/progrium/dokku

Dokku-Postgres: https://github.com/Kloadut/dokku-pg-plugin