mmazzarolo

// 1. Define a state variable for showing/hiding the action-button 
state = {
  isActionButtonVisible: true
}

// 2. Define a variable that will keep track of the current scroll position
_listViewOffset = 0

// 3. Add an onScroll listener to your listview/scrollview
<ListView

brettcannon

+------------------------------------+---------------+---------------+--------------+-------------------------+
| Benchmark                          | 3.5-perf.json | 3.6-perf.json | Change       | Significance            |
+====================================+===============+===============+==============+=========================+
| 2to3                               | 0.68          | 0.62          | 1.09x faster | Significant (t=65.03)   |
+------------------------------------+---------------+---------------+--------------+-------------------------+
| call_method                        | 0.02          | 0.02          | 1.07x faster | Significant (t=46.01)   |
+------------------------------------+---------------+---------------+--------------+-------------------------+
| call_method_slots                  | 0.02          | 0.02          | 1.06x faster | Significant (t=29.45)   |
+------------------------------------+---------------+---------------+--------------+-------------------------+
| call_method_un

Rich-Harris

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.

GAME_MASTER_POKEMON_v0_2.tsv

PkMn	BaseStamina	BaseAttack	BaseDefense	Type1	Type2	BaseCaptureRate	BaseFleeRate	CollisionRadiusM	CollisionHeightM	CollisionHeadRadiusM	MovementType	MovementTimerS	JumpTimeS	AttackTimerS	QuickMoves	CinematicMoves	AnimTime	Evolution	EvolutionPips	PokemonClass	PokedexHeightM	PokedexWeightKg	HeightStdDev	WeightStdDev	FamilyId	CandyToEvolve
1	90	126	126	HoloPokemonType.POKEMON_TYPE_GRASS	HoloPokemonType.POKEMON_TYPE_POISON	0.1599999964237213	0.10000000149011612	0.3815000057220459	0.6539999842643738	0.27250000834465027	HoloPokemonMovementType.POKEMON_ENC_MOVEMENT_JUMP	10.0	1.149999976158142	29.0	d601dd01	5a3b76	6d56d53fdaac2a3f6d56d53f93a9ea3f0000000036ab0a403333b33fbfbbbb3f	02	HoloPokemonClass.POKEMON_CLASS_NORMAL	1	0.699999988079071	6.900000095367432	0.08749999850988388	0.862500011920929	HoloPokemonFamilyId.V0001_FAMILY_BULBASAUR	25
2	120	156	158	HoloPokemonType.POKEMON_TYPE_GRASS	HoloPokemonType.POKEMON_TYPE_POISON	0.07999999821186066	0.07000000029802322	0.3187499940395355	0.637499988079071	0.2549999952316284	H

cookrn

#!/usr/bin/env ruby

if fetched_file_blank? or fetched_file_expired?
  fetch!
end

write_cached_screenfetch!

BEGIN {
  COMMAND = 'screenfetch'.freeze

nicolewhite

// Unzip the data-csv.zip file and rename the folder to import.
// Move the import folder into your Neo4j directory.
// $ bin/neo4j start
// $ bin/neo4j-shell < panama_import.cypher

// Delete character at line 31362, position 82 in Addresses.csv before continuing. 
// There is an escaped quote; the backslash needs to be removed.

CREATE CONSTRAINT ON (n:Address) ASSERT n.node_id IS UNIQUE;
CREATE CONSTRAINT ON (n:Officer) ASSERT n.node_id IS UNIQUE;

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.

takluyver

# (c) Thomas Kluyver, 2016
# Use it under the MIT license

# This is fairly experimental. Use at your own risk.

import ast
from ast import Call, Attribute, Name, Load
import asyncio as asyncio_mod
#import astpp
from IPython.utils.text import indent

Jarred-Sumner

// Comcast Cable Communications, LLC Proprietary. Copyright 2014.
// Intended use is to display browser notifications for critical and time sensitive events.
var _ComcastAlert = (function(){
	return {
		SYS_URL: '/e8f6b078-0f35-11de-85c5-efc5ef23aa1f/aupm/notify.do'
		, dragObj: {zIndex: 999999}
		, browser: null
		, comcastCheck: 1
		, comcastTimer: null
		, xmlhttp: null

adactio

'use strict';

// Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
// http://creativecommons.org/publicdomain/zero/1.0/

(function() {

    // A cache for core files like CSS and JavaScript
    var staticCacheName = 'static';
    // A cache for pages to store for offline