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@huntie
huntie / metro.config.js
Last active July 10, 2023 01:53
Snippets accompanying my article "A concise guide to configuring React Native with Yarn Workspaces" on Medium
/**
* Metro Bundler configuration
* https://facebook.github.io/metro/docs/en/configuration
*
* eslint-env node, es6
*/
const exclusionList = require('metro-config/src/defaults/exclusionList');
const getWorkspaces = require('get-yarn-workspaces');
const path = require('path');
type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
export function withAppContext<
P extends { appContext?: AppContextInterface },
R = Omit<P, 'appContext'>
>(
Component: React.ComponentClass<P> | React.StatelessComponent<P>
): React.SFC<R> {
return function BoundComponent(props: R) {
return (
@iammerrick
iammerrick / PinchZoomPan.js
Last active January 26, 2026 06:44
React Pinch + Zoom + Pan
import React from 'react';
const MIN_SCALE = 1;
const MAX_SCALE = 4;
const SETTLE_RANGE = 0.001;
const ADDITIONAL_LIMIT = 0.2;
const DOUBLE_TAP_THRESHOLD = 300;
const ANIMATION_SPEED = 0.04;
const RESET_ANIMATION_SPEED = 0.08;
const INITIAL_X = 0;
@paulirish
paulirish / what-forces-layout.md
Last active March 17, 2026 07:48
What forces layout/reflow. The comprehensive list.

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
@karpathy
karpathy / min-char-rnn.py
Last active March 21, 2026 03:14
Minimal character-level language model with a Vanilla Recurrent Neural Network, in Python/numpy
"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np
# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)
@albertbori
albertbori / Installation.md
Last active February 11, 2026 14:56
Automatically disable Wifi when an Ethernet connection (cable) is plugged in on a Mac

Overview

This is a bash script that will automatically turn your wifi off if you connect your computer to an ethernet connection and turn wifi back on when you unplug your ethernet cable/adapter. If you decide to turn wifi on for whatever reason, it will remember that choice. This was improvised from this mac hint to work with Yosemite, and without hard-coding the adapter names. It's supposed to support growl, but I didn't check that part. I did, however, add OSX notification center support. Feel free to fork and fix any issues you encounter.

Most the credit for these changes go to Dave Holland.

Requirements

  • Mac OSX 10+
  • Administrator privileges
@fitnr
fitnr / filter.handlebars
Last active March 24, 2020 18:43
Example of the filter helper in handlebars
---
animal: cat
mylist:
- dog
- bear
- cat
myprop: species