jaredpalmer

import * as React from 'react';

/**
 * React.Ref uses the readonly type `React.RefObject` instead of
 * `React.MutableRefObject`, We pretty much always assume ref objects are
 * mutable (at least when we create them), so this type is a workaround so some
 * of the weird mechanics of using refs with TS.
 */
export type AssignableRef<ValueType> =
  | {

swyxio

// create context with no upfront defaultValue
// without having to do undefined check all the time
function createCtx<A>() {
  const ctx = React.createContext<A | undefined>(undefined)
  function useCtx() {
    const c = React.useContext(ctx)
    if (!c) throw new Error("useCtx must be inside a Provider with a value")
    return c
  }
  return [useCtx, ctx.Provider] as const

developit

🐻 valoo

just the bare necessities of state management.

Usage

Hotlink it from https://unpkg.com/valoo.

See Interactive Codepen Demo.

stolinski

import { makeExecutableSchema, addMockFunctionsToSchema } from 'graphql-tools';
import { graphql } from 'graphql';
import GraphQLMock from 'graphql-mock';
import typeDefs from 'imports/startup/both/typeDefs';

// Make a GraphQL schema with no resolvers
const schema = makeExecutableSchema({ typeDefs });

// Creates random id
const revisedRandId = () =>

HelloWorld.sol

pragma solidity ^0.4.19;

contract HelloWorld {
    string defaultResponse = "Hello to a decentralized world!";
    
    function getResponse(string here) public returns (string) {
        return here;
    }
}

carlosgruiz-dev

A

• A bit of Vim - a book which aims to help you to learn how to use the Vim editor.
• A.W.E.S.O.M. O - The really big list of really interesting open source projects.
• AMP Project - The project enables the creation of websites and ads that are consistently fast, beautiful and high-performing across devices and distribution platforms.
• APE - Angular JS REST Client.
• ASCII Art - Real-Time ASCII Art Rendering Library
• AST Explorer - A web tool to explore the ASTs generated by various parsers.
• Advanced Bash-Scripting Guide - An in-depth exploration of the art of shell scripting by Mendel Cooper.
• Advent of Code - is a series of small programming puzzles for a variety of skill levels.

romainl

Epictetus

Philosophy is a way of life and not just a theoretical discipline.

Epictetus (55 — 135 AD) was a Greek slave of Rome. He became a great Stoic philosopher and teacher, and was eventually freed.

Although he was a fatalist, he believed that individuals are responsible for their own actions, which they can examine and control through rigorous self-discipline.

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

jbergler

.vagrant

bsweger

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)