JeffreyWay

You know how, in JavaScript, we can set a value to a variable if one doesn't, like this:

name = name || 'joe';

This is quite common and very helpful. Another option is to do:

name || (name = 'joe');

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

kevinwright

#!/bin/bash

if [ $# -lt 2 ]; then
  echo "format: git_cleanup <repo name> [-x/--expunge <directory 1> -l/--keeplatest <directory 2> ...]"
  exit
fi

PROJ="$1"
shift

MorikoHandford

#!/bin/bash

# WARNING
#   This expects your repository to be in ~/git .  If your repository is elsewhere you will need to alter the script.  

# SYNOPSIS
#   git_cleanup [repo name] [-xl]

# DESCRIPTION
#   This script allows people to delete (-x) the history of a directory OR destroy (-l) the history of a directory and just

joepie91

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

• Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
• Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
• If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
• If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

agm1984

import React, { Component } from 'react'
import UserDetails from './UserDetails'

/**
 * This utility function allows function calls to be debounced.
 * @param {Function} func Function that requires debouncing
 * @param {Number} wait Wait time in milliseconds between successive invocations
 */
const debounce = (func, wait) => {
  let timeout

bzg