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function findLongestWordLength(str) {
  return str.split(' ').reduce((prev, curr) => {
    if (prev.length > curr.length) {
      return prev
    }
    return curr
  }).length;
}

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Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}'

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

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Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

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CREATE OR REPLACE FUNCTION public.truncate_tables(username character varying)
 RETURNS void
 LANGUAGE plpgsql
AS $function$
DECLARE
    statements CURSOR FOR
        SELECT tablename FROM pg_tables
        WHERE tableowner = username AND schemaname = 'public';
BEGIN
    FOR stmt IN statements LOOP

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How-to setup a simple git push deployment

These are my notes basically. At first i created this gist just as a reminder for myself. But feel free to use this for your project as a starting point. If you have questions you can find me on twitter @thomasf https://twitter.com/thomasf This is how i used it on a Debian Wheezy testing (https://www.debian.org/releases/testing/)

Discuss, ask questions, etc. here https://news.ycombinator.com/item?id=7445545

On the server (example.com)

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web:    node index.js
worker: node queue.js

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#!/bin/bash

echo "WARN: This will remove everything from docker: volumes, containers and images. Will you dare? [y/N] "
read choice

if [ \( "$choice" == "y" \) -o \( "$choice" == "Y" \) ]
then
  sudo echo "> sudo rights [OK]"
  sizea=`sudo du -sh /var/lib/docker/aufs`

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var CancelablePromise = (function(){
  var cancelledPromiseSymbol = Symbol('PROMISE_CANCELLED');

  function createTypeError(message) {
    var error = new TypeError(message);
    var stack = error.stack.split('\n');
    stack.splice(1, 1);
    stack[1] = stack[1].replace(/:\d+:\d+\)$/, ')');
    error.stack = stack.join('\n');
    throw error;

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

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CREATE OR REPLACE FUNCTION truncate_tables(username IN VARCHAR) RETURNS void AS $$
DECLARE
    statements CURSOR FOR
        SELECT tablename FROM pg_tables
        WHERE tableowner = username AND schemaname = 'public';
BEGIN
    FOR stmt IN statements LOOP
        EXECUTE 'TRUNCATE TABLE ' || quote_ident(stmt.tablename) || ' CASCADE;';
    END LOOP;
END;