Carlo Zottmann czottmann

This is a RESTful Rails controller, implementing all 7 RESTful actions. In my Rails apps, 9 out of 10 controllers will end up looking like this.

class PostsController < ApplicationController
  load_and_authorize_resource

  def create
    @post.save and redirect_to(@post) or render(:new)
  end

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The Dao of Functional Programming

2026

February

httpz — Zero-Allocation HTTP/1.1 Parser for OxCaml

A high-performance HTTP/1.1 parser and serializer achieving zero heap allocations using OxCaml's unboxed types (int16#, int64#, char#) and local allocations.

> Will soon have io_uring on Linux.

Raspberry Pi VPN Router

This is a quick-and-dirty guide to setting up a Raspberry Pi as a "router on a stick" to PrivateInternetAccess VPN.

Requirements

Install Raspbian Jessie (2016-05-27-raspbian-jessie.img) to your Pi's sdcard.

Use the Raspberry Pi Configuration tool or sudo raspi-config to:

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

Javascript `log` Function

Every time I start a new project, I want to pull in a log function that allows the same functionality as the console.log, including the full functionality of the Console API.

There are a lot of ways to do this, but many are lacking. A common problem with wrapper functions is that the line number that shows up next to the log is the line number of the log function itself, not where log was invoked. There are also times where the arguments get logged in a way that isn't quite the same as the native function.

This is an attempt to once and for all document the function that I pull in to new projects. There are two different options:

The full version: Inspired by the plugin in HTML5 Boilerplate. Use this if you are writing an application and want to create a window.log function. Additionally,

	<%# Put this code snippet between the <head></head>-tags in your application layout and %>
	<%# replace 'UA-XXXXXXXX-X' with your own unique Google Analytics Tracking ID %>

	<%# ... %>
	<head>
	<%# ... %>
	<% if Rails.env.production? %>
	<script type="text/javascript">
	(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]\|\|function(){
	(i[r].q=i[r].q\|\|[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),

	class API::V1::BaseController < ApplicationController

	skip_before_filter :verify_authenticity_token

	before_filter :cors_preflight_check
	after_filter :cors_set_access_control_headers

	def cors_set_access_control_headers
	headers['Access-Control-Allow-Origin'] = '*'
	headers['Access-Control-Allow-Methods'] = 'POST, GET, PUT, DELETE, OPTIONS'

	<html>
	<head>
	<title>Zero-Lag Coinwidget Button</title>
	</head>
	<body>
	<h1>Zero-Lag Coinwidget Button</h1>
	<p><a class="donateButton">Support This Site with Bitcoin</a></p>
	<p>If you're running a Tumblr blog or something else that has lots of content,
	you may have already noticed that calls to coinwidget.com can be laggy and
	block the page when donation counts are enabled. This isn't their fault, I

	ACTION
	AD_HOC_CODE_SIGNING_ALLOWED
	ALTERNATE_GROUP
	ALTERNATE_MODE
	ALTERNATE_OWNER
	ALWAYS_SEARCH_USER_PATHS
	ALWAYS_USE_SEPARATE_HEADERMAPS
	APPLE_INTERNAL_DEVELOPER_DIR
	APPLE_INTERNAL_DIR
	APPLE_INTERNAL_DOCUMENTATION_DIR

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote