catsocks catsocks

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

People

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Twelve Go Best Practices

Francesc Campoy Flores Gopher at Google @francesc http://campoy.cat/+

http://golang.org

Best practices

Backend Development

node.js
- Installation paths: use one of these techniques to install node and npm without having to sudo.
- Node.js HOWTO: Install Node+NPM as user (not root) under Unix OSes
- Felix's Node.js Guide
- Creating a REST API using Node.js, Express, and MongoDB
- Node Cellar Sample Application with Backbone.js, Twitter Bootstrap, Node.js, Express, and MongoDB
- JavaScript Event Loop
Node.js for PHP programmers

	package main

	import (
	"encoding/base64"
	"net/http"
	"strings"
	)

	type handler func(w http.ResponseWriter, r *http.Request)

	var attempts = 1;

	function createWebSocket () {
	var connection = new WebSocket();

	connection.onopen = function () {
	// reset the tries back to 1 since we have a new connection opened.
	attempts = 1;

	// ...Your app's logic...

	/*
	* Sample file using the Linux kernel coding convention.
	*
	* https://www.kernel.org/doc/Documentation/CodingStyle
	*
	* General rules:
	* - Indents are tabs and must be 8 spaces wide.
	* - Each line must be at most 80 characters long.
	* - Use C-style comments.
	* - File names should be lower-case.c

	package main

	import (
	"fmt"
	"image"
	"os"
	_ "image/jpeg"
	_ "image/png"
	)

	/*
	Serve is a very simple static file server in go
	Usage:
	-p="8100": port to serve on
	-d=".": the directory of static files to host

	Navigating to http://localhost:8100 will display the index.html or directory
	listing file.
	*/
	package main