cpursley

PostgreSQL is Enough

• Simplify: move code into database functions
• Just Use Postgres for Everything
• PostgreSQL is the worlds’ best database
• Postgres is eating the database world
• Hacker News discussion

Background and Cron Jobs

teryror

Crafting a Compiler from Scratch: Implementation Notes

For the past two weeks or so, I've been working on a little compiler project in C, mostly for educational purposes, i.e. to understand how a compiler really works. I'm not using any libraries, other than the C runtime library.

Introduction

I have a hand-written lexer and parser, and a simple code generator targetting

KodrAus

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

FedericoPonzi

The book Java Generics and Collections has this information (pages: 188, 211, 222, 240).

List implementations:

                      get  add  contains next remove(0) iterator.remove
ArrayList             O(1) O(1) O(n)     O(1) O(n)      O(n)
LinkedList O(n) O(1) O(n) O(1) O(1) O(1)

maximebf

#!/usr/bin/python

# Equivalent of "tail -f" as a webpage using websocket
# Usage: webtail.py PORT FILENAME
# Tested with tornado 2.1

# Thanks to Thomas Pelletier for it's great introduction to tornado+websocket
# http://thomas.pelletier.im/2010/08/websocket-tornado-redis/

import tornado.httpserver

benvinegar

/**
 * Utility lib for setting/unsetting JavaScript breakpoints
 *
 * Usage:
 *   breakpoint.set('globalMethodName');
 *   breakpoint.unset('globalMethodName');
 *
 *   breakpoint.set('namespacedMethodName', namespaceObject);
 *   breakpoint.unset('namespacedMethodName', namespaceObject);
 */