#!/usr/bin/env bash | |
# memusg -- Measure memory usage of processes | |
# Usage: memusg COMMAND [ARGS]... | |
# | |
# Author: Jaeho Shin <netj@sparcs.org> | |
# Created: 2010-08-16 | |
############################################################################ | |
# Copyright 2010 Jaeho Shin. # | |
# # | |
# Licensed under the Apache License, Version 2.0 (the "License"); # |
# A small DSL for helping parsing documents using Nokogiri::XML::Reader. The | |
# XML Reader is a good way to move a cursor through a (large) XML document fast, | |
# but is not as cumbersome as writing a full SAX document handler. Read about | |
# it here: http://nokogiri.org/Nokogiri/XML/Reader.html | |
# | |
# Just pass the reader in this parser and specificy the nodes that you are interested | |
# in in a block. You can just parse every node or only look inside certain nodes. | |
# | |
# A small example: | |
# |
# Patrick Oscity | |
# | |
# Bauhaus-Universität Weimar | |
# Fakultät Medien | |
# SoSe 2011 | |
require 'rubygems' | |
require 'wavefile' |
The normal controller/view flow is to display a view template corresponding to the current controller action, but sometimes we want to change that. We use render
in a controller when we want to respond within the current request, and redirect_to
when we want to spawn a new request.
The render
method is very overloaded in Rails. Most developers encounter it within the view template, using render :partial => 'form'
or render @post.comments
, but here we'll focus on usage within the controller.
It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media
This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.
local t_insert,t_concat = table.insert,table.concat; | |
local s_char = string.char; | |
local pairs,ipairs = pairs,ipairs; | |
local type = type; | |
local tostring,tonumber = tostring,tonumber; | |
-- DNS Parser | |
-- The following is a parser for the DNS format defined in RFC1035 |
#!/bin/env ruby | |
# lazy hack from Robert Klemme | |
module Memory | |
# sizes are guessed, I was too lazy to look | |
# them up and then they are also platform | |
# dependent | |
REF_SIZE = 4 # ? | |
OBJ_OVERHEAD = 4 # ? |