| #!/usr/bin/env ruby | |
| # encoding: utf-8 | |
| class AStar | |
| def initialize(width, height, max_cost) | |
| @grid = create_random(width, height, max_cost) | |
| @start = @grid[0][0] | |
| @end = @grid[height - 1][width - 1] | |
| @open, @closed = [], [@start] | |
| end |
| class ActiveRecord::Base | |
| def self.import!(record_list) | |
| raise ArgumentError 'record_list not an Array of Hashes' unless record_list.is_a?(Array) && record_list.all? {|rec| rec.is_a? Hash } | |
| return if record_list.empty? | |
| record_list.in_groups_of(1000, false).each do |record_group| | |
| key_list, value_list = convert_record_list(record_group) | |
| sql = "INSERT INTO #{self.table_name} (#{key_list.join(', ')}) VALUES #{value_list.map {|rec| "(#{rec.join(', ')})" }.join(' ,')}" | |
| self.connection.insert_sql(sql) |
This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"
| // --- Compiling --- | |
| $ wget http://download.redis.io/releases/redis-2.8.3.tar.gz | |
| $ tar xzvf redis-2.8.3.tar.gz | |
| $ cd redis-2.8.3 | |
| $ make | |
| $ make install | |
| // --- or using yum --- | |
| $ rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm | |
| $ rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm |
When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.
Raw Attribute Strings
<div my-directive="some string" another-param="another string"></div>
Original link: http://www.concentric.net/~Ttwang/tech/inthash.htm
Taken from: http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
Reformatted using pandoc
Thomas Wang, Jan 1997
last update Mar 2007
One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.
Most workflows make the following compromises:
Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.
Use production SSL certificates locally. This is annoying
| defmodule Crypto do | |
| def md5(s) do | |
| list_to_binary(Enum.map(bitstring_to_list(:crypto.md5(s)), fn(x) -> integer_to_binary(x, 16) end)) | |
| end | |
| end |
| after "deploy:create_symlink", "resque:restart_workers" | |
| after "resque:restart_workers", "resque:restart_scheduler" | |
| ## | |
| # Rake helper task. | |
| # http://pastie.org/255489 | |
| # http://geminstallthat.wordpress.com/2008/01/27/rake-tasks-through-capistrano/ | |
| # http://ananelson.com/said/on/2007/12/30/remote-rake-tasks-with-capistrano/ | |
| def run_remote_rake(rake_cmd) | |
| rake_args = ENV['RAKE_ARGS'].to_s.split(',') |
