keating’s gists

keating / fork研究.rb

Created September 23, 2012 03:49

使用fork启动一个进程

	pid = fork { `nohup ruby GpsReader.rb 1 &` }
	# 这种写法能得到一个子进程的PID，但不是shell命令所运行进程的PID，若shell命令启动一个服务（一直运行），那么此子进程也不会死掉（与block是个while true,子进程便不会死掉一样）
	pid = fork { exec "`nohup ruby GpsReader.rb 1 &`" }
	# 这种写法能得到一个子进程的PID，同样不是shell命令进程的PID，子进程马上就结束了（ps S -C ruby或ps S -p your_PID），是exec方法在起作用(Replaces the current process by running the given external _command_)，所以，在ruby代码运行一个shell命令时，使用exec要比直接`少一个进程
	Process.detach(pid)
	puts pid

	while true
	puts "i am father..."
	sleep 2

keating / IE9下colspan不起作用的解决办法.html

Created September 25, 2012 01:49

IE9下colspan不起作用的解决办法:在最前面加一个tr,其中添加colspan数量的td

	<style type="text/css">
	td {
	border: 1px solid #ccc;
	height: 24px;
	padding: 2px;
	vertical-align: top;
	}

	.ie9-bug-tr td {
	height: 0px;

keating / 用数组存储.rb

Created October 12, 2012 15:35

动态规划研究

	# 返回城市距离
	def dis e1, e2
	if (e1 == "A" and e2 == "E") \|\| (e1 == "E" and e2 == "B") \|\| (e1 == "B" and e2 == "F")
	return 5
	end
	10
	end

	@boxes = []

keating / gps_reader.rb

Created December 20, 2012 01:47

Soap with Ruby gem Savon

	def fetch_gps
	$client \|\|= Savon.client("http://...ip.../GPSInfo/Service.asmx?WSDL")
	data_hash, data_qty = {}, 0

	@equipments.each do \|equ_no\|
	begin
	response = $client.request "getGPSInfoByID" do
	$client.http.headers["Content-Type"] = "text/xml; charset=utf-8"
	$client.http.headers["SOAPAction"] = "http://tempuri.org/getGPSInfoByID"
	soap.body = {:id => equ_no}

keating / tracker_remind.rb

Last active December 10, 2015 00:28

use Mechanize

	agent = Mechanize.new
	page = agent.get('http://....../login')
	form = page.forms[0]
	form["user_session[login]"] = "......"
	form["user_session[password]"] = "......"
	form.submit
	#puts page.uri
	page = agent.get('http://...../synchrons')
	#puts page.uri
	#puts page

keating / ActiveRecord_connection.rb

Created December 27, 2012 02:44

use ActiveRecord with in ruby script

	require "active_record"

	ActiveRecord::Base.establish_connection(
	:adapter => "postgresql",
	:host => "localhost",
	:username => "map",
	:password => "map",
	:database => "lspf"
	)

keating / customize validation.rb

Last active December 10, 2015 12:28

You can use the 't' method with `I18n.t` in models. And the first parameter of the 'add' method here should be empty string for not be reduplicate. A new method is not necessary, see the second file.

	validate :start_date_validate

	def start_date_validate
	if start_date && end_date
	if start_date >= end_date
	errors.add("", I18n.t("education_information.start_end_not_validate"))
	end
	end
	end

keating / jruby-test.txt

Last active December 10, 2015 19:38

jruby 性能测试

	===development/webrick================================================================
	内存：
	启动(点击首页) 查询提单打开两个浏览器轮流查询 2分钟不操作
	CRuby 1.8% 2.5% 3.5% 3.5%
	JRuby 10.9% 11.0% 11.9% 11.9%

	CPU在查询提单时最大占用率(大约)
	CRuby 30%
	JRuby 40%

keating / cpu.rb

Created January 12, 2013 09:31

测试JRuby性能代码 Codes for test JRuby performance || Comparing ruby1.9 and JRuby performance

	2.times.map {
	Thread.new { while true do end }
	}.each(&:join)

keating / 测试.rb

Last active December 11, 2015 09:28



	#1
	# 测试登录，omniauth-identity
	it "will show save search button in home" do
	OmniAuth.config.test_mode = false
	user \|\|= FactoryGirl.create(:identity_first)
	visit login_path
	within("form") do
	fill_in 'auth_key', with: user.email

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