ruby各种小脚本(集装箱)

有时候听歌听的入迷了,就想下载google的歌词,可是下下来总是这个样子...

引用

[00:17.00]有时后我觉得自己像一只小小鸟
[00:23.00]想要飞 却怎么样也飞不高
[00:30.00]也许有一天我栖上枝头 却成为猎人的目标
[00:36.00]我飞上了青天才发现自己从此无依无靠
[00:43.00]每次到了夜深人静的时候我总是睡不着
[00:50.00]我怀疑是不是只有我的明天没有变得更好
[00:56.00]未来会怎样究竟有谁会知道
[01:03.00]幸福是否只是一种传说 我永远都找不到
[01:10.00]我是一只小小小小鸟 想要飞呀飞却飞也飞不高
[01:24.00]我寻寻觅觅寻寻觅觅一个温暖的怀抱
[01:29.00]这样的要求算不算太高
[01:37.00]我是一只小小小小鸟 想要飞呀飞却飞也飞不高
[01:51.00]我寻寻觅觅寻寻觅觅一个温暖的怀抱
[01:56.00]这样的要求算不算太高
[02:03.43]所有知道我的名字的人啊你们好不好
[02:27.33]所有知道我的名字的人啊你们好不好
[02:33.29]世界是如此的小 我们注定无处可逃
[02:40.20]当我　尽人情冷暖 当你决定为你了的理想燃烧
[02:46.67]生活的压力与生命的尊严哪一个重要
[02:54.36]我是一只小小小小鸟 想要飞呀飞却飞也飞不高
[03:07.10]我寻寻觅觅寻寻觅觅一个温暖的怀抱
[03:13.22]这样的要求算不算太高
[03:21.00]我是一只小小小小鸟 想要飞呀飞却飞也飞不高
[03:33.90]我寻寻觅觅寻寻觅觅一个温暖的怀抱
[03:40.31]这样的要求算不算太高
[03:46.17]所有知道我的名字的人啊你们好不好
[03:47.05]这样的要求算不算太高
[03:58.43]所有知道我的名字的人啊你们好不好

一个一个的修改删除,这多没劲啊...所以...

f=File.open('M0030002007.lrc')
f.each do |line|
    puts line.gsub(/[\[\d:\.\]]/,'')
end  

评论

29 楼 fireflyman 2011-01-23  

require "shorturl"

puts ShortURL.shorten("http://mypage.com")
puts ShortURL.shorten("http://www.iteye.com", :moourl)

* <tt>:rubyurl</tt>
* <tt>:tinyurl</tt>
* <tt>:shorl</tt>
* <tt>:snipurl</tt>
* <tt>:metamark</tt>
* <tt>:makeashorterlink</tt>
* <tt>:skinnylink</tt>
* <tt>:linktrim</tt>
* <tt>:shorterlink</tt>
* <tt>:minlink</tt>
* <tt>:lns</tt>
* <tt>:fyad</tt>
* <tt>:d62</tt>
* <tt>:shi turl</tt>
* <tt>:littlink</tt>
* <tt>:clipurl</tt>
* <tt>:shortify</tt>
* <tt>:orz</tt>
* <tt>:moourl</tt>
* <tt>:urltea</tt>
* <tt>:vurl</tt>

28 楼 fireflyman 2011-01-20  

$ irb
>> 2*3
=> 6
>> _ + 7
=> 13
>> _
=> 13

在$ script/console里一样有效

27 楼 fireflyman 2011-01-20  

inject

# Sum some numbers

(5..10).inject {|sum, n| sum + n } #=> 45

# Multiply some numbers

(5..10).inject(1) {|product, n| product * n } #=> 151200

# find the longest word

longest = %w{ cat sheep bear }.inject do |memo,word|
  memo.length > word.length ? memo : word
end
longest #=> "sheep"

# find the length of the longest word

longest = %w{ cat sheep bear }.inject(0) do |memo,word|
  memo >= word.length ? memo : word.length
end
longest #=> 5

26 楼 fireflyman 2011-01-20  

You may know about the :disabled option for form elements such as buttons, text-fields etc:

submit_tag "Pay", :disabled => true

Did you know, you can pass any boolean expression as a value?

submit_tag "Pay", :disabled => @cart.empty?

25 楼 fireflyman 2011-01-20  

all? and any?

%w{ ant bear cat}.all? {|word| word.length >= 3} #=> true
%w{ ant bear cat}.all? {|word| word.length >= 4} #=> false
[ nil, true, 99 ].all?                           #=> false

%w{ ant bear cat}.any? {|word| word.length >= 3} #=> true
%w{ ant bear cat}.any? {|word| word.length >= 4} #=> true
[ nil, true, 99 ].any?                           #=> true

24 楼 fireflyman 2011-01-17  

3 ways to invoke a method in Ruby

irb(main):001:0> str = 'Hello'
=> "Hello"
irb(main):002:0> str.method(:length).call
=> 5
irb(main):003:0> str.send(:length)
=> 5
irb(main):004:0> str.length
=> 5

23 楼 fireflyman 2011-01-17  

   after_filter :set_charset
     
    def set_charset
      content_type = @headers["Content-Type"] || 'text/html'
      if /^text\//.match(content_type)
        @headers["Content-Type"] = "#{content_type}; charset=utf-8"
      end
    end

22 楼 fireflyman 2011-01-14  

随机生成十六进制颜色

"#"+rand(255).to_s(16)+rand(255).to_s(16)+rand(255).to_s(16)

21 楼 fireflyman 2011-01-14  

对于多数的model的select列表,都可用model属性+方法的形式,做一个列表,然后在form里显示.

很常见的,比如.

def self.purchase_status
 {0 => "未确定", 1 => "已订购", 2 => "准备出库", 3 => "已发货"}
end

在form里,这样调用

<td>
 <th>购买状态</th>
 <td><%= f.select :purchase_status, PlaceBuyUser.purchase_status.invert %></td>
</td>

在一些list的地方，也会把这个值作为一个显示

 def purchase_status_view
   PlaceBuyUser.purchase_status[self.purchase_status]
 end

调用的时候:

<td><%= purchase_status_view %></td>

20 楼 fireflyman 2011-01-14  

1、find :first 和find :all

使用 Model.find_by_user_name ,来简写

Model.find(:first, :conditions=>["user_name=?",user_name])

使用 Model.find_all_by_user_name ，来简写

 Model.find(:all, :conditions=>["user_name=?",user_name])

这里也可以使用and，比如典型的用户名和密码查询：

Person.find_by_user_name_and_password(user_name, password)

find也支持带参数的查询，比如Payment.find_all_by_amount(50,rder => “created_on”)

2、find_or_create_by_和find_or_initialize_

find_or_create_by_：当查询的内容不存在时，创建并保存该记录

find_or_initialize_：更上面的相似，只是创建不保存该记录，需要自己再次save

这里也支持参数和代码块，如

User.find_or_create_by_name('Bob', :age => 40) { |u| u.admin = true }

3、find_by_的时候，支持多属性，如

Tag.find_or_create_by_name(:name => “rails”, :creator => current_user)

19 楼 googya 2011-01-09  

这些很有趣。。
特别是： 
 

x = [1,2,3,4,5,6,7,8,9,10]

x.first 5 
=> [1,2,3,4,5] 

x.last 2 
=> [9,10]

18 楼 fireflyman 2011-01-05  

If you want to throw the exception after rolling back you can do something like this:

  Company.transaction do
    user.save
    company.save
    x = 1/0
  rescue
    exp = $!
    begin
      raise ActiveRecord::Rollback
    rescue
    end
    raise exp
  end

17 楼 fireflyman 2010-12-31  

关键字过滤脚本
源地址:http://www.iteye.com/problems/14251

arry=%W{sb TMD NND}
str="asf sdf sdf ssd fs fs fssb sb dsfTMD TMD sdfNND NND"
arry.each do |a|
  str.gsub!(/\b#{a}\b/im){|word| "*"*word.size}
end
puts str
=> "asf sdf sdf ssd fs fs fssb ** dsfTMD *** sdfNND ***

"

16 楼 fireflyman 2010-12-31  

Ruby执行定时任务小脚本-->
源地址:http://chinaonrails.com/topic/view/4302.html
(1)

def background_every_n_seconds(n)
  fork do
    loop do
      before = Time.new
      yield
      interval = n - ( Time.now - before )
      sleep(interval) if interval > 0
    end
  end
end

background_every_n_seconds(300) {
  # do something every 300 seconds
}

(2)eventmachie

#!/usr/bin/env ruby
require 'rubygems'
require 'eventmachine'
EM.run do
  EM::PeriodicTimer.new(300) do
    #每300秒输出一次时间
    puts Time.now
  end
end

15 楼 fireflyman 2010-12-31  

与RSS有关的-->

#layout:
<%= yield :head %>
 #可以在对应试图中定义content_for :head代码块来将数据插入到这地方.
#views
<% content_for :head do %>
  <%= auto_discovery_link_tag %>
<% end %>

==><link href="http://localhost:3000/articles" rel="alternate" title="RSS" type="application/rss+xml"/>

14 楼 fireflyman 2010-12-30  

Hpricot 使用 CSS 的类来搜索 HTML 文档中的元素

require 'rubygems'
require 'hpricot'
require 'open-uri'

doc = Hpricot(open('http://www.rubyinside.com/test.html'))
puts doc.search("h1").first.inner_html

list = doc.at("ul")
highlighted_item = list.at("/.highlighted")
puts highlighted_item.inner_html

13 楼 fireflyman 2010-12-30  

RSS 2.0

require 'rss/2.0'
require 'open-uri'

url = 'http://fireflyman.iteye.com/rss'
feed = RSS::Parser.parse(open(url).read, false)
puts "#{feed.channel.title}"
feed.items.each do |item|
  puts item.title
  puts " (#{item.link})"
  puts
  puts item.description
end

12 楼 fireflyman 2010-12-30  

从书里找到这段更Cool的代码

require 'win32ole'

ChartTypeVal = -4100;

excelobj = WIN32OLE.new("excel.application")

excelobj['Visible']=TRUE
excelobj.Workbooks.Add()


excelobj.Range("a6")['Value'] = 100
excelobj.Range("a30")['Value'] = 999


excelobj.Range("a1")['Value'] = 100
excelobj.Range("a2")['Value'] = 200
excelobj.Range("a3")['Value'] = 300
excelobj.Range("a4")['Value'] = 400
excelobj.Range("a1:a4").select()

excelchart = excelobj.Charts.Add()
excelchart['Type'] = ChartTypeVal

30.step(180,5) do |r|
 excelchart.rotation = r
 sleep(0.1)
end

excelobj.ActiveWorkbook.Close(0)
excelobj.Quit()

11 楼 fireflyman 2010-12-30  

Ruby 调用 Windows Excel 来生成电子表格

require 'win32ole'

excelobj = WIN32OLE.new("excel.application")

excelobj['Visible']=TRUE
excelobj.workbooks.add()


excelobj.Range("a6")['Value'] = 100


excelobj.Range("a1")['Value'] = 100
excelobj.Range("a2")['Value'] = 200
excelobj.Range("a3")['Value'] = 300
excelobj.Range("a4")['Value'] = 400
excelobj.Range("a1:a4").select()

10 楼 fireflyman 2010-12-30  

Ruby 对字符串进行转码

require 'iconv'
input_encoding = "windows-1252"
output_encoding = 'utf-8'

converted_doc = Iconv.new(output_encoding, input_encoding).iconv("asdf")