foyoto
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有时候对一些基础的东西，不知道它的边界在哪里，其实做些小实验就知道了.不知道其他人想过下面这样的问题没?
1.我们创建一个对象，直接保存到数据库，会是什么情况？
完整文字 id(integer) name(string) sex(string) age(integer) birthday(date) created_at(time) updated_at(time)
编辑 删除 1 NULL NULL NULL NULL 2011-04-19 15:32:39 2011-04-19 15:32:39
2.我们从数据库直接读出来会是什么结果呢？
#<User id: 7, name: nil, sex: nil, age: nil, birthday: nil, created_at: "2011-04-19 15:32:39", updated_at: "2011-04-19 15:32:39">
3.如果我们设置了默认值，重复上面的步骤会是什么结果呢？
完整文字 id name sex age birthday created_at updated_at
编辑 删除 1 NULL 男 0 2011-01-31 2011-04-19 15:42:40 2011-04-19 15:42:40
#<User id: 1, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:42:40", updated_at: "2011-04-19 15:42:40">
4.我们来做测试下的操作
测试的日志：
a.其他类型(string,integer,date,time,array,hash,nil)到string
>>u = User.new
u = User.new
=> #<User id: nil, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
?>u.name = "abc"
=> "abc"
>>u
=> #<User id: nil, name: "abc", sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
>>u.name = 100
=> 100
>>u
=> #<User id: nil, name: 100, sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
>>u.name.class
=> Fixnum
>>Date.now
NoMethodError: private method `now' called for Date:Class
from (irb):10
>>Date.new
=> Mon, 01 Jan -4712
>>u.name = Date.new
=> Mon, 01 Jan -4712
>>u.save
=> true
>>u
=> #<User id: 2, name: "-4712-01-01", sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:55:15">
>>u.name.class
=> Date
>>u.name = Time.now
=> Tue Apr 19 23:56:59 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: "2011-04-19 23:56:59", sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:57:06">
>>u.name.class
=> Time
>>u.name = ["a","b","c"]
=> ["a", "b", "c"]
>>u.save
=> true
>>u
=> #<User id: 2, name: ["a", "b", "c"], sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:58:19">
>>u.name.class
=> Array
>>u
=> #<User id: 2, name: ["a", "b", "c"], sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:58:19">
>>u.name = {:a => "a",:b => "b",:c => "c"}
=> {:c=>"c", :a=>"a", :b=>"b"}
>>u.save
=> true
>>u
=> #<User id: 2, name: {:c=>"c", :a=>"a", :b=>"b"}, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:59:48">
>>u.name.class
=> Hash
>>u.name
=> {:c=>"c", :a=>"a", :b=>"b"}
>>u.name = nil
=> nil
>>u
=> #<User id: 2, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:59:48">
>>u.save
=> true
>>u.name
=> nil
>>u.name = true
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:01:27">
>>u.name.class
=> TrueClass
b.其他类型到integer
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:01:27">
>>u.age = "abc"
=> "abc"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:06:33">
>>u.age = 12.6
=> 12.6
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 12, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:07:14">
>>u.age = Date.new
=> Mon, 01 Jan -4712
>>u.save
u.save
=> true
?>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:08:17">
>>u.age = Time.now
=> Wed Apr 20 00:08:50 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1303229330, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:08:56">
>>u.age = ['a','b','c']
=> ["a", "b", "c"]
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:09:29">
>>u.age = {"a" => "aa","b" => "bb","c" => "cc"}
=> {"a"=>"aa", "b"=>"bb", "c"=>"cc"}
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:09:29">
>>u.age = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: nil, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:10:47">
>>u.age = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:11:13">
>>u.age = false
=> false
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:11:13">
c.其他类型到Date
>>u.birthday = 120
=> 120
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: nil, updated_at: "2011-04-19 16:31:49">
>>u.birthday = "abcdef"
=> "abcdef"
>>u.birthday
u.birthday
=> nil
?>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: nil, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:16:57">
>>u.birthday = "2011-01-25"
=> "2011-01-25"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-25", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:13:12">
>>u.birthday = "2011-02-25 17:28:32"
=> "2011-02-25 17:28:32"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-02-25", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:14:19">
>>u.birthday = Date.new
u.birthday = Date.new
=> Mon, 01 Jan -4712
?>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "-4712-01-01", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:15:28">
>>u.birthday = Time.now
=> Wed Apr 20 00:15:55 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-04-20 00:15:55", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:15:59">
>>u.birthday = nil
=> nil
>>u.save
u.save
=> true
?>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: nil, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:16:57">
>>u.birthday = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:20:33">
d.其他类型到time
>>u.created_at = "abc"
=> "abc"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = 12
=> 12
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.birthday = false
=> false
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: false, created_at: nil, updated_at: "2011-04-19 16:30:37">
>>u.created_at = "2011-01-25"
=> "2011-01-25"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-01-25 00:00:00", updated_at: "2011-04-19 16:32:28">
>>u.created_at = "2011-02-25 17:28:32"
=> "2011-02-25 17:28:32"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-02-25 17:28:32", updated_at: "2011-04-19 16:32:51">
>>u.created_at = Date.new
=> Mon, 01 Jan -4712
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "-4713-12-31 16:00:00", updated_at: "2011-04-19 16:33:15">
>>u.created_at = Time.now
=> Wed Apr 20 00:33:30 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-04-19 16:33:30", updated_at: "2011-04-19 16:33:40">
>>u.created_at = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: nil, updated_at: "2011-04-19 16:34:29">
1.我们创建一个对象，直接保存到数据库，会是什么情况？
完整文字 id(integer) name(string) sex(string) age(integer) birthday(date) created_at(time) updated_at(time)
编辑 删除 1 NULL NULL NULL NULL 2011-04-19 15:32:39 2011-04-19 15:32:39
2.我们从数据库直接读出来会是什么结果呢？
#<User id: 7, name: nil, sex: nil, age: nil, birthday: nil, created_at: "2011-04-19 15:32:39", updated_at: "2011-04-19 15:32:39">
3.如果我们设置了默认值，重复上面的步骤会是什么结果呢？
完整文字 id name sex age birthday created_at updated_at
编辑 删除 1 NULL 男 0 2011-01-31 2011-04-19 15:42:40 2011-04-19 15:42:40
#<User id: 1, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:42:40", updated_at: "2011-04-19 15:42:40">
4.我们来做测试下的操作
测试的日志：
a.其他类型(string,integer,date,time,array,hash,nil)到string
>>u = User.new
u = User.new
=> #<User id: nil, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
?>u.name = "abc"
=> "abc"
>>u
=> #<User id: nil, name: "abc", sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
>>u.name = 100
=> 100
>>u
=> #<User id: nil, name: 100, sex: "男", age: 0, birthday: "2011-01-31", created_at: nil, updated_at: nil>
>>u.name.class
=> Fixnum
>>Date.now
NoMethodError: private method `now' called for Date:Class
from (irb):10
>>Date.new
=> Mon, 01 Jan -4712
>>u.name = Date.new
=> Mon, 01 Jan -4712
>>u.save
=> true
>>u
=> #<User id: 2, name: "-4712-01-01", sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:55:15">
>>u.name.class
=> Date
>>u.name = Time.now
=> Tue Apr 19 23:56:59 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: "2011-04-19 23:56:59", sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:57:06">
>>u.name.class
=> Time
>>u.name = ["a","b","c"]
=> ["a", "b", "c"]
>>u.save
=> true
>>u
=> #<User id: 2, name: ["a", "b", "c"], sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:58:19">
>>u.name.class
=> Array
>>u
=> #<User id: 2, name: ["a", "b", "c"], sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:58:19">
>>u.name = {:a => "a",:b => "b",:c => "c"}
=> {:c=>"c", :a=>"a", :b=>"b"}
>>u.save
=> true
>>u
=> #<User id: 2, name: {:c=>"c", :a=>"a", :b=>"b"}, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:59:48">
>>u.name.class
=> Hash
>>u.name
=> {:c=>"c", :a=>"a", :b=>"b"}
>>u.name = nil
=> nil
>>u
=> #<User id: 2, name: nil, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 15:59:48">
>>u.save
=> true
>>u.name
=> nil
>>u.name = true
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:01:27">
>>u.name.class
=> TrueClass
b.其他类型到integer
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:01:27">
>>u.age = "abc"
=> "abc"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:06:33">
>>u.age = 12.6
=> 12.6
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 12, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:07:14">
>>u.age = Date.new
=> Mon, 01 Jan -4712
>>u.save
u.save
=> true
?>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:08:17">
>>u.age = Time.now
=> Wed Apr 20 00:08:50 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1303229330, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:08:56">
>>u.age = ['a','b','c']
=> ["a", "b", "c"]
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:09:29">
>>u.age = {"a" => "aa","b" => "bb","c" => "cc"}
=> {"a"=>"aa", "b"=>"bb", "c"=>"cc"}
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:09:29">
>>u.age = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: nil, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:10:47">
>>u.age = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 1, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:11:13">
>>u.age = false
=> false
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-31", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:11:13">
c.其他类型到Date
>>u.birthday = 120
=> 120
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: nil, updated_at: "2011-04-19 16:31:49">
>>u.birthday = "abcdef"
=> "abcdef"
>>u.birthday
u.birthday
=> nil
?>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: nil, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:16:57">
>>u.birthday = "2011-01-25"
=> "2011-01-25"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-01-25", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:13:12">
>>u.birthday = "2011-02-25 17:28:32"
=> "2011-02-25 17:28:32"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-02-25", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:14:19">
>>u.birthday = Date.new
u.birthday = Date.new
=> Mon, 01 Jan -4712
?>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "-4712-01-01", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:15:28">
>>u.birthday = Time.now
=> Wed Apr 20 00:15:55 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: "2011-04-20 00:15:55", created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:15:59">
>>u.birthday = nil
=> nil
>>u.save
u.save
=> true
?>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: nil, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:16:57">
>>u.birthday = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: "2011-04-19 15:55:15", updated_at: "2011-04-19 16:20:33">
d.其他类型到time
>>u.created_at = "abc"
=> "abc"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = 12
=> 12
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.created_at = true
=> true
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: true, created_at: nil, updated_at: "2011-04-19 16:23:27">
>>u.birthday = false
=> false
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: false, created_at: nil, updated_at: "2011-04-19 16:30:37">
>>u.created_at = "2011-01-25"
=> "2011-01-25"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-01-25 00:00:00", updated_at: "2011-04-19 16:32:28">
>>u.created_at = "2011-02-25 17:28:32"
=> "2011-02-25 17:28:32"
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-02-25 17:28:32", updated_at: "2011-04-19 16:32:51">
>>u.created_at = Date.new
=> Mon, 01 Jan -4712
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "-4713-12-31 16:00:00", updated_at: "2011-04-19 16:33:15">
>>u.created_at = Time.now
=> Wed Apr 20 00:33:30 +0800 2011
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: "2011-04-19 16:33:30", updated_at: "2011-04-19 16:33:40">
>>u.created_at = nil
=> nil
>>u.save
=> true
>>u
=> #<User id: 2, name: true, sex: "男", age: 0, birthday: 120, created_at: nil, updated_at: "2011-04-19 16:34:29">
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Diaspora 功能特性列表
2013-05-10 14:25 1023Diaspora Function Features List ... -
rails scaffold getting the column list from existing table
2011-09-23 10:02 916之前一直找这个问题的解决办法，但一直没找到，在g上看到了一个人 ... -
ruby语法-传值
2011-08-23 16:49 1056=begin def test1(*a) p a.firs ... -
Rails 3 用 JQuery 替代 Prototype
2011-07-28 22:48 11371.进入到工程目录中修改Gemfile文件，加入如下行： g ... -
Generate a list of Rails controllers and methods
2011-07-01 17:40 856列出项目中的controler和他对应的actions： @c ... -
Ubuntu手动安装JDK
2011-05-20 16:03 572Ubuntu手动安装JDK 安装前可以查看一下jdk版本，进 ... -
bundler
2011-04-25 12:12 831Rails3里多了个Bundler工具。 它是一个Librar ... -
RubyGem version error: rack(1.0.0 not ~> 1.0.1)
2011-04-17 00:09 1360I have this error when I try to ... -
rubyonrails Restful Authentication 插件
2011-04-17 00:01 814restful_authentication是Rails的一个 ... -
XP.CMD命令大全
2011-04-17 00:00 638有关某个命令的详细信 ... -
几个有用的方法
2011-04-16 23:58 590hash.invert Returns a new hash ... -
Firefox键盘快捷方式
2011-04-16 23:55 1217Firefox键盘快捷方式 键盘快捷健 下面是 Mozil ... -
Ubuntu手动安装JDK
2011-04-16 23:53 733Ubuntu手动安装JDK 安装前可以查看一下jdk版本，进 ... -
字符转时间格式转换成时间对象
2011-04-16 23:52 763Time.parse("Wed, 23 Jan 20 ... -
使用Rails时遇到了服务器启动问题 script/server:3
2011-04-16 23:47 1290境 Windows Vista Home Premium c ... -
DoDirectPayment
2011-04-16 23:44 1001DoDirectPayment 1. DoDirectPay ... -
Rails异常处理
2011-04-16 23:43 963异常处理是开发过程中 ... -
ruby和rails中的回调函数
2011-04-16 23:41 1887Ruby中Class,Object,Module这三个类定义了 ... -
深入理解alias, alias_method和alias_method_chain
2011-04-16 23:41 890对 于alias, alias_method, alias_m ... -
Rails3:使用bundler管理gems
2011-04-16 23:39 1399bundler是一套为了 Rails3 所打造的全新 Gem ...
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