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Count immediate child div elements using jQuery
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I was just wondering on Friday how to count table columns with jQuery. I'll have to try a similar approach: $('#table > th').size().
– Jim Schubert
Dec 20 '09 at 22:16
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How to Select Every Row Where Column Value is NOT Distinct
...o use Inner Join as a better option to this problem.
Considering the same table this could give the result
SELECT EmailAddress, CustomerName FROM Customers as a
Inner Join Customers as b on a.CustomerName <> b.CustomerName and a.EmailAddress = b.EmailAddress
For still better results I wou...
How does Django's Meta class work?
...odel. It defines such things as available permissions, associated database table name, whether the model is abstract or not, singular and plural versions of the name etc.
Short explanation is here: Django docs: Models: Meta options
List of available meta options is here: Django docs: Model Meta op...
Using a strategy pattern and a command pattern
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I'm including an encapsulation hierarchy table of several of the GoF design patterns to help explain the differences between these two patterns. Hopefully it better illustrates what each encapsulates so my explanation makes more sense.
First off, the hierarchy list...
win7 安装项目管理工具redmine2.5.1 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...服务
b. 然后在my.ini文件中的[mysqld]下面一行添加skip_grant_tables (加上这句话，my.ini一般在mysql的data目录）
c. 再次输入mysql -u root -p ,这时cmd将切换成mysql模式
输入: UPDATE user SET Password=PASSWORD('newpassword') where USER='root';（注意...
Performing Inserts and Updates with Dapper
...time you can do the following
val = "my value";
cnn.Execute("insert into Table(val) values (@val)", new {val});
cnn.Execute("update Table set val = @val where Id = @id", new {val, id = 1});
etcetera
See also my blog post: That annoying INSERT problem
Update
As pointed out in the comments, t...
What are the differences between “=” and “
...expression). In fact, ?Syntax in R gives the following operator precedence table, from highest to lowest:
…
‘-> ->>’ rightwards assignment
‘<- <<-’ assignment (right to left)
‘=’ assignment (right to left)
…
But is this the on...
What is the difference between a pseudo-class and a pseudo-element in CSS?
...neven rows which aren't dividable by 5 white and every other row magenta.
table tr:nth-child(2n) td{
background-color: #ccc;
}
table tr:nth-child(2n+1) td{
background-color: #fff;
}
table tr:nth-child(2n+1):nth-child(5n) td{
background-color: #f0f;
}
Pseudo-elements
Official descripti...
When to Redis? When to MongoDB? [closed]
... need to change your schema quickly.
Because there is no schema! Altering tables in traditional, relational DBMS is painfully expensive and slow. MongoDB solves this problem by not making a lot of assumptions on your underlying data. Nevertheless, it tries to optimize as far as possible without req...
How to restore to a different database in sql server?
...M, COPY_ONLY, FORMAT, INIT, STATS = 100;
-- Get the backup file list as a table variable
DECLARE @BackupFiles TABLE(LogicalName nvarchar(128),PhysicalName nvarchar(260),Type char(1),FileGroupName nvarchar(128),Size numeric(20,0),MaxSize numeric(20,0),FileId tinyint,CreateLSN numeric(25,0),DropLSN n...