composite

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Is this design pattern logical?

The following C# is abstract so you can see the structure of what I am trying to accomplish This is the Composite (GoF) Pattern I am using to represent a FileSystem tree[详细]

2023-01-30 00:42 分类：问答
Using the composite design pattern to operate on objects of different type, is there a way to prevent an object from being operated on more than once?

I\'d like to use the Composite design pattern in C++ to be able to create and operate on groups of objects. A problem I\'ve encountered is that since leaves and composites are treated the same, and co[详细]

2023-01-29 16:41 分类：问答
MySQL composite indexes and operator BETWEEN

I have a question about this query: SELECT * FROM runs WHERE (NOW() BETWEEN began_at AND finished_at)[详细]

2023-01-28 14:06 分类：问答
PHP ORM with full composite primary/foreign key support

I\'m looking for PHP5 ORM which fully supports composite (multi-column) relations based on composite primary keys and foreign keys.[详细]

2023-01-24 02:34 分类：问答
ViewState["sample"] Variable not retaining value on postback in a composite control

I have created a composite control with sample details as follows. Basically, the first time on page load the control sets a view state variable and the problem is that on post back (when the button i[详细]

2023-01-20 06:47 分类：问答
Composite pattern in Swing

This is basically a architectural question. I want to implement composite pattern in handling Swing components; that is, I want to combine several components with their listeners and logic behind a s[详细]

2023-01-20 02:00 分类：问答
Composite Index vs. INCLUDE Covering Index in SQL Server

I understand that Composite Indexes are alwa开发者_开发知识库ys used Left to Right (e.g. if an Index was on City, State, WHERE City = \"Blah\" or WHERE City = \"Blah\" AND State = \"AA\" would work fi[详细]

2023-01-18 22:55 分类：问答
SWT Composite maximum size

I have a ScrolledComposite, the contents of which are being truncated. I have Googled and a开发者_高级运维m aware that it is a known issue on Windows.[详细]

2023-01-17 23:24 分类：问答
Postgresql function returns composite - how do I access composite values as separate columns?

I have a Postgresql function which returns a composite type defined开发者_如何学C as (location TEXT, id INT). When I run \"SELECT myfunc()\", My output is a single column of type text, formatted as:[详细]

2023-01-17 21:26 分类：问答
Is it possible to have multiple composite (aka "many-to-many", ManyToMany) joins that don't make the result set huge

Situation: Table book is associated with one or more authors via the _author_book table.It is also associated with one or more genres via the _book_genre table.[详细]

2023-01-17 01:51 分类：问答