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When should I use OWIN Katana?
I am new to OWIN and Katana. I really don't get why I should use OWIN, while I can use IIS . To simplify, my question is: What do I lose if I skip learning OWIN and use IIS for my websites?
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Difference between DTO, VO, POJO, JavaBeans?
...eans are reusable software components for Java that can be manipulated visually in a builder tool. Practically, they are classes written in the Java programming language conforming to a particular convention. They are used to encapsulate many objects into a single object (the bean), so that they can...
How to search a specific value in all tables (PostgreSQL)?
... at 11:55
Mike Sherrill 'Cat Recall'Mike Sherrill 'Cat Recall'
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Postgresql - change the size of a varchar column to lower length
I have a question about the ALTER TABLE command on a really large table (almost 30 millions rows).
One of its columns is a varchar(255) and I would like to resize it to a varchar(40) .
Basically, I would like to change my column by running the following command:
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Removing all unused references from a project in Visual Studio projects
... wondered if it possible within various Visual Studio versions to automatically remove all references from a project that were never been used?
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Should I instantiate instance variables on declaration or in the constructor?
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There is no difference - the instance variable initialization is actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constru...
Configuring Log4j Loggers Programmatically
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You can add/remove Appender programmatically to Log4j:
ConsoleAppender console = new ConsoleAppender(); //create appender
//configure the appender
String PATTERN = "%d [%p|%c|%C{1}] %m%n";
console.setLayout(new PatternLayout(PATTERN));
console.setThresh...
MySQL, update multiple tables with one query
...ookID is very important, without it The Books table update would happen to all rows and not only for the row with the specified id. Some lessons are learned the hard way, this one was learned in the terrifing way.
– nheimann1
Mar 24 '15 at 15:06
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Search for all files in project containing the text 'querystring' in Eclipse
...rk in Dreamweaver and Eclipse when developing. I think Dreamweaver has a really nice search where you can search for text within all files of your current project.
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Find all files with name containing string
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Use find:
find . -maxdepth 1 -name "*string*" -print
It will find all files in the current directory (delete maxdepth 1 if you want it recursive) containing "string" and will print it on the screen.
If you want to avoid file containing ':', you can type:
find . -maxdepth 1 -name "*string*...