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What are the main performance differences between varchar and nvarchar SQL Server data types?

I'm working on a database for a small web app at my school using SQL Server 2005 . I see a couple of schools of thought on the issue of varchar vs nvarchar : ...
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JSF vs Facelets vs JSP [duplicate]

...nerating web pages from templates - these can be used as the View in a JSF application, but also separately from JSF. Facelets are an alternative view technology based on pure XML templates (no scriptlets) which was introduced with Version 2 of the JSF standard. They can only be used in a JSF applic...
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what is reverse() in Django

...e reverse() in place of other more straightforward, arguably more pythonic approaches in template-view binding, and what are some legitimate reasons for the popularity of this "redirect via reverse() pattern" in Django routing logic. One key benefit is the reverse construction of a url, as others h...
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How to print a debug log?

...lso set the value of error_log to 'php://stdout' when debugging a console app and have the error messages appear straight to console, ie: error_log("You messed up!", 3, "php://stdout"); – stefgosselin May 21 '11 at 12:38 ...
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Disable a Button

... If you want the button to stay static without the "pressed" appearance: // Swift 2 editButton.userInteractionEnabled = false // Swift 3 editButton.isUserInteractionEnabled = false Remember: 1) Your IBOutlet is --> @IBOutlet weak var editButton: UIButton! 2) Code above go...
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usr/bin/ld: cannot find -l

...ment work.) For other architectures (most notably RPM) similar procedures apply, though the details will be different. share | improve this answer | follow | ...
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Logging errors in ASP.NET MVC

I'm currently using log4net in my ASP.NET MVC application to log exceptions. The way I'm doing this is by having all my controllers inherit from a BaseController class. In the BaseController's OnActionExecuting event, I log any exceptions that may have occurred: ...
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how to show progress bar(circle) in an activity having a listview before loading the listview with d

...derProgress.setVisibility(View.GONE); } EDIT: This is how it looks in my app while loading one of several ListViews share | improve this answer | follow | ...
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A top-like utility for monitoring CUDA activity on a GPU

... Use argument "--query-compute-apps=" nvidia-smi --query-compute-apps=pid,process_name,used_memory --format=csv for further help, please follow nvidia-smi --help-query-compute-app ...
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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?

.../54-debugging-with-ruby-debug http://www.sitepoint.com/article/debug-rails-app-ruby-debug/ http://www.datanoise.com/articles/2006/7/12/tutorial-on-ruby-debug It's incredibly helpful! share | impro...