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How to bind to a PasswordBox in MVVM

...e security attack vector. The PasswordBox uses encrypted memory (of sorts) and the only way to access the password is through the CLR property. I would suggest that when accessing the PasswordBox.Password CLR property you'd refrain from placing it in any variable or as a value for any property. Ke...
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proper hibernate annotation for byte[]

I have an application using hibernate 3.1 and JPA annotations. It has a few objects with byte[] attributes (1k - 200k in size). It uses the JPA @Lob annotation, and hibernate 3.1 can read these just fine on all major databases -- it seems to hide the JDBC Blob vendor peculiarities (as it should do...
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When to use the different log levels

...he following convention: Trace - Only when I would be "tracing" the code and trying to find one part of a function specifically. Debug - Information that is diagnostically helpful to people more than just developers (IT, sysadmins, etc.). Info - Generally useful information to log (service start/s...
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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)

... to be recursive. That means the same thread can lock the same mutex twice and won't deadlock. Of course it also needs to unlock it twice, otherwise no other thread can obtain the mutex. Not all systems supporting pthreads also support recursive mutexes, but if they want to be POSIX conform, they h...
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Is “IF” expensive?

...can't, for the life of me, remember what exactly our teacher said that day and I'm hoping you would probably know. 16 Answe...
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Is there a best practice for generating html with javascript

...ce that returns an array of objects in JSON. I want to take those objects and populate a div with HTML. Let's say each object contains a url and a name. ...
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Get file size, image width and height before upload

How can I get the file size, image height and width before upload to my website, with jQuery or JavaScript? 7 Answers ...
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Git commit with no commit message

...providing a meaningful commit message is part of good development practice and good repository stewardship. The first line of the commit message is used all over the place within git; for more, read "A Note About Git Commit Messages". If you open Terminal.app, cd to your project directory, and git ...
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Cannot read configuration file due to insufficient permissions

...s (Network Services, Local System, etc.), should have permission to access and read web.config file. Update: This updated answer is same as above, but a little longer and simpler and improved. First of all: you don't have to change anything in your config file. It's OK. The problem is with window...
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Why is [1,2] + [3,4] = “1,23,4” in JavaScript?

...d for arrays. What happens is that Javascript converts arrays into strings and concatenates those.   Update Since this question and consequently my answer is getting a lot of attention I felt it would be useful and relevant to have an overview about how the + operator behaves in general also. So, h...