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Difference between a User and a Login in SQL Server

...ly don't mess with. One of them that has me confused is the area of Logins and Users. Seems like it should be a pretty simple topic... ...
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How to exit if a command failed?

I am a noob in shell-scripting. I want to print a message and exit my script if a command fails. I've tried: 8 Answers ...
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Unable to set data attribute using jQuery Data() API

...ata- attributes are pulled in the first time the data property is accessed and then are no longer accessed or mutated (all data values are then stored internally in jQuery) This was also covered on Why don't changes to jQuery $.fn.data() update the corresponding html 5 data-* attributes? The demo...
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How big should a UIBarButtonItem image be?

I'm looking to create my own custom Sort By Date and Sort By Number buttons that I plan on placing in the navigation bar as the right button. ...
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How can prepared statements protect from SQL injection attacks?

... The idea is very simple - the query and the data are sent to the database server separately. That's all. The root of the SQL injection problem is in the mixing of the code and the data. In fact, our SQL query is a legitimate program. And we are creating s...
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Swipe to Delete and the “More” button (like in Mail app on iOS 7)

... "Not called for edit actions using UITableViewRowAction - the action's handler will be invoked instead." However, the swiping doesn't work without it. Even if the method stub is blank, it still needs it, for now. This is most obviously a bug in beta 2. Sources https://twitter.com/marksands/...
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How to use OpenSSL to encrypt/decrypt files?

I want to crypt and decrypt one file using one password. 10 Answers 10 ...
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“Cloning” row or column vectors

... into a 2D array with length 1 in the first axis (vertical on your screen) and length 3 in the second axis (horizontal on your screen). Transposing then makes it have length 3 in the first axis and length 1 in the second axis. A tile shape of (1, 3) copies this column over three times, which is why ...
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Sending a mail from a linux shell script

I want to send an email from a Linux Shell script. What is the standard command to do this and do I need to set up any special server names? ...
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Difference between Lookup() and Dictionary(Of list())

...trying to wrap my head around which data structures are the most efficient and when / where to use which ones. 6 Answers ...