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What is the difference between mutex and critical section?

... The 'fast' Windows equal of critical selection in Linux would be a futex, which stands for fast user space mutex. The difference between a futex and a mutex is that with a futex, the kernel only becomes involved when arbitration is required, so you save the over...
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How do you set a default value for a MySQL Datetime column?

...test (str) values ("demo"); Query OK, 1 row affected (0.00 sec) mysql> select * from test; +------+---------------------+ | str | ts | +------+---------------------+ | demo | 2008-10-03 22:59:52 | +------+---------------------+ 1 row in set (0.00 sec) mysql> **CAVEAT: IF...
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Storing images in SQL Server?

...n stay lean and mean and very efficient, assuming you don't always need to select the employee photo, too, as part of your queries. For filegroups, check out Files and Filegroup Architecture for an intro. Basically, you would either create your database with a separate filegroup for large data stru...
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onMeasure custom view explanation

... there's absolutely no need for you to override it. Devunwired code (the selected and most voted answer here) is almost identical to what the SDK implementation already does for you (and I checked - it had done that since 2009). You can check the onMeasure method here : protected void onMeasure...
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Get nth character of a string in Swift programming language

...t libraries and system components. The correct interpretation should be selected according to the use case and the APIs involved, so String cannot be subscripted with an integer. Swift provides several different ways to access the character data stored inside strings. String.ut...
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How to model type-safe enum types?

...urns an Iterator, map, flatMap, filter, etc. This answer is essentially a selected parts from this article in my blog. share | improve this answer | follow | ...
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Can anybody find the TFS “Unshelve” option in Visual Studio 2012?

...ck on the menu "Tools > Customize". This opens the "Customize" dialog. Select the "Commands" tab. Choose the "Context menu" radio button in the "Choose a menu or toolbar to rearrange" section. Choose "Project and Solution Context Menus | Solution | Source Control" from the drop down. Click the "...
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sed: print only matching group

... -d " " -f 6-7 Will result in output of: 2 3.4 -d sets the delimiter -f selects the range of 'fields' to output, in this case, it's the 6th through 7th chunks of the original string. You can also specify the range as a list, such as 6,7. ...
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How can I import a database with MySQL from terminal?

...mmand prompt (mysql>), then simply type source full_path_of_file (note: select database by command USE DATABASE_NAME before import). – Ankit Sharma May 28 '14 at 8:15 3 ...
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Start/Stop and Restart Jenkins service on Windows

... To run cmd in admin mode 1. Open task manager 2. File - New Task 3. Select check box "Create task with admin previleges" – Amit Jain Jul 19 '18 at 6:01 ...