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Creating a blurring overlay view

...this effect. This is a native API that has been fine-tuned for performance and great battery life, plus it's easy to implement. Swift: //only apply the blur if the user hasn't disabled transparency effects if !UIAccessibility.isReduceTransparencyEnabled { view.backgroundColor = .clear let...
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Git/GitHub can't push to master

I am new to Git/GitHub and ran into an issue. I created a test project and added it to the local repository. Now I am trying to add files/project to the remote repository. ...
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What is mutex and semaphore in Java ? What is the main difference?

What is mutex and semaphore in Java ? What is the main difference ? 11 Answers 11 ...
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How do I calculate the date in JavaScript three months prior to today?

...tation needed. But more than half the time, that is 31 days ago, not 30. And if today is the 31st of the month (and it isn't August or Decemeber), that day of the month doesn't exist in the previous month. Interestingly, Google agrees with JavaScript if you ask it what day is one month before ano...
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Change SVN repository URL

... may follow instructions from the TortoiseSVN Manual. If using the SVN command line interface, refer to this section of SVN's documentation. The command should look like this: svn relocate svn://sub.someaddress.com.tr/project Keep using /project given that the actual contents of your repository pro...
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Rotating videos with FFmpeg

...ut.mov For the transpose parameter you can pass: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip Use -vf "transpose=2,transpose=2" for 180 degrees. Make sure you use a recent ffmpeg version from here (a static build wi...
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How to maintain a Unique List in Java?

... no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1.equals(e2), and at most one null element. As implied by its name, this interface models the mathematical set abstraction. Note: Great care must be exercised if mutable objects are used as set elements...
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?

... NOTE: PyPy is more mature and better supported now than it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information. PyPy, as others have been quick to mention, has tenuous support for C extensions. It has...
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Is there a way to check if int is legal enum in C#?

I've read a few SO posts and it seems most basic operation is missing. 8 Answers 8 ...
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How to replace spaces in file names using a bash script

...end a safe solution to recursively replace spaces with underscores in file and directory names starting from a given root directory? For example: ...