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What is the most robust way to force a UIView to redraw?

I have a UITableView with a list of items. Selecting an item pushes a viewController that then proceeds to do the following. from method viewDidLoad I fire off a URLRequest for data that is required by on of my subviews - a UIView subclass with drawRect overridden. When the data arrives from the clo...
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If threads share the same PID, how can they be identified?

...e kernel (looking from below) calls a PID. In the kernel, each thread has it's own ID, called a PID (although it would possibly make more sense to call this a TID, or thread ID) and they also have a TGID (thread group ID) which is the PID of the thread that started the whole process. Simplisticall...
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How to use `subprocess` command with pipes

I want to use subprocess.check_output() with ps -A | grep 'process_name' . I tried various solutions but so far nothing worked. Can someone guide me how to do it? ...
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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)

...hing you can do is leave out the action attribute altogether. If you leave it out, the form will be submitted to the document's address, i.e. the same page. It is also possible to leave it empty, and any browser implementing HTML's form submission algorithm will treat it as equivalent to the documen...
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Is Big O(logn) log base e?

...data structures, I see the Big O notation is typically noted as O(logn). With a lowercase 'l' in log, does this imply log base e (n) as described by the natural logarithm? Sorry for the simple question but I've always had trouble distinguishing between the different implied logarithms. ...
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What version of Visual Studio is Python on my computer compiled with?

...follow | edited Sep 15 '19 at 18:52 answered Apr 20 '10 at 16:34 ...
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Getting Java version at runtime

... a Java bug in JDK 1.5 which was fixed in 1.6. I'm using the following condition: 12 Answers ...
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C# “internal” access modifier when doing unit testing

I'm new to unit testing and I'm trying to figure out if I should start using more of internal access modifier. I know that if we use internal and set the assembly variable InternalsVisibleTo , we can test functions that we don't want to declare public from the testing project. This makes me thi...
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Why does !{}[true] evaluate to true in JavaScript?

...cause plain {}[true] is parsed as an empty statement block (not an object literal) followed by an array containing true, which is true. On the other hand, applying the ! operator makes the parser interpret {} as an object literal, so the following {}[true] becomes a member access that returns undef...
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C#: Assign same value to multiple variables in single statement

Is there any way (just out of curiosity because I came across multiple same-value assignments to multiple variables today) in C# to assign one value to multiple variables at once in a single statements? ...