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Always pass weak reference of self into block in ARC?

...nce to it. ad infinitum Thus, those two objects will just hang around in memory for the life of the program even though they should, if everything were working properly, be deallocated. So, what we're worried about is retain cycles, and there's nothing about blocks in and of themselves that crea...
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Why is 'false' used after this simple addEventListener function?

... According to MDN Web Docs, the third parameter is: useCapture If true, useCapture indicates that the user wishes to initiate capture. After initiating capture, all events of the specified type will be dispatched to the registered listener before being ...
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SQL statement to select all rows from previous day

I am looking for a good SQL Statement to select all rows from the previous day from one table. The table holds one datetime column. I am using SQL Server 2005. ...
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How to change text transparency in HTML/CSS?

I'm very new to HTML/CSS and I'm trying to display some text as like 50% transparent. So far I have the HTML to display the text with full opacity ...
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Installing SciPy and NumPy using pip

...and you'll need to fix/add the correct directories that it incorrectly assumes as well. The third thing you may need is to yum install numpy-f2py or the equivalent. Oh, yes and lastly, you may need to yum install gcc-gfortran as the libraries above are Fortran source. ...
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JavaScript chop/slice/trim off last character in string

... @Kheu - the slice notation is much cleaner to me. I was previously using the substring version. Thanks! – Matt Ball Apr 13 '10 at 14:09 33 ...
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Parsing JSON array into java.util.List with Gson

I have a JsonObject named "mapping" with the following content: 5 Answers 5 ...
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Is there a way to detect if a browser window is not currently active?

...Since originally writing this answer, a new specification has reached recommendation status thanks to the W3C. The Page Visibility API (on MDN) now allows us to more accurately detect when a page is hidden to the user. document.addEventListener("visibilitychange", onchange); Current browser sup...
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What's the use of Jade or Handlebars when writing AngularJs apps

... full stack applications, and completely new to Angular, so I was hoping somebody can put the record straight for me here. ...
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Multiple arguments to function called by pthread_create()?

I need to pass multiple arguments to a function that I would like to call on a separate thread. I've read that the typical way to do this is to define a struct, pass the function a pointer to that, and dereference it for the arguments. However, I am unable to get this to work: ...