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What does the “__block” keyword mean?

What exactly does the __block keyword in Objective-C mean? I know it allows you to modify variables within blocks, but I'd like to know... ...
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How to change the URI (URL) for a remote Git repository?

...pull origin; git push origin; gitx) everything seems in order. And yes, I know it is bad form to mess with git internals. share | improve this answer | follow ...
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How do I grep for all non-ASCII characters?

... no longer supports PCRE ("Perl-compatible regular expressions") as Darwin now uses BSD grep instead of GNU grep. An alternative to installing the dupes library is to install pcre instead: brew install pcre... as part of this, you will get the pcregrep utility, which you can use as follows: pcregrep...
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UISegmentedControl below UINavigationbar in iOS 7

...e same as the navigation bar. That's because they are not the same bar. Now to remove the hairline. The "hairline" is an UIImageView that is a subview of the navigation bar. You can find it and set it as hidden. This is what Apple does in their native calendar app, for example, as well as the sto...
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How can I run code on a background thread on Android?

...k or update UI with data retrieved from background process. If you don't know how to start here is nice tutorial: Understanding AsyncTask – Once and Forever Note: Also there is possibility to use IntentService with ResultReceiver that works as well. ...
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How do I restore a missing IIS Express SSL Certificate?

...air" option on IIS Express, the certificate has been reinstalled and I can now launch IIS Express sites using HTTPS. The certificate is back: And I can now launch the IIS Express site using HTTPS: share | ...
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Difference between Build Solution, Rebuild Solution, and Clean Solution in Visual Studio?

... use partially-built bits of the project if they haven't changed (I don't know how far it takes this) Rebuild solution will clean and then build the solution from scratch, ignoring anything it's done before. The difference between this and "Clean, followed by Build" is that Rebuild will clean-then-b...
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How do I sort a vector of pairs based on the second element of the pair?

... c++14, the best solution is very easy to write thanks to lambdas that can now have parameters of type auto. This is my current favorite solution std::sort(v.begin(), v.end(), [](auto &left, auto &right) { return left.second < right.second; }); Just use a custom comparator (it's ...
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Using Chrome, how to find to which events are bound to an element

..., right click over function and select 'Show function definition' You will now see the Event binding code Click on the 'Pretty print' button for a more readable view of the code share | improve thi...
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django change default runserver port

... I actually started using supervisor for this now, that makes it even easier to manage. :-) But yours is probably the cleanest solution other than writing a dedicated runserver script. – jonny May 29 '14 at 16:14 ...