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How to show math equations in general github's markdown(not github's blog)

...portant word being "secure" there, considering your question :). Indeed, allowing javascript to be executed would be a bit off of the MarkDown standard text-to-HTML contract. Moreover, everything that looks like a HTML tag is either escaped or stripped out. Tell me how to show math symbols in...
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Express: How to pass app-instance to routes from a different file?

I want to split up my routes into different files, where one file contains all routes and the other one the corresponding actions. I currently have a solution to achieve this, however I need to make the app-instance global to be able to access it in the actions. My current setup looks like this: ...
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Objective-C: Where to remove observer for NSNotification?

...his is obviously not a satisfying answer. I'd recommend, that you add a call [notificationCenter removeObserver: self] in method dealloc of those classes, which you intend to use as observers, as it is the last chance to unregister an observer cleanly. This will, however, only protect you against ...
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Rake just one migration

...n a single migration that changed and needed to be re-run independently of all other migrations. Fire up the console and do this: >> require 'db/migrate/your_migrations.rb' => ["YourMigrations"] >> YourMigrations.up => etc... as the migration runs >> YourMigration.down Mor...
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How do I get a background location update every n minutes in my iOS application?

...d with UIApplication:beginBackgroundTaskWithExpirationHandler: When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no time remaining to avoid the background task being kille...
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What is the difference between __dirname and ./ in node.js?

... Is there any way to reference the working directory of the app with fs? For example, I'm trying to load a file from the working directory /movies, but since my module is in a file /custom_modules/, __dirname tries to grab the movie from , /custom_modules/movies –...
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how to debug the js in jsfiddle

...ever using chrome dev tools. Press ctrl+shift+F and you can search through all the files in the source. share | improve this answer | follow | ...
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Sending event when AngularJS finished loading

...at's the best way to detect the finish of page loading/bootstrapping, when all directives done compiling/linking. 12 Answer...
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What's the need of array with zero elements?

... This is a way to have variable sizes of data, without having to call malloc (kmalloc in this case) twice. You would use it like this: struct bts_action *var = kmalloc(sizeof(*var) + extra, GFP_KERNEL); This used to be not standard and was considered a hack (as Aniket said), but it was s...
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How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?

... am currently making an app that will have multiple timers, which are basically all the same. 4 Answers ...