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Using Caps Lock as Esc in Mac OS X

... Edit: As described in this answer, newer versions of MacOS now have native support for rebinding Caps Lock to Escape. Thus it is no longer necessary to install third-party software to achieve this. Here's my attempt at a comprehensive, visual walk-through answer (with links) of ho...
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Get the current displaying UIViewController on the screen in AppDelegate.m

...oller: UIViewController *vc = self.window.rootViewController; Once you know the root view controller, then it depends on how you have built your UI, but you can possibly find out a way to navigate through the controllers hierarchy. If you give some more details about the way you defined your app...
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How to call a JavaScript function from PHP?

... 'text' ); function someOtherFunctionYouWantToCall() { // stuff } Now, if you're dead-set on sending a function name from PHP back to the AJAX call, you can do that too. $.get( 'wait.php', {}, function(returnedData) { // Assumes returnedData has a javascript function ...
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Perform .join on value in array of objects

...tring, and so a.name is undefined) isn't treated as an object. Edit: I've now refactored it further to this: x.reduce(function(a, b) {return a + ["", ", "][+!!a.length] + b.name;}, ""); which I believe is cleaner as a is always a string, b is always an object (due to the use of the optional ini...
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Why are there two kinds of functions in Elixir?

...lt; 0 -> x - y y -> x + y end fun.(2) #=> 3 fun.(-2) #=> 3 Now, let's try something different. Let's try to define different clauses expecting a different number of arguments: fn x, y -> x + y x -> x end ** (SyntaxError) cannot mix clauses with different arities in functio...
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How to convert currentTimeMillis to a date in Java?

I have milliseconds in certain log file generated in server, I also know the locale from where the log file was generated, my problem is to convert milliseconds to date in specified format. The processing of that log is happening on server located in different time zone. While converting to "SimpleD...
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How to extract epoch from LocalDate and LocalDateTime?

... = time.toEpochSecond(ZoneOffset.UTC) for UTC cases, or where you already know the timezone, or long epoch = time.toEpochSecond(ZoneId.systemDefault()); if you want to go that route. – Marcus Mar 19 '19 at 1:30 ...
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A fast method to round a double to a 32-bit int explained

...le is represented like this: and it can be seen as two 32-bit integers; now, the int taken in all the versions of your code (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa. Now, to the magic num...
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pip issue installing almost any library

...ll to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neither is getting the job done. ...
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How set background drawable programmatically in Android

...UPDATE: getDrawable(int ) deprecated in API level 22 getDrawable(int ) is now deprecated in API level 22. You should use the following code from the support library instead: ContextCompat.getDrawable(context, R.drawable.ready) If you refer to the source code of ContextCompat.getDrawable, it give...