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iPhone viewWillAppear not firing

... message to your view controller before you add it as a subview. (There is one BOOL parameter which tells the view controller if it's being animated to appear or not.) [myViewController viewWillAppear:NO]; Look at RootViewController.m in the Metronome example. (I actually found Apple's example ...
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How to Define Callbacks in Android?

...ss that takes the callback class Worker { MyCallback callback; void onEvent() { callback.callbackCall(); } } // Option 1: class Callback implements MyCallback { void callbackCall() { // callback code goes here } } worker.callback = new Callback(); // Option 2: worker...
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Ruby Hash to array of values

... +1 (Dazzled amazingly after I tried your code) I spent one day with no luck removing the index using many methods... All I can say thank you very much!!! :D – Romans 8.38-39 Jan 8 '14 at 3:19 ...
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Ruby Array find_first object?

...omething in the Array documentation? I have an array which contains up to one object satisfying a certain criterion. I'd like to efficiently find that object. The best idea I have from the docs is this: ...
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How do I specify unique constraint for multiple columns in MySQL?

... Like me, if anyone else found this from search engines... and to answer Clizzin's question about if ON DUPLICATE KEY will work with a composite key - it absolutely will, however it will require some minor adjustments to the syntax. see stac...
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More elegant “ps aux | grep -v grep”

...rary string, but not for a username, e.g. ps aux | grep '[r]oot' . Does anyone know why? – kxsong Oct 1 '14 at 19:41 2 ...
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How do I run all Python unit tests in a directory?

...ed all_test.py that will, you guessed it, run all files in the aforementioned test form and return the result. I have tried two methods so far; both have failed. I will show the two methods, and I hope someone out there knows how to actually do this correctly. ...
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Best practices for styling HTML emails [closed]

...n as many email clients as you can get your hands on, or use Litmus as someone else suggested above! (credit to Jim) EDIT : Mail chimp have done a great job by making this tool available to the community. It applies your CSS classes to your html elements inline for you! ...
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Bootstrap 3 Navbar Collapse

...trap 4 It's a native functionality: https://getbootstrap.com/docs/4.0/components/navbar/#responsive-behaviors You have to use .navbar-expand{-sm|-md|-lg|-xl} classes: <nav class="navbar navbar-expand-md navbar-light bg-light"> Bootstrap 3 @media (max-width: 991px) { .navbar-header { ...
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How to read all files in a folder from Java?

... If anyone is still looking for the try catch lambda topic the url of my blog has been changed -> razem.io/blog/y2015/0819_try_catch_lambda.html – Julian Pieles Dec 2 '15 at 10:17 ...