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Real-world examples of recursion [closed]

...l, and fixes itself quickly( Type A) , Except for one in 5 people ( We'll call these type B ) who become permanently infected with it and shows no symptoms and merely acts a spreader. This creates quite annoying waves of havoc when ever type B infects a multitude of type A. Your task is to track ...
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Explicitly set Id with Doctrine when using “AUTO” strategy

... New solution works fine only when ALL entities have id before insert. When one entity has ID and another one does not - new solution is failing. I use this function for import all my data: function createEntity(\Doctrine\ORM\EntityManager $em, $entity, $id ...
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What is a non-capturing group in regular expressions?

... Group 4: "sectetuer" ... So, if we apply the substitution string: $1_$3$2_$4 ... over it, we are trying to use the first group, add an underscore, use the third group, then the second group, add another underscore, and then the fourth group. The resulting string would be like the one below....
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Loaded nib but the 'view' outlet was not set

...s are right, but as I'm a newcomer it took me a little while to figure out all the steps to do that. Here's what worked for me: Open the XIB file causing problems Click on file's owner icon on the left bar (top one, looks like a yellow outlined box) If you don't see the right-hand sidebar, click o...
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How to remove all null elements from a ArrayList or String Array?

... Try: tourists.removeAll(Collections.singleton(null)); Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details. ...
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Android studio using > 100% CPU at all times - no background processes appear to be running

I've noticed Android Studio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well. ...
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Center image in div horizontally [duplicate]

.../* for the img inside your div */ display: block; margin: 0 auto; That's all. Note, that you'll also have to set an initial min-width for your outer div. share | improve this answer | ...
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How do I Search/Find and Replace in a standard string?

Is there a way to replace all occurrences of a substring with another string in std::string ? 9 Answers ...
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With arrays, why is it the case that a[5] == 5[a]?

... on here than elementary school arithmetic. The commutativity relies critically on the compiler recognizing which operand is a pointer (and to what size of object). To put it another way, (1 apple + 2 oranges) = (2 oranges + 1 apple), but (1 apple + 2 oranges) != (1 orange + 2 apples). ...
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Regular Expression For Duplicate Words

...)\s+\b\1\b/ A good selection of test strings can be found here: http://callumacrae.github.com/regex-tuesday/challenge1.html share | improve this answer | follow ...