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Convert a series of parent-child relationships into a hierarchical tree?

...sic recursive function to parse the child/parent pairs to a tree structure and another recursive function to print it out. Only one function would suffice but here's two for clarity (a combined function can be found at the end of this answer). First initialize the array of child/parent pairs: $tre...
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Why can't Python parse this JSON data?

...ata["maps"][0]["id"] data["masks"]["id"] data["om_points"] Try those out and see if it starts to make sense. share | improve this answer | follow | ...
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How to force use of overflow menu on devices with menu button

...tually prevented by design. According to the Compatibility Section of the Android Design Guide, "...the action overflow is available from the menu hardware key. The resulting actions popup... is displayed at the bottom of the screen." You'll note in the screenshots, phones with a physical menu b...
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Is there a “not in” operator in JavaScript for checking object properties?

...se statement just to use the else portion... Just negate your condition, and you'll get the else logic inside the if: if (!(id in tutorTimes)) { ... } share | improve this answer | ...
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Structs in Javascript

... The only difference between object literals and constructed objects are the properties inherited from the prototype. var o = { 'a': 3, 'b': 4, 'doStuff': function() { alert(this.a + this.b); } }; o.doStuff(); // displays: 7 You could make a struct factor...
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How to obtain a Thread id in Python?

I have a multi-threading Python program, and a utility function, writeLog(message) , that writes out a timestamp followed by the message. Unfortunately, the resultant log file gives no indication of which thread is generating which message. ...
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How to get form field's id in Django?

... This answer did not work for me, and Will's above worked perfectly. I tried them back to back with instant feedback. – eficker Oct 30 '13 at 21:48 ...
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Difference between and

I'm learning Spring 3 and I don't seem to grasp the functionality behind <context:annotation-config> and <context:component-scan> . ...
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Cast an instance of a class to a @protocol in Objective-C

... edited Mar 21 '17 at 21:08 Alexander Abakumov 9,59199 gold badges6363 silver badges9999 bronze badges answered Nov 26 '10 at 1:47 ...
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On a CSS hover event, can I change another div's styling? [duplicate]

...e adjacent sibling combinator (+). If there are other elements between #a and #b, you can use this: http://jsfiddle.net/u7tYE/1/ #a:hover ~ #b { background: #ccc } <div id="a">Div A</div> <div>random other elements</div> <div>random other elements</div> &lt...