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What does O(log n) mean exactly?

...g that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials. ...
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Generating random numbers in Objective-C

...te the S-Boxes via arc4random_addrandom(). There is no need to call arc4random_stir() before using arc4random(), since arc4random() automatically initializes itself. EXAMPLES The following produces a drop-in replacement for the traditional rand() and random() functions using ...
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What is the most efficient way to deep clone an object in JavaScript?

... Native deep cloning It's called "structured cloning", works experimentally in Node 11 and later, and hopefully will land in browsers. See this answer for more details. Fast cloning with data loss - JSON.parse/stringify If you do not use Dates, funct...
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How does Dijkstra's Algorithm and A-Star compare?

...t; but it is a special case of the more general algorithm A*. It is not at all unusual (in fact, probably the norm) for special cases to be discovered first, and then subsequently be generalized . – Pieter Geerkens Sep 2 '13 at 15:37 ...
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How can I programmatically check whether a keyboard is present in iOS app?

... responder. I have a view controller with multiple child view controllers, all of which contain UITextFields. Using this method, i cannot tell from my parent view controller whether the keyboard is shown. The only reliable way is to use the notification method explained in the other answers ...
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How can I check if my python object is a number? [duplicate]

In Java the numeric types all descend from Number so I would use 5 Answers 5 ...
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How do I convert from int to String?

I'm working on a project where all conversions from int to String are done like this: 20 Answers ...
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New Array from Index Range Swift

... Pedantic point, but this isn't really casting the Slice to an Array, but rather creating a new array from a slice. A cast would use the as operator: numbers as Array which would result in an error. – j b Jun 10 '14 at 9...
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jQuery trigger file input

...e and top:-100px; and voilà it works. see http://jsfiddle.net/DSARd/1/ call it a hack. Hope that works for you. share | improve this answer | follow | ...
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How do I disable a Pylint warning?

... @Head Geek: 0.21.3, astng 0.20.3 and common 0.52.1 actually (the latest when I installed it, more recent than yours) – Chris Morgan Dec 3 '10 at 22:03 1 ...