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Empty arrays seem to equal true and false at the same time

...t (Array is instance of Object in JS) will check if the object is present, and returns true/false. When you call if (arr == false) you compare values of this object and the primitive false value. Internally, arr.toString() is called, which returns an empty string "". This is because toString cal...
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iPad/iPhone hover problem causes the user to double click a link

...sites I built times ago, that use jquery mouse events...I just got an ipad and i noticed that all the mouse over events are translated in clicks...so for instance i have to do two clicks instead of one..(the first hover, than the actual click) ...
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Using sphinx with Markdown instead of RST

...o approach that without developing a parser from scratch: You could cheat and write a "parser" that uses Pandoc to convert markdown to RST and pass that to the RST parser :-). You can use an existing markdown->XML parser and transform the result (using XSLT?) to the docutils schema. You could ...
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Does functional programming replace GoF design patterns?

Since I started learning F# and OCaml last year, I've read a huge number of articles which insist that design patterns (especially in Java) are workarounds for the missing features in imperative languages. One article I found makes a fairly strong claim : ...
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How to change the Push and Pop animations in a navigation based app

I have a navigation based application and I want to change the animation of the push and pop animations. How would I do that? ...
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View's getWidth() and getHeight() returns 0

I am creating all of the elements in my android project dynamically. I am trying to get the width and height of a button so that I can rotate that button around. I am just trying to learn how to work with the android language. However, it returns 0. ...
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Is recursion a feature in and of itself?

... To answer your specific question: No, from the standpoint of learning a language, recursion isn't a feature. If your professor really docked you marks for using a "feature" he hadn't taught yet, that was wrong. Reading between the lines, one possibility is that by using r...
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Difference between == and ===

In swift there seem to be two equality operators: the double equals ( == ) and the triple equals ( === ), what is the difference between the two? ...
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Hashset vs Treeset

I've always loved trees, that nice O(n*log(n)) and the tidiness of them. However, every software engineer I've ever known has asked me pointedly why I would use a TreeSet . From a CS background, I don't think it matters all that much which you use, and I don't care to mess around with hash functi...
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How to install CocoaPods?

I referred too many links and tried, but had no success. If any one has an idea then please please share with me. I read cocoa pods documents and many times tried to install but always failed because of the starting steps. I found one error whereby I can't install gems first. Can anyone give me the ...