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How do I determine whether my calculation of pi is accurate?

I was trying various methods to implement a program that gives the digits of pi sequentially. I tried the Taylor series method, but it proved to converge extremely slowly (when I compared my result with the online values after some time). Anyway, I am trying better algorithms. ...
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jQuery - Get Width of Element when Not Visible (Display: None)

It seems like in jQuery when an element is not visible width() returns 0. Makes sense, but I need to get the width of a table in order to set the width of the parent before I show the parent. ...
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Is there any overhead to declaring a variable within a loop? (C++)

...laring a variable inside a loop and I was wondering what's wrong until he cited performance as the reason not to do so and I was like "WTF!?". – Mehrdad Afshari Jun 11 '09 at 19:35 ...
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Is it possible to make the -init method private in Objective-C?

I need to hide (make private) the -init method of my class in Objective-C. 9 Answers ...
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What is the difference between exit and return? [duplicate]

What is difference between return and exit statement in C programming when called from anywhere in a C program? 4 Answers ...
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Are there any O(1/n) algorithms?

Are there any O(1/n) algorithms? 32 Answers 32 ...
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Pairs from single list

...pairs. I was wondering which would be the pythonic and efficient way to do it, and found this on Google: 9 Answers ...
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Generating PDF files with JavaScript

... into PDF files from a web page and I was hoping I could do this entirely within JavaScript. I need to be able to draw text, images and simple shapes. I would love to be able to do this entirely in the browser. ...
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Where is the C auto keyword used?

... about the auto keyword and in the course of time I actually forgot what it is. It is defined as: 9 Answers ...
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Should I pass a shared_ptr by reference? [duplicate]

...general, you should pass the shared pointer as a straight copy. This gives it its intended semantics: Every scope that contains a copy of the shared pointer keeps the object alive by virtue of its "share" in the ownership. The only reason not to always pass by value is that copying a shared pointer...