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How do you round a floating point number in Perl?

How can I round a decimal number (floating point) to the nearest integer? 13 Answers ...
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Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space

I'm looking for a neat RegEx solution to replace 8 Answers 8 ...
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How do I base64 encode (decode) in C?

I have binary data in an unsigned char variable. I need to convert them to PEM base64 in c. I looked in openssl library but i could not find any function. Does any body have any idea? ...
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How do I get an object's unqualified (short) class name?

How do I check the class of an object within the PHP name spaced environment without specifying the full namespaced class. ...
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Designing function f(f(n)) == -n

A question I got on my last interview: 118 Answers 118 ...
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In php, is 0 treated as empty?

Code will explain more: 18 Answers 18 ...
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How to check BLAS/LAPACK linkage in NumPy and SciPy?

I am builing my numpy/scipy environment based on blas and lapack more or less based on this walk through. 5 Answers ...
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CSS: bolding some text without changing its container's size

I have a horizontal navigation menu, which is basically just a <ul> with the elements set side-by-side. I do not define width, but simply use padding, because I would like the widths to be defined by the width of the menu item. I bold the currently-selected item. ...
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How do I create an empty array/matrix in NumPy?

I can't figure out how to use an array or matrix in the way that I would normally use a list. I want to create an empty array (or matrix) and then add one column (or row) to it at a time. ...
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How to draw a rounded Rectangle on HTML Canvas?

I found that there are only can fill rectangle, but no rounded corner one, how can I do that? 12 Answers ...