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What is “:-!!” in C code?
I bumped into this strange macro code in /usr/include/linux/kernel.h :
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How do I write a “tab” in Python?
Let's say I have a file. How do I write "hello" TAB "alex"?
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how to draw smooth curve through N points using javascript HTML5 canvas?
For a drawing application, I'm saving the mouse movement coordinates to an array then drawing them with lineTo. The resulting line is not smooth. How can I produce a single curve between all the gathered points?
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What characters are valid for JavaScript variable names?
Which characters can be used for naming a JavaScript variable?
12 Answers
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Divide a number by 3 without using *, /, +, -, % operators
How would you divide a number by 3 without using * , / , + , - , % , operators?
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Efficient way to determine number of digits in an integer
What is a very efficient way of determining how many digits there are in an integer in C++?
28 Answers
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Difference between DateTime and Time in Ruby
What's the difference between DateTime and Time classes in Ruby and what factors would cause me to choose one or the other?
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How to get default gateway in Mac OSX
I need to retrieve the default gateway on a Mac machine. I know that in Linux route -n will give an output from which I can easily retrieve this information. However this is not working in Mac OSX(Snow Leopard).
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How to convert Nonetype to int or string?
I've got an Nonetype value x , it's generally a number, but could be None . I want to divide it by a number, but Python raises:
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Regex to validate password strength
My password strength criteria is as below :
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