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Warning message: In `…` : invalid factor level, NA generated
I don't understand why I got this warning message.
5 Answers
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Convert seconds to Hour:Minute:Second
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You can use the gmdate() function:
echo gmdate("H:i:s", 685);
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Convert base-2 binary number string to int
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You use the built-in int function, and pass it the base of the input number, i.e. 2 for a binary number:
>>> int('11111111', 2)
255
Here is documentation for python2, and for python3.
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Npm Please try using this command again as root/administrator
...'ve been desperately trying to install modules using node.js but it always fails getting packages with npm.
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What ReSharper 4+ live templates for C# do you use? [closed]
What ReSharper 4.0 templates for C# do you use?
36 Answers
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Git Push error: refusing to update checked out branch
I have solved some merge conflicts, committed then tried to Push my changes and received the following error:
11 Answers
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Why can I use auto on a private type?
I was somehow surprised that the following code compiles and runs (vc2012 & gcc4.7.2)
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What is float in Java?
...as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conversion cannot be performed implicitly.
If you want to create a float, you should end your number wi...
How to echo with different colors in the Windows command line
I know that the color bf command sets the colors of the whole command line window but I wanted to to print one single line in a different color.
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