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What is the easiest way to push an element to the beginning of the array?
I can't think of a one line way to do this. Is there a way?
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How to check whether a pandas DataFrame is empty?
How to check whether a pandas DataFrame is empty? In my case I want to print some message in terminal if the DataFrame is empty.
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Compare version numbers without using split function
How do I compare version numbers?
5 Answers
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typedef fixed length array
I have to define a 24-bit data type.I am using char[3] to represent the type. Can I typedef char[3] to type24 ? I tried it in a code sample. I put typedef char[3] type24; in my header file. The compiler did not complain about it. But when I defined a function void foo(type24 val) {} in my C...
vertical & horizontal lines in matplotlib
I do not quite understand why I am unable to create horizontal and vertical lines at specified limits. I would like to bound the data by this box. However, the sides do not seem to comply with my instructions. Why is this?
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Why doesn't println! work in Rust unit tests?
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Android gradle: buildtoolsVersion vs compileSdkVersion
What's the difference between buildtoolsVersion vs compileSdkVersion in the build.gradle for an Android project?
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dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
When using summarise with plyr 's ddply function, empty categories are dropped by default. You can change this behavior by adding .drop = FALSE . However, this doesn't work when using summarise with dplyr . Is there another way to keep empty categories in the result?
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float64 with pandas to_csv
I'm reading a CSV with float numbers like this:
2 Answers
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Why can't I center with margin: 0 auto?
...d list. I have applied margin: 0 auto to the unordered list but it won't center it within the header div.
5 Answers
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