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Why is reading lines from stdin much slower in C++ than Python?
...an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misunderstanding something.
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Check number of arguments passed to a Bash script
...ke my Bash script to print an error message if the required argument count is not met.
10 Answers
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Difference between map, applymap and apply methods in Pandas
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Straight from Wes McKinney's Python for Data Analysis book, pg. 132 (I highly recommended this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly this:
In [116]: frame = DataFrame(np.rando...
What is the difference between atan and atan2 in C++?
What is the difference between atan and atan2 in C++?
11 Answers
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How to use protractor to check if an element is visible?
I'm trying to test if an element is visible using protractor. Here's what the element looks like:
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Comparing two strings, ignoring case in C# [duplicate]
Which of the following two is more efficient? (Or maybe is there a third option that's better still?)
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What languages are Windows, Mac OS X and Linux written in?
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Windows: C++, kernel is in C
Mac: Objective C, kernel is in C (IO PnP subsystem is Embedded C++)
Linux: Most things are in C, many userland apps are in Python, KDE is all C++
All kernels will use some assembly code as well.
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Last non-empty cell in a column
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This works with both text and numbers and doesn't care if there are blank cells, i.e., it will return the last non-blank cell.
It needs to be array-entered, meaning that you press Ctrl-Shift-Enter after you type or paste it in...
What exactly does the .join() method do?
...ty new to Python and am completely confused by .join() which I have read is the preferred method for concatenating strings.
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How can I create an Asynchronous function in Javascript?
Check out this code :
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