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Is std::vector so much slower than plain arrays?
I've always thought it's the general wisdom that std::vector is "implemented as an array," blah blah blah. Today I went down and tested it, and it seems to be not so:
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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
In Pandas, when I select a label that only has one entry in the index I get back a Series, but when I select an entry that has more then one entry I get back a data frame.
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Change date of git tag (or GitHub Release based on it)
I'm adding Releases to my projects on GitHub by adding tags to various commits in the Main branch.
3 Answers
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How can I check if character in a string is a letter? (Python)
I know about islower and isupper , but can you check whether or not that character is a letter?
For Example:
6 Answers
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How to append rows to an R data frame
I have looked around StackOverflow, but I cannot find a solution specific to my problem, which involves appending rows to an R data frame.
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Bash: If/Else statement in one line
I am trying to check if a process (assume it is called some_process ) is running on a server. If it is, then echo 1, otherwise echo 0.
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What is the role of the bias in neural networks? [closed]
I'm aware of the gradient descent and the back-propagation algorithm. What I don't get is: when is using a bias important and how do you use it?
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How to iterate a loop with index and element in Swift
Is there a function that I can use to iterate over an array and have both index and element, like Python's enumerate ?
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Why does this code using random strings print “hello world”?
The following print statement would print "hello world".
Could anyone explain this?
15 Answers
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What exactly is nullptr?
We now have C++11 with many new features. An interesting and confusing one (at least for me) is the new nullptr .
14 Answe...