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How to drop a list of rows from Pandas dataframe?

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Converting bool to text in C++

Maybe this is a dumb question, but is there any way to convert a boolean value to a string such that 1 turns to "true" and 0 turns to "false"? I could just use an if statement, but it would be nice to know if there is a way to do that with the language or standard libraries. Plus, I'm a pedant. :...
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Why would you use an ivar?

I usually see this question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q). ...
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What's the purpose of git-mv?

From what I understand, Git doesn't really need to track file rename/move/copy operations, so what's the real purpose of git mv ? The man page isn't specially descriptive... ...
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How to remove unreferenced blobs from my git repo

I have a GitHub repo that had two branches - master & release. 10 Answers 10 ...
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What is more efficient? Using pow to square or just multiply it with itself?

What of these two methods is in C more efficient? And how about: 7 Answers 7 ...
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM

I have a computer with 1 MB of RAM and no other local storage. I must use it to accept 1 million 8-digit decimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection. ...
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Is this a “good enough” random algorithm; why isn't it used if it's faster?

I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part. ...
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Efficient string concatenation in C++

...ries about "+" operator in std::string and various workarounds to speed up concatenation. Are any of these really necessary? If so, what is the best way to concatenate strings in C++? ...
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What are the most common non-BMP Unicode characters in actual use? [closed]

In your experience which Unicode characters, codepoints, ranges outside the BMP (Basic Multilingual Plane) are the most common so far? These are the ones which require 4 bytes in UTF-8 or surrogates in UTF-16. ...