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pandas: filter rows of DataFrame with operator chaining
Most operations in pandas can be accomplished with operator chaining ( groupby , aggregate , apply , etc), but the only way I've found to filter rows is via normal bracket indexing
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Are memory leaks ever ok? [closed]
Is it ever acceptable to have a memory leak in your C or C++ application?
50 Answers
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How to slice an array in Bash
Looking the "Array" section in the bash(1) man page, I didn't find a way to slice an array.
4 Answers
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What Git branching models work for you?
Our company is currently using a simple trunk/release/hotfixes branching model and would like advice on what branching models work best for your company or development process.
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What is the main difference between Inheritance and Polymorphism?
I was presented with this question in an end of module open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar quest...
What is the difference between Non-Repeatable Read and Phantom Read?
What is the difference between non-repeatable read and phantom read?
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How can I force division to be floating point? Division keeps rounding down to 0?
I have two integer values a and b , but I need their ratio in floating point. I know that a < b and I want to calculate a / b , so if I use integer division I'll always get 0 with a remainder of a .
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namespaces for enum types - best practices
Often, one needs several enumerated types together. Sometimes, one has a name clash. Two solutions to this come to mind: use a namespace, or use 'larger' enum element names. Still, the namespace solution has two possible implementations: a dummy class with nested enum, or a full blown namespace.
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What is the difference between a field and a property?
In C#, what makes a field different from a property, and when should a field be used instead of a property?
32 Answers
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What is a bus error?
What does the "bus error" message mean, and how does it differ from a segfault?
15 Answers
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