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python: how to identify if a variable is an array or a scalar
I have a function that takes the argument NBins . I want to make a call to this function with a scalar 50 or an array [0, 10, 20, 30] . How can I identify within the function, what the length of NBins is? or said differently, if it is a scalar or a vector?
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How do I get a class instance of generic type T?
I have a generics class, Foo<T> . In a method of Foo , I want to get the class instance of type T , but I just can't call T.class .
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理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...么？Python’s with statement provides a very convenient way of dealing with the situation where you
With语句是什么？
Python’s with statement provides a very convenient way of dealing with the situation where you have to do a setup and teardown to make something happen. A very...
How to plot two histograms together in R?
I am using R and I have two data frames: carrots and cucumbers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers).
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Find and extract a number from a string
I have a requirement to find and extract a number contained within a string.
29 Answers
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java.util.Date to XMLGregorianCalendar
Isn't there a convenient way of getting from a java.util.Date to a XMLGregorianCalendar?
9 Answers
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How are 3D games so efficient? [closed]
There is something I have never understood. How can a great big PC game like GTA IV use 50% of my CPU and run at 60fps while a DX demo of a rotating Teapot @ 60fps uses a whopping 30% ?
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Java: convert List to a String
JavaScript has Array.join()
22 Answers
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How do synchronized static methods work in Java and can I use it for loading Hibernate entities?
... will call Hibernate functions to accomplish basic data access. I am wondering if making the method synchronized is the right approach to ensure thread-safety.
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Is it possible to use getters/setters in interface definition?
At the moment, TypeScript does not allow use get/set methods(accessors) in interfaces.
For example:
4 Answers
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