大约有 47,000 项符合查询结果(耗时:0.0643秒) [XML]

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Can you set a border opacity in CSS?

Is there a straight forward CSS way to make the border of an element semi-transparent with something like this? 9 Answers ...
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How can you profile a Python script?

Project Euler and other coding contests often have a maximum time to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ . ...
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What does “fragment” mean in ANTLR?

What does fragment mean in ANTLR? 4 Answers 4 ...
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Is it possible to set a number to NaN or infinity?

Is it possible to set an element of an array to NaN in Python? 4 Answers 4 ...
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Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?

Is it guaranteed that False == 0 and True == 1 , in Python (assuming that they are not reassigned by the user)? For instance, is it in any way guaranteed that the following code will always produce the same results, whatever the version of Python (both existing and, likely, future ones)? ...
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers

I have a Numpy array consisting of a list of lists, representing a two-dimensional array with row labels and column names as shown below: ...
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Days between two dates? [duplicate]

What's the shortest way to see how many full days have passed between two dates? Here's what I'm doing now. 4 Answers ...
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How to calculate the angle between a line and the horizontal axis?

In a programming language (Python, C#, etc) I need to determine how to calculate the angle between a line and the horizontal axis? ...
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)

Does anyone know why this code doesn't work: 18 Answers 18 ...
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How do I efficiently iterate over each entry in a Java Map?

If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map? ...