大约有 44,300 项符合查询结果(耗时:0.0410秒) [XML]

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Best way to represent a fraction in Java?

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How can I create a correlation matrix in R?

I have 92 set of data of same type. 5 Answers 5 ...
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Numpy where function multiple conditions

... 204 The best way in your particular case would just be to change your two criteria to one criterio...
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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting

... 230 For fitting y = A + B log x, just fit y against (log x). >>> x = numpy.array([1, 7, ...
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Ignoring new fields on JSON objects using Jackson [duplicate]

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Split string every nth character?

... >>> line = '1234567890' >>> n = 2 >>> [line[i:i+n] for i in range(0, len(line), n)] ['12', '34', '56', '78', '90'] share | ...
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How to check if a string contains a substring in Bash

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How to get first element in a list of tuples?

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How to split a delimited string in Ruby and convert it to an array?

... >> "1,2,3,4".split(",") => ["1", "2", "3", "4"] Or for integers: >> "1,2,3,4".split(",").map { |s| s.to_i } => [1, 2, 3, 4] Or for later versions of ruby (>= 1.9 - as pointed out by Alex): >> "1,2,3,4".sp...
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Which is better option to use for dividing an integer number by 2?

... of the following techniques is the best option for dividing an integer by 2 and why? 23 Answers ...