大约有 47,000 项符合查询结果(耗时:0.0602秒) [XML]

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How to split a sequence into two pieces by predicate?

... 195 By using partition method: scala> List(1,2,3,4).partition(x => x % 2 == 0) res0: (List...
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Boolean operators && and ||

...an return a vector, like this: ((-2:2) >= 0) & ((-2:2) <= 0) # [1] FALSE FALSE TRUE FALSE FALSE The longer form evaluates left to right examining only the first element of each vector, so the above gives ((-2:2) >= 0) && ((-2:2) <= 0) # [1] FALSE As the help page says...
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Python list iterator behavior and next(iterator)

... 199 What you see is the interpreter echoing back the return value of next() in addition to i being...
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range() for floats

... 21 Answers 21 Active ...
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deleting rows in numpy array

... 157 The simplest way to delete rows and columns from arrays is the numpy.delete method. Suppose I...
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Difference between `mod` and `rem` in Haskell

... 183 They're not the same when the second argument is negative: 2 `mod` (-3) == -1 2 `rem` (-3) ...
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?

... answered Dec 4 '12 at 0:11 sgesge 5,95011 gold badge1212 silver badges1616 bronze badges ...
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How to loop through all but the last item of a list?

... for x in y[:-1] If y is a generator, then the above will not work. share | improve this answer | follow ...
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How to break nested loops in JavaScript? [duplicate]

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Counting the Number of keywords in a dictionary in python

... | edited Feb 7 '10 at 5:11 answered Feb 6 '10 at 7:41 ...