大约有 10,130 项符合查询结果（耗时：0.0133秒） [XML]
Parallel foreach with asynchronous lambda
I would like to handle a collection in parallel, but I'm having trouble implementing it and I'm therefore hoping for some help.
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Pythonic way to find maximum value and its index in a list?
If I want the maximum value in a list, I can just write max(List) , but what if I also need the index of the maximum value?
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Why implement interface explicitly?
So, what exactly is a good use case for implementing an interface explicitly?
11 Answers
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proper way to sudo over ssh
I have a script which runs another script via SSH on a remote server using sudo. However, when I type the password, it shows up on the terminal. (Otherwise it works fine)
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How to achieve function overloading in C?
Is there any way to achieve function overloading in C? I am looking at simple functions to be overloaded like
14 Answers
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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
I have a feeling there is a simple/built-in way to do this but I can't find it.
13 Answers
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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
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Rails migration for change column
We have script/generate migration add_fieldname_to_tablename fieldname:datatype syntax for adding new columns to a model.
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Immutable array in Java
Is there an immutable alternative to the primitive arrays in Java? Making a primitive array final doesn't actually prevent one from doing something like
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How to make the division of 2 ints produce a float instead of another int?
In another Bruce Eckels exercise in calculating velocity, v = s / t where s and t are integers. How do I make it so the division cranks out a float?
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