大约有 10,150 项符合查询结果(耗时:0.0204秒) [XML]

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How can I read command line parameters from an R script?

I've got a R script for which I'd like to be able to supply several command-line parameters (rather than hardcode parameter values in the code itself). The script runs on Windows. ...
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Shared-memory objects in multiprocessing

Suppose I have a large in memory numpy array, I have a function func that takes in this giant array as input (together with some other parameters). func with different parameters can be run in parallel. For example: ...
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How to count instances of character in SQL Column

I have an sql column that is a string of 100 'Y' or 'N' characters. For example: 16 Answers ...
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Best way to iterate through a Perl array

Which is the best implementation(in terms of speed and memory usage) for iterating through a Perl array? Is there any better way? ( @Array need not be retained). ...
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Simple way to repeat a String in java

I'm looking for a simple commons method or operator that allows me to repeat some String n times. I know I could write this using a for loop, but I wish to avoid for loops whenever necessary and a simple direct method should exist somewhere. ...
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Guards vs. if-then-else vs. cases in Haskell

I have three functions that find the nth element of a list: 3 Answers 3 ...
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How to get the Power of some Integer in Swift language?

I'm learning swift recently, but I have a basic problem that can't find an answer 20 Answers ...
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How to use LINQ to select object with minimum or maximum property value

I have a Person object with a Nullable DateOfBirth property. Is there a way to use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value. ...
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How do I get a background location update every n minutes in my iOS application?

I'm looking for a way to get a background location update every n minutes in my iOS application. I'm using iOS 4.3 and the solution should work for non-jailbroken iPhones. ...
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What is a 'semantic predicate' in ANTLR?

What is a semantic predicate in ANTLR? 2 Answers 2 ...