大约有 4,900 项符合查询结果(耗时:0.0167秒) [XML]

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OpenShift rhc setup using multiple accounts

I have two accounts on Openshift platform. How can I setup my computer so that I can manage both of them with rhc ? I cannot find any relevant option in the command line arguments. ...
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How can I reverse a NSArray in Objective-C?

..., @"ce", @"cf", @"cg", @"ch", @"ci", @"cj", @"ck", @"cl", @"cm", @"cn", @"co", @"cp", @"cq", @"cr", @"cs", @"ct", @"cu", @"cv", @"cw", @"cx", @"cy", @"cz"]; NSDate *methodStart = [NSDate date]; NSArray *reversed = [[anArray reverseObjectEnumerator] allObjects]; NSDate *methodFinis...
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How do I trim leading/trailing whitespace in a standard way?

Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution. ...
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What is the difference between char s[] and char *s?

In C, one can use a string literal in a declaration like this: 13 Answers 13 ...
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How to convert list of key-value tuples into dictionary?

I have a list that looks like: 7 Answers 7 ...
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Cost of len() function

What is the cost of len() function for Python built-ins? (list/tuple/string/dictionary) 5 Answers ...
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Longest line in a file

I'm looking for a simple way to find the length of the longest line in a file. Ideally, it would be a simple bash shell command instead of a script. ...
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Fastest way to find second (third…) highest/lowest value in vector or column

R offers max and min, but I do not see a really fast way to find another value in the order, apart from sorting the whole vector and then picking a value x from this vector. ...
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Calculating arithmetic mean (one type of average) in Python

Is there a built-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers? ...
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Function to clear the console in R and RStudio

I am wondering if there is a function to clear the console in R and, in particular, RStudio I am looking for a function that I can type into the console, and not a keyboard shortcut. ...