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Why does “split” on an empty string return a non-empty array?
...ngleton array containing just the input string is returned,
Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array.
According to this, the result of "".split(",") should be an empty array because of the second step, right?
It should. Unfortunately,...
How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
I'm using a transaction model to keep track all the events going through the system
2 Answers
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How to extract numbers from a string and get an array of ints?
I have a String variable (basically an English sentence with an unspecified number of numbers) and I'd like to extract all the numbers into an array of integers. I was wondering whether there was a quick solution with regular expressions?
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Xcode — what is $(SRCROOT)?
...ferent computer, so I need to update some paths. The library search paths all start with $(SRCROOT) . What does that mean?
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Remove duplicate values from JS array [duplicate]
...olution is O(n^2), making it inefficient.
– Casey Kuball
Sep 21 '17 at 16:35
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I really wish in 2...
Why do we need private subnet in VPC?
...tioning as a "NAT instance," providing network address translation (technically, port address translation) for instances in other, private subnets, allowing those machines to use the NAT instance's public IP address for their outbound Internet access.
The new managed NAT service does not fundamen...
What is the meaning of addToBackStack with null parameter?
I have a customer code. There is only one activity for all of the fragments i.e. the single activity is managing all the fragments.
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Using Mockito with multiple calls to the same method with the same arguments
... This answer helped me a lot because doAnswer()/thenAnswer() do not allow chaining multiple calls as doReturn()/thenReturn() do and I needed to compute something and not just return a different value. Creating an anonymous Answer object with a private count variable was what did the trick for...
How to compute the sum and average of elements in an array?
I am having problems adding all the elements of an array as well as averaging them out. How would I do this and implement it with the code I currently have? The elements are supposed to be defined as I have it below.
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Differences between Oracle JDK and OpenJDK
...a commercial license. You should now pay attention to which JDK you're installing as Oracle JDK without subscription could stop working. source
Ref: List of Java virtual machines
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