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What would cause an algorithm to have O(log n) complexity?

My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more. 6 Answers ...
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What is the difference between int, Int16, Int32 and Int64?

What is the difference between int , System.Int16 , System.Int32 and System.Int64 other than their sizes? 10 Answers ...
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Spring @Transaction method call by the method within the same class, does not work?

I am new to Spring Transaction. Something that I found really odd, probably I did understand this properly. 8 Answers ...
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postgres default timezone

I installed PostgreSQL 9 and the time it is showing is 1 hour behind the server time. 7 Answers ...
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How do I compare two string variables in an 'if' statement in Bash? [duplicate]

I'm trying to get an if statement to work in Bash (using Ubuntu ): 12 Answers 12 ...
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How to select option in drop down protractorjs e2e tests

I am trying to select an option from a drop down for the angular e2e tests using protractor. 31 Answers ...
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What is unit testing and how do you do it? [duplicate]

What is unit testing? What Makes a Good Unit Test? New to Unit Testing Unit Testing - definitions Learning Unit Testing How to properly mock and unit test Unit Testing: Beginner Questions And many more ... Also, Google for site:stackoverflow.com "how do you" unit-test...
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Loading custom configuration files

I know I can open config files that are related to an assembly with the static ConfigurationManager.OpenExe(exePath) method but I just want to open a config that is not related to an assembly. Just a standard .NET config file. ...
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How to sum a variable by group

I have a data frame with two columns. First column contains categories such as "First", "Second", "Third", and the second column has numbers that represent the number of times I saw the specific groups from "Category". ...
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Abstract classes in Swift Language

Is there a way to create an abstract class in the Swift Language, or is this a limitation just like Objective-C? I'd like to create a abstract class comparable to what Java defines as an abstract class. ...