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CROSS JOIN vs INNER JOIN in SQL
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Cross join does not combine the rows, if you have 100 rows in each table with 1 to 1 match, you get 10.000 results, Innerjoin will only return 100 rows in the same situation.
These 2 examples will return the same result:
Cross join
select * f...
In which order should floats be added to get the most precise result?
...illion values equal to 1 / (1 billion), and one value equal to 1. If the 1 comes first, then the sum will come to 1, since 1 + (1 / 1 billion) is 1 due to loss of precision. Each addition has no effect at all on the total.
If the small values come first, they will at least sum to something, althoug...
Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
I am trying to determine the best time efficient algorithm to accomplish the task described below.
16 Answers
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When to use Mockito.verify()?
...As soon as you stub a method of a collaborator class, your unit test has become, in some sense, dependent on implementation. It's kind of in the nature of unit tests to be so. Since Mockito is as much about stubbing as it is about verification, the fact that you're using Mockito at all implies tha...
Is it better to specify source files with GLOB or each file individually in CMake?
...ferred the globbing approach for its simplicity, but over the years I have come to recognise that explicitly listing the files is less error-prone for large, multi-developer projects.
Original answer:
The advantages to globbing are:
It's easy to add new files as they
are only listed in one pla...
How do Trigonometric functions work?
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Once you've reduced your argument, most chips use a CORDIC algorithm to compute the sines and cosines. You may hear people say that computers use Taylor series. That sounds reasonable, but it's not true. The CORDIC algorithms are much better suited to efficient hardware implementation. (Softwa...
Do you need to dispose of objects and set them to null?
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Just what is Java EE really? [closed]
...n be injected into them.
Why do I need something massive as JBoss just to compile simple code to send an email?
There are a few things wrong with this question:
For compiling you only need the API jar, which is below 1MB for the Web Profile, and a little over 1MB for the full profile.
For runnin...
How important is the order of columns in indexes?
...tured or navigated. Have submitted an answer rectifying this stackoverflow.com/a/39080819/73226
– Martin Smith
Aug 22 '16 at 16:05
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Why should I not include cpp files and instead use a header?
...according to the grading, I lost marks for including cpp files instead of compiling and linking them . I'm not too clear on what that means.
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