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What is a plain English explanation of “Big O” notation?
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Quick note, this is almost certainly confusing Big O notation (which is an upper bound) with Theta notation "Θ" (which is a two-side bound). In my experience, this is actually typical of discussions in non-academic settings. Apologies for...
Mod of negative number is melting my brain
... return r<0 ? r+m : r;
}
or variants thereof.
The reason it works is that "x%m" is always in the range [-m+1, m-1]. So if at all it is negative, adding m to it will put it in the positive range without changing its value modulo m.
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How to perform runtime type checking in Dart?
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The instanceof-operator is called is in Dart. The spec isn't exactly friendly to a casual reader, so the best description right now seems to be http://www.dartlang.org/articles/optional-types/.
Here's an example:
class Foo { }
main() {
var foo ...
What is a “cache-friendly” code?
What is the difference between " cache unfriendly code " and the " cache friendly " code?
9 Answers
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What are free monads?
... every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of category theory.)
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What's is the difference between include and extend in use case diagram?
What is the difference between include and extend in a use case diagram ?
19 Answers
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Why does !{}[true] evaluate to true in JavaScript?
{}[true] is [true] and ![true] should be false .
10 Answers
10
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When use getOne and findOne methods Spring Data JPA
... So to ensure the effective loading of the entity, invoking a method on it is required.
findOne()/findById() is really more clear and simple to use than getOne().
So in the very most of cases, favor findOne()/findById() over getOne().
API Change
From at least, the 2.0 version, Spring-Data-Jpa m...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
Can somebody explain what is REST and what is SOAP in plain english? And how Web Services work?
14 Answers
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Check whether number is even or odd
How would I determine whether a given number is even or odd? I've been wanting to figure this out for a long time now and haven't gotten anywhere.
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