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What's the difference between a Future and a Promise?
...solved Future will necessarily involve 2 thread context switches, which at least a few years back was likely to require around 50 us.
– Periata Breatta
Why does Maven have such a bad rep? [closed]
...'t have any legacy to support. That said:
Maven is all-or-nothing. Or at least as far as I could tell from the documentation. You can't easily use maven as a drop-in replacement for ant, and gradually adopt more advanced features.
According to the documentation, Maven is transcendental happiness t...
C# vs C - Big performance difference
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Good answer, but I disagree about language speed, at least in analogy: It's been found that Welsch is a slower language than most because of the high frequency of long vowels. Additionally, people remember words (and word lists) better if they are faster to say. web.missouri.ed...
Mutable vs immutable objects
...mbers {5, 7, 9}. Even though the type of the field is known, there are at least four different things it can represent:
A potentially-shared reference, all of whose holders care only that it encapsulates the values 5, 7, and 9. If foo wants arr to encapsulate different values, it must replace it...
How to avoid passing parameters everywhere in play2?
...implicitly passed by the compiler
}
So, since templates often receive at least this implicit parameter, you could replace it with a richer value containing e.g. your menus. You can do that by using the actions composition mechanism of Play 2.
To do that you have to define your Context class, wrap...
Under what circumstances are linked lists useful?
...d list is currently serving as one of the main supporting structures of at least one great new technology.
(A singly-linked list makes a compelling lock-free - but not wait-free - choice in these cases, because main operations can be carried out with a single CAS (+retries).
In a modern GC-d enviro...
How do I delete a Git branch locally and remotely?
...can see there are local clone repo and remote origin repo. So there are at least two physical branches. Where is the third branch to delete? Is the third branch only a pointer pointing to a commit in the local clone repo?
– huggie
Feb 18 '16 at 2:00
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How to test that no exception is thrown?
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I stumbled upon this because of SonarQube's rule "squid:S2699": "Add at least one assertion to this test case."
I had a simple test whose only goal was to go through without throwing exceptions.
Consider this simple code:
public class Printer {
public static void printLine(final String li...
How to sort an array in descending order in Ruby
... could introduce a second sorting key (that for sure needs to be unique at least for all items that have the same sorting key):
a.sort_by {|h| [-h[:bar],-h[:foo]]}
=> [{:foo=>2, :bar=>1}, {:foo=>1, :bar=>1}]
a.sort_by {|h| [h[:bar],h[:foo]]}.reverse
=> [{:foo=>2, :bar=>1},...
Entity Framework VS LINQ to SQL VS ADO.NET with stored procedures? [closed]
...2S (as of .NET 4.0). L2EF is a lot nicer than L2S nowadays, since it at least can update your model as the DB changes, which L2S could never do automatically. I also like the fact that you can map simple M:M relationships with EF as relationships without needing to have an intermediate entity. ...