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Which @NotNull Java annotation should I use?
...make my code more readable as well as use tooling like IDE code inspection and/or static code analysis (FindBugs and Sonar) to avoid NullPointerExceptions. Many of the tools seem incompatible with each others' @NotNull / @NonNull / @Nonnull annotation and listing all of them in my code would be t...
Having links relative to root?
...te the W3's example:
For example, given the following BASE declaration and A declaration:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<HTML>
<HEAD>
<TITLE>Our Products</TITLE>
<BASE href="http://www.aviar...
How many threads is too many?
I am writing a server, and I send each action of into a separate thread when the request is received. I do this because almost every request makes a database query. I am using a threadpool library to cut down on construction/destruction of threads.
...
What is the difference between NTFS Junction Points and Symbolic Links?
...t a high level, the only obvious difference between NTFS Junction Points and Symbolic Links is that Junctions are only able to be directories, while SymLinks are allowed to also target files.
...
What are the differences between Abstract Factory and Factory design patterns?
... Difference Between The Two
The main difference between a "factory method" and an "abstract factory" is that the factory method is a method, and an abstract factory is an object. I think a lot of people get these two terms confused, and start using them interchangeably. I remember that I had a hard ...
Why does Twitter Bootstrap Use Pixels for Font Size?
...ding behind the browser zoom excuse. Really sad to see such a heavily used and influential framework completely ignore accessibility issues and a fundamental cornerstone of responsive design. They are in a position of great responsibility and unfortunately seem to have no intention of acting accordi...
What are the disadvantages to declaring Scala case classes?
...
First the good bits:
Everything immutable by default
Yes, and can even be overridden (using var) if you need it
Getters automatically defined
Possible in any class by prefixing params with val
Decent toString() implementation
Yes, very useful, but doable by hand on any class if nece...
How to use concerns in Rails 4
...4 project generator now creates the directory "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models.
...
INNER JOIN ON vs WHERE clause
... easier to see this with the WHERE syntax.
As for your example, in MySQL (and in SQL generally) these two queries are synonyms.
Also note that MySQL also has a STRAIGHT_JOIN clause.
Using this clause, you can control the JOIN order: which table is scanned in the outer loop and which one is in the...
Wait for all promises to resolve
...sociated with them. I want to be able to do something when all the actions and their subactions are complete. There will likely be multiple $q.alls, however once I start the resolution process, no new actions/promises will be chained.
– jensengar
Feb 13 '14 at ...