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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...values beforehand so that you don't have to do this in both callbacks individually? Yes! And that's what we can use .pipe() for:
deferred.pipe(function(result) {
// result = [{value: 2}, {value: 4}, {value: 6}]
var values = [];
for(var i = 0, len = result.length; i < len; i++) {
...
Updating packages in Emacs
...versions afterwards.
You may also want to take a look at Carton which provides a more convenient way to manage your packages by declaring them in a dedicated file, and includes a convenient command line client to automatically install and upgrade packages declared in this way.
The order of packa...
Clustered vs Non-Clustered
...ows in the database. In other words, applying the clustered index to PersonId means that the rows will be physically sorted by PersonId in the table, allowing an index search on this to go straight to the row (rather than a non-clustered index, which would direct you to the row's location, adding an...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...t[AnyVal] because Int is a subtype of AnyVal. This means that you may provide an instance of List[Int] when a value of type List[AnyVal] is expected. This is really a very intuitive way for generics to work, but it turns out that it is unsound (breaks the type system) when used in the presence of ...
How to add a local repo and treat it as a remote repo
...
I am posting this answer to provide a script with explanations that covers three different scenarios of creating a local repo that has a local remote. You can run the entire script and it will create the test repos in your home folder (tested on windows git...
Just what is Java EE really? [closed]
...
Why can't the libraries function outside of the application server environment?
Actually they can. Most of the libraries can be directly used standalone (in Java SE) or included in a .war (practically that's nearly always Tomcat). Some parts of Java EE, like JP...
What are the best PHP input sanitizing functions?
...ons.
It's important to understand the difference between sanitizing and validating user data, escaping data for storage, and escaping data for presentation.
Sanitizing and Validating User Data
When users submit data, you need to make sure that they've provided something you expect.
Sanitization and ...
Covariance, Invariance and Contravariance explained in plain English?
...pes, other say it is about type conversion and others say it is used to decide whether a method is overwritten or overloaded.
All of the above.
At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, a...
Differences between ExpandoObject, DynamicObject and dynamic
..., the DLR performs late-bound calls to the instance's normal methods.
The IDynamicMetaObjectProvider interface allows a class to take control of its late-bound behavior.
When you use the dynamic keyword to interact with an IDynamicMetaObjectProvider implementation, the DLR calls the IDynamicMetaObj...
Java 8: performance of Streams vs Collections
...
Stop using LinkedList for anything but heavy removing from the middle of the list using iterator.
Stop writing benchmarking code by hand, use JMH.
Proper benchmarks:
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@BenchmarkMode(Mode.AverageTime)
@OperationsPerInvocation(StreamVsVanilla.N)
publi...