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Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?
...u (implicitly) choose to do this by implementing the Composition Root (the startup path where you compose your object graphs) inside your MVC3 project. If you are very strict about protecting your architectural boundaries using assemblies, you can either move your presentation logic to a different p...
JavaScript hashmap equivalent
...ing clear of possible clashes with default properties.
Examples to get you started:
If your objects include a unique user name — use it as a key.
If it includes a unique customer number — use it as a key.
If it includes unique government-issued numbers like US SSNs, or a passport number, and y...
JSP tricks to make templating easier?
... not contain
// any '.', and /WEB-INF/templates/ prefix if it does not start with a '/')
String template = (String)jspContext.getAttribute("template");
if (template != null) {
if (!template.contains("."))
template += ".jsp";
if (!template.startsWith("/"))
...
MySQL order by before group by
... of a subquery won't work. Even the accepted answer uses a subquery but it starts explaining why resorting is a bad idea (Using an ORDER BY in a subquery is not the best solution to this problem)
– fthiella
Nov 19 '17 at 21:52
...
How do iOS Push Notifications work?
...ication. It ensures that notifications are routed only between the correct start (provider) and end (device) points.
A device token is an opaque NSData instance that contains a unique identifier assigned by Apple to a specific app on a specific device. Only APNs can decode and read the contents of a...
“Single-page” JS websites and SEO
...n. It should be baked in to the page and application architecture from the start - retrofitting is painful and will cause more duplication than is necessary.
I've been working with pushState and SEO recently for a couple of different application, and I found what I think is a good approach. It basi...
Tags for Emacs: Relationship between etags, ebrowse, cscope, GNU Global and exuberant ctags
...mantic in Emacs 23.2 (it used to be an external package before that) we'll start seeing more uses for it (like using it to analyse a buffer source code to properly highlight it)
Since Emacs 24.1 semantic is usable from the Emacs completion framework. The easiest way to test it is to open up a C sou...
WebView and HTML5
...tener(this);
video.setOnErrorListener(this);
video.start();
}
}
}
-Handle the onCompletion and the onError events for the video, in order to get back to the web view.
public void onCompletion(MediaPlayer mp) {
Log.d(TAG, "Video completo");
a.setContentV...
What are type lambdas in Scala and what are their benefits?
...rsion of a second monad which is specialized to some third monad. When you start to stack, these kinds of constructs become very necessary. I never instantiate an FG, of course; it's just there as a hack to let me express what I want in the type system.
...
Catching an exception while using a Python 'with' statement
...e can add an extra sentinel variable to check whether the body of the with started to execute (i.e. differentiating between __enter__ and the others):
try:
mgr = ContextManager() # __init__ could raise
except ValueError as err:
print('__init__ raised:', err)
else:
try:
entered_...