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Java `final` method: what does it promise?
...ity and Contract -- Objects are composed of primitives (int, char, double, etc.) and/or other Objects. Not all operations applicable to those components should be applicable or even logical when they are used in the bigger Object. Methods with the final modifier can be used to ensure that. The Count...
Unit testing code with a file system dependency
...its dependencies. It doesn't test that the zip file was unzipped properly, etc.
You have hit the nail right on its head. What you want to test is the logic of your method, not necessarily whether a true file can be addressed. You don´t need to test (in this unit test) whether a file is correctly ...
difference between iframe, embed and object elements
... This means they you can use scripts in the parent to manipulate the child etc. That part is not possible with <object> or <iframe> where you would have to set up some other mechanism instead, such as the JavaScript postMessage API.
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How do I ignore the initial load when watching model changes in AngularJS?
...se !== since null and undefined will match in this situation, or ('1' == 1 etc)
– Jamie Pate
Feb 18 '17 at 0:42
in gen...
Why is extending native objects a bad practice?
...he scenes.
And that is the reason I dislike libs like jQuery, underscore, etc. Don't get me wrong; they are absolutely well-programmed and they work like a charm, but they are big. You use only 10% of them, and understand about 1%.
That's why I prefer an atomistic approach, where you only require ...
Why can't C++ be parsed with a LR(1) parser?
...a parser
that does this isn't context free, and LR parsers
(the pure ones, etc.) are (at best) context free.
One can cheat, and add per-rule reduction-time semantic checks in the
to LR parsers to do this disambiguation. (This code often isn't simple). Most of the other parser types
have some me...
Wrapping a C library in Python: C, Cython or ctypes?
...ore hesitant if I had to wrap a C++ library with lots of classes/templates/etc. But ctypes works well with structs and can even callback into Python.
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MySQL indexes - what are the best practices?
...index all columns, no columns, which indexes should span multiple columns, etc. It depends on the queries you need to run.
Yes, there is some overhead so you shouldn't create indexes needlessly. But you should create the indexes that give benefit to the queries you need to run quickly. The overh...
How to make the 'cut' command treat same sequental delimiters as one?
...eful for parsing files where the separator is not whitespace (for example /etc/passwd) and that have a fixed number of fields. Two separators in a row mean an empty field, and that goes for whitespace too.
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Detect if the app was launched/opened from a push notification
...tually becomes active, which is the same lifecycle method in all cases.
Sketch of our solution
Here are the main components of our solution:
Store a notificationUserInfo instance variable on the AppDelegate.
Set notificationUserInfo = nil in both applicationWillEnterForeground and didFinishLaunc...