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What is null in Java?
...on programmer errors. Some people avoid null by using Null object pattern, etc.
This is a huge topic on its own, so it's best discussed as answer to another question.
I will end this with a quote from the inventor of null himself, C.A.R Hoare (of quicksort fame):
I call it my billion-dollar mi...
C++ Double Address Operator? (&&)
...d::move. Showing what would happen with int&& c = std::move( b );, etc.
– Zzzach...
Jul 24 '19 at 21:00
4
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Django set default form values
...mething entered by a user, or based on their login, geographical location, etc.)
– Richard J Foster
Sep 26 '12 at 19:43
67
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Implementation difference between Aggregation and Composition in Java
...ebatable as it depends on how you need to handle creation, hiring deletion etc. Unrelevant for the OP
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Is there a way to define a min and max value for EditText in Android?
... in problem bu it accept all values less than 20 like 0 , 1, 2 , ------ 19 etc
– EminenT
Jun 13 '15 at 5:52
did you fi...
Android image caching
...Connection();
connection.setUseCaches(true);
Object response = connection.getContent();
if (response instanceof Bitmap) {
Bitmap bitmap = (Bitmap)response;
}
Provides both memory and flash-rom cache, shared with the browser.
grr. I wish somebody had told ME that before i wrote my own cache man...
How many parameters are too many? [closed]
...pecific cases (calls to OS APIs, routines where optimization is important, etc). I suggest to hide the complexity of these routines by adding a layer of abstraction just above these calls whenever possible.
Nick has some interesting thoughts on this. If you don't want to read his comments, I summari...
What does a tilde do when it precedes an expression?
...needed ++ and -- in a while because of primitive methods like map, forEach etc. My point is more about why they didn't also consider ~ excessively tricky when whatever standard used includes increment and decrement operators. To forbid something so CIS101 doesn't make any sense.
...
When to use ko.utils.unwrapObservable?
...that checks permissions, or determines what to do based on something else, etc). What I really needed was to unwrap any function, even if it's not an observable.
The following recursively unwraps EVERYTHING:
ko.utils.unwrapFunction = function (func) {
if (typeof func != 'function') {
r...
How to make a transparent HTML button?
...tic and accessible, it's best to use the button tag and remove background, etc.. using css. However, this is fine, especially in a situation where accessibility is not an issue like a native app that uses html5 and CSS for layout, here is an example: smashingmagazine.com/2013/10/17/…
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