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How is “=default” different from “{}” for default constructor and destructor?
I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question:
...
Java String to SHA1
...g Base64. Apache Commons Codec API 1.4, has this nice utility to take away all the pain. refer here
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Form inside a form, is that alright? [duplicate]
...HTML5 input element's form attribute. Although we don't nest forms structurally, inputs are evaluated as they are in their own form. In my tests, 3 major browsers support this except IE(IE11). Form nesting limitation was a big obstacle for HTML UI design.
Here is a sample code, when you click Save ...
JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements
...er correct entries).
So, instead of:
var data = {
'mode': 'filter_city',
'id_A': e[e.selectedIndex]
};
it should be:
var data = {
'mode': 'filter_city',
'id_A': e[e.selectedIndex].value
};
Note: check Jason Kulatunga's answer, it quotes JQuery doc to explain wh...
Minimum and maximum value of z-index?
...t to 0 and is
not a negative number.
Note that many properties that allow
an integer or real number as a value
actually restrict the value to some
range, often to a non-negative value.
So basically there are no limitations for z-index value in the CSS standard, but I guess most browse...
How to add leading zeros for for-loop in shell? [duplicate]
... that this feature got introduced with bash-4.0-alpha: Brace expansion now allows zero-padding of expanded numeric values and will add the proper number of zeroes to make sure all values contain he same number of digits.).
– Adrian Frühwirth
Feb 13 '15 at 18:5...
UITapGestureRecognizer - single tap and double tap
...UITapGestureRecognizer(target: self, action:#selector(self.singleTapAction(_:)))
singleTap.numberOfTapsRequired = 1
view.addGestureRecognizer(singleTap)
let doubleTap = UITapGestureRecognizer(target: self, action:#selector(self.doubleTapAction(_:)))
doubleTap.numberOfTapsRequired = 2
view.addGestur...
What is the difference between a.getClass() and A.class in Java?
...getClass() will return the B class.
A.class evaluates to the A class statically, and is used for other purposes often related to reflection.
In terms of performance, there may be a measurable difference, but I won't say anything about it because in the end it is JVM and/or compiler dependent.
T...
Confused about Service vs Factory
...
All angular services are singletons:
Docs (see Services as singletons): https://docs.angularjs.org/guide/services
Lastly, it is important to realize that all Angular services are application singletons. This means that t...
The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity mem
...is code in Entity Framework I receive the following error. I need to get all the rows for a specific date, DateTimeStart is of type DataType in this format 2013-01-30 12:00:00.000
...