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ruby on rails f.select options with custom attributes
...at you want:
(1) Using a custom attribute name in HTML5. In HTML5 you are allowed to have custom attribute names, but they have to be pre-pended with 'data-'. These custom attributes will not get submitted with your form, but they can be used to access your elements in Javascript. If you want to ac...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
...ries to load
in the definition of a class (as part
of a normal method call or as part of
creating a new instance using the new
expression) and no definition of the
class could be found.
The searched-for class definition
existed when the currently executing
class was compiled, but ...
Possible heap pollution via varargs parameter
...hrow a CCE
B b = listOfBs.get(0);
@SafeVarargs does not prevent this at all. However, there are methods which provably will not pollute the heap, the compiler just can't prove it. Previously, callers of such APIs would get annoying warnings that were completely pointless but had to be suppressed ...
Why doesn't Java allow generic subclasses of Throwable?
...
They could just disallow using two catch blocks with the same type together. So that using SomeExc<Integer> alone would be legal, only using SomeExc<Integer> and SomeExc<String> together would be illegal. That would make no pr...
Difference between git pull and git pull --rebase
...t saying git pull --rebase is the same as git fetch and git rebase is basically how it is, but it's not exactly semantically equivalent. There are some differences, some of which are explained here. gitolite.com/git-pull--rebase
– w0rp
Aug 20 '15 at 9:47
...
How do I remove the passphrase for the SSH key without having to create a new key?
...ch can be left blank to have no passphrase).
If you would like to do it all on one line without prompts do:
$ ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]
Important: Beware that when executing commands they will typically be logged in your ~/.bash_history file (or similar...
In AngularJS, what's the difference between ng-pristine and ng-dirty?
... to roll your own solution (some pretty good ones can be found here). Basically, this means iterating over all form fields and setting their $dirty flag to false.
Hope this helps.
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How to create a generic array in Java?
...tly what type of objects it contains (i.e. its constructor was explicitly called with a Class<E> argument, and methods will throw an exception when they are passed arguments that are not of type E. See Collections.checkedCollection.
-> in that case, you should write:
public class GenSet&l...
XSD: What is the difference between xs:integer and xs:int?
... XSD processor, this is true but misleading: it's not an XSD processor at all.
– C. M. Sperberg-McQueen
Feb 12 '15 at 16:56
8
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Why is f(i = -1, i = -1) undefined behavior?
...
Very nice example of how the expression could actually do something unexpected while conforming to sequencing rules. Yes, a bit contrived, but so is the code snipped I'm asking about in the first place. :)
– Nicu Stiurca
Feb 10 '14 at 8...