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Pointer to class data member “::*”
... An example is writing a "callback"-type class for some event-based system. CEGUI’s UI event subscription system, for example, takes a templated callback that stores a pointer to a member function of your choosing, so that you can specify a method to handle the event.
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Preview layout with merge root tag in Intellij IDEA/Android Studio
Let's imagine we are developing compound component based on LinearLayout. So, we create class like this:
3 Answers
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`elif` in list comprehension conditionals
...the language. Since Guido van Rossum explicitly designed it as a statement-based language, he firmly resisted for a long time (tertiary expressions, and particularly their abuse, are sources of much obscurity in code). When he finally succumbed, he announced he had deliberately chosen a syntax that ...
Forgot “git rebase --continue” and did “git commit”. How to fix?
...st write down its SHA1 somewhere so you don't lose it): git tag temp
git rebase --abort
Do the rebase again. You'll have to resolve the merge again. :(
git rebase --continue
git cherry-pick temp
The problem with this is that your temp commit probably contains both the resolution of the merge, and t...
What's the best way to get the current URL in Spring MVC?
I'd like to create URLs based on the URL used by the client for the active request. Is there anything smarter than taking the current HttpServletRequest object and it's getParameter...() methods to rebuilt the complete URL including (and only) it's GET parameters.
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When to use a linked list over an array/array list?
...h on the array to access each element, whereas you need to lookup the node based on the pointer for each element in linked list, which may result in page faults which may result in performance hits.
memory is a concern. Filled arrays take up less memory than linked lists. Each element in the array...
Why is JSHINT complaining that this is a strict violation?
...d so should be called using new. Doing so defines this to be a new object based on `Something.prototype'. It's most likely due to that assumption that it doesn't raise the possible strict violation warning.
– Andy Merts
Jan 7 '15 at 21:33
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How do I enumerate through a JObject?
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For people like me, linq addicts, and based on svick's answer, here a linq approach:
using System.Linq;
//...
//make it linq iterable.
var obj_linq = Response.Cast<KeyValuePair<string, JToken>>();
Now you can make linq expressions like:
JToken x...
Difference between binary semaphore and mutex
...by thread that had acquired it -- I just tried with a simple pthread_mutex based program, a thread can unlock mutex locked in main thread
– daisy
Jul 28 '12 at 3:55
15
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“new” keyword in Scala
...ly?
With Scala 3 (which should be released mid 2020, eight years later), based on Dotty: never.
Scala 3 will drop "new", as in this thread
Creator applications allow to use simple function call syntax to create instances
of a class, even if there is no apply method implemented.
Exampl...