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What's the nearest substitute for a function pointer in Java?
...gFunction sf) {
int i = sf.func("my string");
// do whatever ...
}
And would be called like so:
ref.takingMethod(new StringFunction() {
public int func(String param) {
// body
}
});
EDIT: In Java 8, you could call it with a lambda expression:
ref.takingMethod(param -> ...
How to access session variables from any class in ASP.NET?
...access session variables from any page or control using Session["loginId"] and from any class (e.g. from inside a class library), using System.Web.HttpContext.Current.Session["loginId"].
But please read on for my original answer...
I always use a wrapper class around the ASP.NET session to simpl...
multiple definition of template specialization when using different objects
... in different object files (ie. in this case it is instantiated in other.c and main.c) but the original object itself is defined only in one file - in this case hello.h.
– Justin Liang
Apr 8 '15 at 17:02
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Overflow Scroll css is not working in the div
...ay overflow content of a block-level element, when it overflows at the top and bottom edges.
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
Can constructors be async?
...onstructor acts very similarly to a method returning the constructed type. And async method can't return just any type, it has to be either “fire and forget” void, or Task.
If the constructor of type T actually returned Task<T>, that would be very confusing, I think.
If the async constru...
In Android, how do I set margins in dp programmatically?
In this , this and this thread I tried to find an answer on how to set the margins on a single view. However, I was wondering if there isn't an easier way. I'll explain why I rather wouldn't want to use this approach:
...
Simulator slow-motion animations are now on?
...as experimenting, trying to see if i could get navigation items to animate and scroll between each other.
11 Answers
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“Insufficient Storage Available” even there is lot of free space in device memory
The total space of my app is 10 MB, and after installation it will take less than 20 MB. In Galaxy Note I , while updating my app, it's saying "Insufficient Storage Available", where there is 214 MB of free space in device memory (internal). It happens even trying to download a new app.
...
Is there a way to get a collection of all the Models in your Rails app?
...
EDIT: Look at the comments and other answers. There are smarter answers than this one! Or try to improve this one as community wiki.
Models do not register themselves to a master object, so no, Rails does not have the list of models.
But you could st...