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Objective-C: Property / instance variable in category
...e, it wouldn't work.
Fortunately, the Objective-C runtime has this thing called Associated Objects that can do exactly what you're wanting:
#import <objc/runtime.h>
static void *MyClassResultKey;
@implementation MyClass
- (NSString *)test {
NSString *result = objc_getAssociatedObject(sel...
Preventing console window from closing on Visual Studio C/C++ Console application
... (15.9.4) there is an option:
Tools->Options->Debugging->Automatically close the console
The corresponding fragment from the Visual Studio documentation:
Automatically close the console when debugging stops:
Tells Visual Studio to close the console at the end of a debugging session.
...
How is this fibonacci-function memoized?
...nacci definition, fib n = fib (n-1) + fib (n-2), the function itself gets called, twice from the top, causing the exponential explosion. But with that trick, we set out a list for the interim results, and go "through the list":
fib n = (xs!!(n-1)) + (xs!!(n-2)) where xs = 0:1:map fib [2..]
The tr...
input type=“submit” Vs button tag are they interchangeable?
...an INPUT element whose type is set to "image", but the BUTTON element type allows content.
So for functionality only they're interchangeable!
(Don't forget, type="submit" is the default with button, so leave it off!)
shar...
Can't start Eclipse - Java was started but returned exit code=13
...ng Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago.
44 Answers
...
JavaFX and OpenJDK
...s a modular library accessed from an existing JDK (such as an Open JDK installation).
The open source code repository for JavaFX is at https://github.com/openjdk/jfx.
At the source location linked, you can find license files for open JavaFX (currently this license matches the license for OpenJDK...
What is the difference between Numpy's array() and asarray() functions?
... use one rather than the other? They seem to generate identical output for all the inputs I can think of.
6 Answers
...
Struct like objects in Java
...ck such methods in your tests. If you create a new class you might not see all possible actions. It's like defensive programming - someday getters and setters may be helpful, and it doesn't cost a lot to create/use them. So they are sometimes useful.
In practice, most fields have simple getters and...
Generate random numbers with a given (numerical) distribution
...> choices(population, weights)
4
The optional keyword-only argument k allows one to request more than one sample at once. This is valuable because there's some preparatory work that random.choices has to do every time it's called, prior to generating any samples; by generating many samples at o...
How to disable Golang unused import error
...
Adding an underscore (_) before a package name will ignore the unused import error.
Here is an example of how you could use it:
import (
"log"
"database/sql"
_ "github.com/go-sql-driver/mysql"
)
To import a package solely for i...