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Is Integer Immutable
I know this is probably very stupid, but a lot of places claim that the Integer class in Java is immutable, yet the following code:
...
For-each over an array in JavaScript
...tly (ES2015+)
See #4.
Create a true array
Other times, you may want to convert an array-like object into a true array. Doing that is surprisingly easy:
Use the slice method of arrays
We can use the slice method of arrays, which like the other methods mentioned above is "intentionally generic"...
How to construct a REST API that takes an array of id's for the resources
...bly one of the closest to the concept since it accomplishes all the constraints described here: en.wikipedia.org/wiki/…. You would only use CSV to represent arrays in requests, while the service responses should be serialized using XML or JSON. Are there any particular reasons why you don't consid...
Best practices for overriding isEqual: and hash
...
Start with
NSUInteger prime = 31;
NSUInteger result = 1;
Then for every primitive you do
result = prime * result + var
For objects you use 0 for nil and otherwise their hashcode.
result = prime * result + [var hash];
For boolean...
How can I do test setup using the testing package in Go
...
Given a simple function to unit test:
package math
func Sum(a, b int) int {
return a + b
}
You can test it with a setup function that returns teardown function. And after calling setup() you can make a deferred call to teardown().
package math
import "testing"
func setupTestCase(t...
Failed binder transaction when putting an bitmap dynamically in a widget
... caused because all the changes to the RemoteViews are serialised (e.g. setInt and setImageViewBitmap ). The bitmaps are also serialised into an internal bundle. Unfortunately this bundle has a very small size limit.
You can solve it by scaling down the image size this way:
public static Bitmap s...
Why is MATLAB so fast in matrix multiplication?
... 0.0229
>> gputimeit(@()gA*gA)
ans =
4.8019e-04
(NB: at some point (I forget when exactly) gpuArray switched from MAGMA to cuBLAS - MAGMA is still used for some gpuArray operations though)
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What is difference between functional and imperative programming languages?
...guage. For example, a program can be created to add a series of numbers:
int total = 0;
int number1 = 5;
int number2 = 10;
int number3 = 15;
total = number1 + number2 + number3;
Each statement changes the state of the program, from assigning values to each variable to the final addition of ...
What do two question marks together mean in C#?
...e an expression is a method call with side effects. (Credit to @Joey for pointing this out.)
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How do I get the type name of a generic type argument?
...tatic void Main(string[] args)
{
Console.WriteLine(MyMethod<int>());
Console.ReadKey();
}
}
Running the above prints (as expected):
System.Int32
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