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How to debug stream().map(…) with lambda expressions?
...sually have no problem debugging lambda expressions while using Eclipse or IntelliJ IDEA. Just set a breakpoint and be sure not to inspect the whole lambda expression (inspect only the lambda body).
Another approach is to use peek to inspect the elements of the stream:
List<Integer> natur...
UITableViewHeaderFooterView: Unable to change background color
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You should either use myTableViewHeaderFooterView.tintColor, or assign a custom background view to myTableViewHeaderFooterView.backgroundView.
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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
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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
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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...
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:
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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...
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 ...
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 the purpose of AsQueryable()?
...ready capable of providing an enumeration capability), why would I need to convert to IQueryable using the extension method AsQueryable()? Maybe a small code example to illustrate where this would come in handy? I seem to be missing something in your explanation. Thanks for your time.
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