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How can I create tests in Android Studio?
...yClass {
public int add(int a, int b) {
return a + b;
}
}
Now change the addition_isCorrect() method in the test class to be like the following code (or just add another method with a different name):
public class ExampleUnitTest {
@Test
public void addition_isCorrect() thro...
What does 'var that = this;' mean in JavaScript?
...r.active = false;
var activateStarter = function(){
// 'this' now points to the global scope
// 'this.starter' is undefined, so we use 'that' instead.
that.starter.active = true;
// you could also use car.starter, but using 'that' gives
// us more consis...
Kotlin: how to pass a function as parameter to another?
...to foo
fun something() {
foo("hi", ::buz)
}
Since Kotlin 1.1 you can now use functions that are class members ("Bound Callable References"), by prefixing the function reference operator with the instance:
foo("hi", OtherClass()::buz)
foo("hi", thatOtherThing::buz)
foo("hi", this::buz)
...
How to get current time and date in Android
...an (but no longer should - see below!) use android.text.format.Time:
Time now = new Time();
now.setToNow();
From the reference linked above:
The Time class is a faster replacement
for the java.util.Calendar and
java.util.GregorianCalendar classes.
An instance of the Time class
represe...
How can I maintain fragment state when added to the back stack?
...loper.android.com/guide/components/fragments.html I'm fighting this issue now, and I don't see any methods called when returning a fragment from the backstack. (Android 4.2)
– Colin M.
Nov 26 '12 at 21:13
...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... are a lot of variables and b) impossible when the variable names are not known (e.g. in a function that processes any data.frame).
...
Why are only final variables accessible in anonymous class?
...r Java 7, keep in mind that with Java 8, closures have been introduced and now it is indeed possible to access a non-final field of a class from its inner class.
– Mathias Bader
Oct 24 '14 at 14:41
...
Synchronizing a local Git repository with a remote one
... @SergiySokolenko that's what we all say, but deep down we know SO has become more convenient that man pages :-P
– Marcello Romani
Dec 31 '18 at 14:50
...
How to make a chain of function decorators?
... #Python's functions are objects
Functions references
Okay, still here? Now the fun part...
You’ve seen that functions are objects. Therefore, functions:
can be assigned to a variable
can be defined in another function
That means that a function can return another function.
def getTalk(ki...
Javascript date.getYear() returns 111 in 2011? [duplicate]
...be entirely honest, I suspect it was probably me who read W3Schools. Every now and again I delve into there and usually begin regretting it fairly quickly.
– Mark Henderson
Jul 24 '12 at 21:57
...