Coursera

REPL

displayError()

ant -f update_dependencies.xml

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
Buildfile: update_dependencies.xml does not exist!
Build failed

T

klass

fun <T> getProperty(klass: KClass<*>): T? {
        return properties.find { it::class == klass } as T?
    }

entity.getProperty<String>(String::class)

entity.getProperty(String::class)

class A1(private val x: Int) {
    private val y: Int = 0
}

public final class A1 {
    private final int y;
    private final int x;

    public A1(int x) {
        this.x = x;
    }
}

class A2(private val x: Int) {
    private val y: Int
    init {
        y = 0
    }
}

public final class A2 {
    private final int y;
    private final int x;

    public A2(int x) {
        this.x = x;
        this.y = 0;
    }
}

y=0

A2

A1

)

a ?: let {} ?: return b

c

functionThatTakesAVarargAsParameter(*fictionData )

arrayOf

fun List<E>.getDifference(other: List<E>) = this.union(other) - this.intersect(other)

if (f.value in from..to && !c.isEmpty)

Type interference failed

fun notEmptyFieldInRange(from: UByte, to: UByte): Boolean {
        for ((f, c) in fields)
            if (f.value >= from && f.value <= to && !c.isEmpty)
                return true
        return false
    }

val o = object{}
val mm = o.javaClass.declaredMethods

Stateful by state()

class MySuperCoolActivity : Activity(), Stateful by state()

state()

internal