quartz/content/Obsidian Vault/lambda.md

#cs240

Sometimes we need to take an object as a parameter, and we want to build the method on the spot.

interface Runnable {
	
	void run();
}

void someMethod(Runnable r) {
	...
	r.run();
	...
}

So we might want to do it like this:

x.someMethod(new Runnable() {
	public run() {
		// do your thing
	}
});

but instead, use a lambda:

x.someMethod(() -> {
	// do some stuff
});