Map.get - KeyNotFound error

It is interesting how different languages approach towards a given problem.

Let's have a look at how different languages react while trying to read a key from dictionary

Java

map.get('key_that_does_not_exist')

=> null

Ruby

map['key_that_does_not_exist']

=> nil 

Python

>> x['key_that_does_not_exist'] Traceback (most recent call last):  File "<stdin>", line 1, in <module> KeyError: 'key_that_does_not_exist' >> x.get('key_that_does_not_exist) => None

Scala

val x = Map("a" -> "1”)

x("key_that_does_not_exist”) // Throws exception

x.get("key_that_does_not_exist”) // None