As a beginner to Android app development, I am finding code examples that do not identify whether they are written in Java or Kotlin. Even StackOverflow questions frequently omit the language tag.
Is there an easy "tell" in the code where you can immediately see which language is used? For example, I can distinguish C and C++ very quickly from certain elements of the syntax, header use, and library functions.
Are there any quick and "obvious" ways to distinguish Java from Kotlin? I want to be exploring Kotlin and not adding to my (immense) confusion by studying irrelevant code.
some obvious traits for kotlin:
as already mentioned the most obvious is semicolons, although you can add them and they will just be ignored
variables marked with question marks (nullability) val foo:String? and the usage of val/var/lateinit
class Foo : Something() <-- this is inheritance, there's no extends
or implements
if files are involved, kotlin files end with .kt
any reference to companion object
personally for me the biggest indicator:
fun :) function declaration :
fun foo(): String