There was a long discussion about similar request here.
My own opinion is that it is a bad idea (event ignoring the fact that it is not possible in kotlin due to syntax ambiguity). Currently all control constructs in kotlin like if, while and for are almost equivalent of global functions and it is a good thing since its limits the number of language constructs. I would event go further and propose to replace for(a: collection){} with for(collection){a->} to make it completely like function, but this is not necessary.
2 Likes