A modern programming language that makes developers happier.

kotlinlang

plus 1 million to this. errors caused by a misread/mis-written bang are the worst and totally stupid in 2017

My dream language simply has `not` as a keyword

create an issue on youtrack, we'll vote it

I don't want Kotlin to be more like Visual Basic :&lt;

Visual Basic's nonsensical verbosity is bad in most cases.  This is probably not one of them :stuck_out_tongue:

I'll remind you of that when newcomers are debating whether to use `is not Nothing` or `!= null`, or questioning why `is not null` doesn't work :p

I don't think we want to touch the semantics of `is`, I think mg6maciej was simply using that for verbosity. I think `a !in b` becomes `a not in b`, where `not` is highlighted by your editor in nice big blue or orange colour.

Did you know you can do that with colors on Slack? :slightly_smiling_face:

Guess what's the reason library designers add `isNotEmpty` in addition to `isEmpty`? Because `list.isNotEmpty()` more readable than `!list.isEmpty()`

`not list.isEmpty()` wouldn't have such problems.