<@U0AAQKT9Q>?

# getting-started

[karelpeeters]

@ilya.gorbunov?

[ilya.gorbunov]

I've read several messages above and don't follow what is the question? About dot pattern? About limit parameter of split function?

[karelpeeters]

I think @leonardootto Is asking why the meaning of the limit parameter in Kotlin differs from its meaning it Java.

[karelpeeters]

Actually it looks like the only difference is that Javas version allows negative values while Kotlins does not.

[leonardootto]

Both api follow the regex implementation from Java.
But in kotlin you (?) create this validation:

nativePattern.split(input, if (limit == 0) -1 else limit).asList()

[leonardootto]

And i’m curious why you dont follow the Java behavior. 🙂

[leonardootto]

@ilya.gorbunov is ilya-g your github user?

[leonardootto]

https://github.com/JetBrains/kotlin/commit/01ace84070cdff5d119fe7bceab46829b599fa76

[ilya.gorbunov]

split from JDK removes empty trailing elements when limit is 0. In Kotlin we've decided to avoid this behavior as unintuitive, so limit=0 in Kotlin behaves as limit=-1 in Java

[leonardootto]

Ok. Do you have more examples of this changes? Unintuitive from Java and changed in Kotlin.

[leonardootto]

Or a way to me get this infos.

[ilya.gorbunov]

This is not a change, Pattern class in Kotlin is the same Pattern as in Java. Regex class on the other hand is a new API and has its own documentation describing its behavior.