How does one redirect input to a kotlin program? I...

# codeforces

[Gautam Roy]

How does one redirect input to a kotlin program? I want the equivalent of this, so that I can try out my code locally https://stackoverflow.com/a/54084856

[elizarov]

It does not work work from dialog yet, see: https://youtrack.jetbrains.com/issue/KT-28854

[elizarov]

What I do is I make move my solution into a separate solve function, make in extension on BufferedReader and then write in `main`:

fun main() {
    File("....").bufferedReader().use { it.solve() }
}

[elizarov]

fun BufferedReader.solve() { 
    readLine() // now it reads from file!
}

[Gautam Roy]

makes sense thanks

[Gautam Roy]

This doesn’t work for me. The program is stuck on first invocation of readLine()

[elizarov]

You have to call readLine from a function that is extension on BufferedReader.

[Gautam Roy]

Yeah was doing that, but still doesn’t work
https://pastebin.com/fAghCPXX

[elizarov]

You are calling readLine from readInts which is not extension on BufferedReader.

[Gautam Roy]

Hmm, still doesn’t work https://pastebin.com/SY6uR42S

[elizarov]

Now you are calling kotlin.io.readLine() instead of calling readLine() on BufferedReader which you've added as your extension receiver.