Sorry, me again, hope people don't mind. In the JetBrains tutorial it has the following code `*val* ...

# getting-started

[Ben Edwards]

Sorry, me again, hope people don't mind.
In the JetBrains tutorial it has the following code
*val* reader = FileReader("test.txt")
reader.*use* {
reader.read()
}
Which can be replaced by
FileReader("test.txt").use { reader -> read("something") }
Which I am confused by, what is "something" referring to?

[Joffrey]

I think that must be a mistake

[Ben Edwards]

Certainly felt like they may be, so what should it be?

[Ben Edwards]

FileReader("test.txt").use { reader -> read() }

[Matthew Gast]

You'll probably want to use reader.read() as use is does not scope Reader but passes it as a parameter (which is what the reader -> is).

[Joffrey]

Matthew is right. You should use either of those:
FileReader("test.txt").use { reader -> reader.read() }
FileReader("test.txt").use { it.read() }

[Ruckus]

Or, with a function reference

FileReader("test.txt").use(Reader::read)

[ilya.gorbunov]

Since use passes its receiver as a parameter to the provided lambda, the following two are equivalent:
reader.use { reader.read() }
and
reader.use { it.read() }