Syntax isn't introduced

[ejflick]

There's no point where the following syntax is introduced:

exercises-scalatutorial/src/main/scala/scalatutorial/sections/StandardLibrary.scala

Line 120 in 23b132f

val cond: (Int, Int) => Boolean = res0

Even trying to scour the internet, it's difficult to find the solution that's expected.

[sreenathchary]

I am facing the same problem here.....cond: (Int, Int) => Boolean = (...). seems to be the function to check if the first parameter is less than the second and if yes return true, else false....but how the hell do i reference the parameters in the function...all it needs is (x <=y) ...terrible way to learn Scala from here

[albertocamposblanco]

You need to make a statement similar to a map:

(x,y) => (x<y)

You assign x,y as your two parameters and map them to the comparison you want to run later.

Hope this helps.

[17hao]

I think (Int,Int) => Boolean means a type

You can understand it like a type(Int,Double,Long...)

the right answer is: val cond:(Int,Int)=>Boolean = (x:Int,y:Int)=>x<y

[milan-marinov-usu]

I had the same problem, this syntax is not previously introduced in the tutorial. Really not a good way to teach Scala. Thanks a lot to @albertocamposblanco, his solution was the key to complete the exercise: (x,y) => (x<y)

[tulth]

As a scala newbie, I found this confusing as well.
I expected the answer to be:

val cond: (Int, Int) => Boolean = <

Is there a way of referring to the lessThan operator function in the built-ins?

[Nboaram]

Yeah, I found this incredibly confusing as well, maybe an example of a similar condition being used earlier would help?