Assume that you have the following snippet of F# code:
let thing(a, b) = let boo(a, b) = let bump = 4 bump + a + b let baz(a, b) = a * b boo(a,b) - baz(a,b) System.Console.WriteLine(thing(10, 5))
What can you say about this little "program"? (Note that you don't have to be an F# expert to answer this question - this is a conceptual question)

Question

Assume that you have the following snippet of F# code: 
 let  thing(a, b) =      let  boo(a, b) =           let  bump = 4         bump + a + b      let  baz(a, b) = a * b     boo(a,b) - baz(a,b) System.Console.WriteLine(thing(10, 5)) 
 What can you say about this little "program"? (Note that you don't have to be an F# expert to answer this question - this is a conceptual question)

Accepted Answer

This is a perfectly valid structure for a functional language like F# and the  WriteLine  method would display the result of the calculation produced by invoking  thing (10, 5)

Answer

This can not compile/run since  bump  is nested too deeply to be accessed by  thing

Answer

This can not compile/run since you can not nest  let  expressions inside of one another

Answer

This can not compile/run since  thing  is not in the same scope as the  Writeline  method.

Answer

This can not compile/run since you can not have two  let  expressions like  boo  and  baz  in the same scope

Crowdly

Assume that you have the following snippet of F# code: let thing(a, b) = ...

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