Chapter 5, Problem 20RQ

Explanation of Solution

let construct in F#:

In F# the let construct’s form is.

let left_side = expression

Here, left_side may be name or any tuple pattern. The scope of name declared inside the function is from the end of declared expression to the end of the function.

Example:

let x =

let y = 1

let z = y+2

z;;

let a = z+x;;

Here in example scope of x is all over the code, but scope of y and z is till the indentation. Line of let x is value bounded to x and can be any expression...