When to use call-by-name and call-by-value?

Question

I understand the basic concept of call-by-name and call-by-value, and I have also looked into handful number of examples. However, I am not very clear about when to use call-by-

Answer 1

The simple way it might be explained is

call-by-value functions compute the passed-in expression's value before calling the function, thus the same value is accessed every time. However, call-by-name functions recompute the passed-in expression's value every time it is accessed.

I've always thought this terminology is needlessly confusing. A function can have multiple parameters which vary in their call-by-name vs call-by-value status. So it's not that a function is call-by-name or call-by-value, it's that each of its parameters may be pass-by-name or pass-by-value. Furthermore, "call-by-name" has nothing to do with names. => Int is a different type from Int; it's "function of no arguments that will generate an Int" vs just Int. Once you've got first-class functions you don't need to invent call-by-name terminology to describe this.