CODEWITHSUNDEEP
ats
user7042412
user7042412

Reputation:

What is the meaning of g0ofg1?

I often see code like the following line in ATS:

val xs = g0ofg1(xs)

The function g0ofg1 looks like some kind of casting. What does it actually do?

Upvotes: 1

Views: 153

Answers (1)

Artyom Shalkhakov
Artyom Shalkhakov

Reputation: 1101

This is an overloaded symbol.

There are many types in ATS for which there exist an indexed and a non-indexed variant.

  • For instance, there exists int(i) (for some i of sort int) and int. Both types are for integers, but the former is indexed by int sort.
  • Another example: string (just a string) and string(n) (length-indexed string)

g0ofg1 is for converting an indexed type into a non-indexed one. It's a castfn, so this operation has no runtime cost associated with it.

g1ofg0 is for going in the other direction: from non-indexed to indexed type.

Upvotes: 2

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