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programming-languagesprototypeiolanguage

In Io language, what's the difference between 1 proto and 1 type?

Io> 1 proto == Number
==> true
Io> 1 type == Number
==> false
Io> 1 proto
==> 0
Io> 1 type
==> Number

I'm very confused about this. Does anyone have ideas about this?

Solution

  • It's because type is a sequence whereas protos are a list of objects.

    Io> (1 proto) type
==> Number

Io> 1 hasProto("Number")
==> false

Io> 1 hasProto(Number)
==> true

Io> (1 type) type
==> Sequence

Io> 1 type == "Number"
==> true

    What is interesting is that...

    Io> 1 protos
==> list(0)

    ... instead of returning list(Number). But with 0 (zero) being a Number object then I suspects this doesn't cause protos a problem!