Jira (PUP-514) Add optional type to parameters

Henrik Lindberg (JIRA) Thu, 20 Mar 2014 18:30:07 -0700

Title: Message Title

Henrik Lindberg commented on an issue

That syntax is what I also expect it to have (not that you have to assign to it to make it typed - in fact, in that case it could be automatically typed to the type of the given value if we want to, the user could widen the type if required)

                                                    define foo($var = 1) { ... }
foo { 'this_is_my_foo':
  var => 'batman'
}

                                                

Would fail with an error with something like: 'String "batman" not assignable to Integer foo::var'

Which could be widened:

                                                    define foo(Scalar $var = 1) { ... }
foo { 'this_is_my_foo':
  var => 'batman'
}

                                                

Now it works because String and Integer are both Scalar. (And you would use Object to widen to anything).

On second thought though, users can then not opt out of typing when they use defaults... ah - well... guess this
type inference is off the table for that reason.

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Puppet /

PUP-514

It is of great value to be able to optionally type the parameters of defines and classes (as well as types).

This is quite easy to implement as there now is a type system.
The default type is Data.

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Jira (PUP-514) Add optional type to parameters

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