Iftype conditions (RFC 26) #1855
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Praetonus
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changelog - added
jemc
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Apr 21, 2017
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@jemc That's right, I'll add that. |
These new conditions allow programmers to get information on subtyping relationships of type parameters at compile time to conditionally compile code. Most of the work is done during the scope pass, where the definition assigned to a type parameter reference differs based on whether the reference occurs in the then clause of an iftype condition. This change implements only a part of RFC 26. Method specialisation is still to be implemented.
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@Praetonus i didn't detail this in the release notes. i'm saving that til all the functionality and documentation is done, however, i am going to have an item about this in "last week in pony" so the adventurous could start trying it out. |
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These new conditions allow programmers to get information on subtyping relationships of type parameters at compile time to conditionally compile code.
Most of the work is done during the scope pass, where the definition assigned to a type parameter reference differs based on whether the reference occurs in the then clause of an iftype condition.
This change implements only a part of RFC 26. Method specialisation is still to be implemented.