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4660 :: template does not create methods?

• teras (orginal) [2019-02-16T13:44:55+01:00] view original

  Again, please excuse my ignorance, nim newbie here!

  I am trying to understand why this code does not work. Maybe I'm too much spoilt of #define under C :) So, is this just a hard language restriction or am I missing something?

  type
    Base = ref object of RootObj
    Child = ref object of Base
  
  method test(self:Base): int {.base.}= 0
  
  template builder(otype:untyped): int =
    method test(self:otype): int = -1
  
  builder(Child)
  Run

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• mashingan (orginal) [2019-02-16T13:57:26+01:00] view original

  Change the return template from int to untyped . I usually think untyped as unchecked for easy understanding but let's wait for other to explain better ;)

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• teras (orginal) [2019-02-16T18:20:02+01:00] view original

  That's it. Thank you!

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• Udiknedormin (orginal) [2019-02-16T22:25:20+01:00] view original

  Your builder doesn't return int, it returns some proc returning int. As simple as that.

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