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3749 :: how to CT-initialize a tuple given it's type T ? const bar=T() doesn't work

• timothee (orginal) [2018-04-13T00:04:35+02:00] view original

  how to initialize at Compile Time a tuple given it's type T ?

  with object we can do const a = T() but let a=(1,2) type T=a.type

  const a2=T() doesn't work

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• timothee (orginal) [2018-04-13T00:45:32+02:00] view original

  this works:

  proc doInit[T]():auto=
    var a: T
    return a
  
  let a=(1,2)
  const a2=doInit[a.type]()
  Run

  • is that somewhere in nim standard library? if no, shouldn't we add it, as a convenience to create a default initialized instance for any type? (analog to D's T.init)
  • see also https://github.com/nim-lang/Nim/issues/7590 which i ran into while using this plus fields

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