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Add optional recursive arg to distinctBase (v2) (#18659)

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* Add optional recursive arg to distinctBase
* Add docs and examples

Co-authored-by: ALANVF <alan.invents@gmail.com>
This commit is contained in:
Timothee Cour
2021-08-08 23:51:39 -07:00
committed by GitHub
parent 988c02b7cb
commit 8ce782d463
4 changed files with 18 additions and 10 deletions
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4
lib/std/jsonutils.nim
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@@ -78,8 +78,8 @@ proc initToJsonOptions*(): ToJsonOptions =
## initializes `ToJsonOptions` with sane options.
ToJsonOptions(enumMode: joptEnumOrd, jsonNodeMode: joptJsonNodeAsRef)
proc distinctBase(T: typedesc): typedesc {.magic: "TypeTrait".}
template distinctBase[T](a: T): untyped = distinctBase(typeof(a))(a)
proc distinctBase(T: typedesc, recursive: static bool = true): typedesc {.magic: "TypeTrait".}
template distinctBase[T](a: T, recursive: static bool = true): untyped = distinctBase(typeof(a), recursive)(a)
macro getDiscriminants(a: typedesc): seq[string] =
## return the discriminant keys