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system.nim improvement: make 'len' work with heterogenous slices

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Andreas Rumpf 2017-11-01 11:53:09 +01:00
commit f90df170e3
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lib/system.nim
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@ -2089,7 +2089,7 @@ proc clamp*[T](x, a, b: T): T =
if x > b: return b if x > b: return b
return x return x
proc len*[T: Ordinal](x: HSlice[T, T]): int {.noSideEffect, inline.} = proc len*[U: Ordinal; V: Ordinal](x: HSlice[U, V]): int {.noSideEffect, inline.} =
## length of ordinal slice, when x.b < x.a returns zero length ## length of ordinal slice, when x.b < x.a returns zero length
## ##
## .. code-block:: Nim ## .. code-block:: Nim