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Merge pull request #1351 from def-/random-openarrays

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Add random() for openarrays
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Dominik Picheta 2014-08-13 21:12:12 +01:00
commit add0a0e9bc
1 changed files with 6 additions and 1 deletions
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lib/pure/math.nim
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@ -279,8 +279,13 @@ proc `mod`*(x, y: float): float =
result = if y == 0.0: x else: x - y * (x/y).floor result = if y == 0.0: x else: x - y * (x/y).floor
proc random*[T](x: TSlice[T]): T = proc random*[T](x: TSlice[T]): T =
## For a slice `a .. b` returns a value in the range `a .. b-1`.
result = random(x.b - x.a) + x.a result = random(x.b - x.a) + x.a
proc random[T](a: openarray[T]): T =
## returns a random element from the openarray `a`.
result = a[random(a.low..a.len)]
type type
TRunningStat* {.pure,final.} = object ## an accumulator for statistical data TRunningStat* {.pure,final.} = object ## an accumulator for statistical data
n*: int ## number of pushed data n*: int ## number of pushed data