Sha256: c59dd952bae789ac4c9792c86e0161414f1ae38ea6083405be588a417bcf8d14
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Size: 880 Bytes
Versions: 63
Compression:
Stored size: 880 Bytes
Contents
module Skylight
module Util
class UniformSample
include Enumerable
attr_reader :size, :count
def initialize(size)
@size = size
@count = 0
@values = []
end
def clear
@count = 0
@values.clear
self
end
def length
@size < @count ? @size : @count
end
def empty?
@count == 0
end
def each
i = 0
to = length
while i < to
yield @values[i]
i += 1
end
self
end
def <<(v)
if idx = increment!
@values[idx] = v
end
self
end
private
def increment!
c = (@count += 1)
if (c <= @size)
c - 1
else
r = rand(@count)
r if r < @size
end
end
end
end
end
Version data entries
63 entries across 63 versions & 1 rubygems