Sha256: 19b71518dbeaf331524aa85c1721cb76687a0f8d6cf80384c081461036005e65
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Size: 1017 Bytes
Versions: 28
Compression:
Stored size: 1017 Bytes
Contents
module Bluepill
module Util
class RotationalArray < Array
def initialize(size)
super(size)
@capacity = size
@counter = 0
end
def push(value)
idx = rotational_idx(@counter)
self[idx] = value
@counter += 1
self
end
alias_method :<<, :push
def pop
raise "Cannot call pop on a rotational array"
end
def shift
raise "Cannot call shift on a rotational array"
end
def unshift
raise "Cannot call unshift on a rotational array"
end
def last
return if @counter.zero?
self[rotational_idx(@counter - 1)]
end
def first
return if @counter.zero?
return self[0] if @counter <= @capacity
self[rotational_idx(@counter)]
end
def clear
@counter = 0
super
end
private
def rotational_idx(idx)
idx % @capacity
end
end
end
end
Version data entries
28 entries across 28 versions & 2 rubygems