Created
January 24, 2012 23:43
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class AdvancingTimeRange | |
def initialize(time = '2009-03-01') | |
@cursor = DateTime.parse(time) | |
end | |
def next(increment_by) | |
range = @cursor..@cursor + increment_by | |
@cursor = range.end | |
range | |
end | |
end |
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class AscendingRange | |
delegate :begin, :end, :to => @range | |
def initialize(begin = 1, end = 50_000) | |
@range = begin..end | |
end | |
def advance(by = 50_000) | |
@range = (@range.begin + by)..(@range.end + by) | |
end | |
end |
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class MonthSpan | |
def initialize(time = '2009-03-01') | |
@start = DateTime.parse(time) | |
end | |
def range | |
@start..@start + 1.month | |
end | |
def next | |
@start = @start + 1.month | |
range | |
end | |
end |
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