add overlap functionality to Timex.Interval #493
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glassbead0
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heyZeus
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lib/interval/interval.ex
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| @@ -382,6 +382,71 @@ defmodule Timex.Interval do | |||
| def max(%__MODULE__{until: until, right_open: false}), do: until | |||
| def max(%__MODULE__{until: until}), do: Timex.shift(until, microseconds: -1) | |||
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| @doc """ | |||
| Returns an Interval representing the intersection between two intervals. | |||
| If the intervals do not overlap, reutrn {:error, :no_overlap_interval}. | |||
heyZeus
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lib/interval/interval.ex
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| @doc """ | ||
| When calculating overlap, if two intervals share a `from` (or `until`), the overlap | ||
| interval should have a bound matching the "inner" interval (eg: if either inteval has |
* Find the overlap Interval between two intervals.
* Return {:error, :no_overlap_interval} if intervals
do not overlap, (including overlapping at one instant)
glassbead0
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pezra
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| Returns an Interval representing the intersection between two intervals. | ||
| If the intervals do not overlap, return {:error, :no_overlap_interval}. | ||
| If the intervals overlap at a single instant (regardless of open/closed | ||
| bounds), also return {:error, :no_overlap_interval} |
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Perhaps it should return 0 in the case of no overlap rather than an error? Two intervals not overlapping doesn't seem like an error to me.
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Summary of changes
do not overlap, (including overlapping at one instant)
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