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clarify splitSpan function

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Simon Michael 2014-04-14 08:31:34 -07:00
parent 746f22458f
commit 020975555e
1 changed files with 2 additions and 1 deletions
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hledger-lib/Hledger/Data/Dates.hs
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@ -123,7 +123,8 @@ spanEnd (DateSpan _ d) = d
spansSpan :: [DateSpan] -> DateSpan
spansSpan spans = DateSpan (maybe Nothing spanStart $ headMay spans) (maybe Nothing spanEnd $ lastMay spans)
-- | Split a DateSpan into one or more consecutive spans at the specified interval.
-- | Split a DateSpan into one or more consecutive whole spans of the specified length which enclose it.
-- If no interval is specified, the original span is returned.
splitSpan :: Interval -> DateSpan -> [DateSpan]
splitSpan _ (DateSpan Nothing Nothing) = [DateSpan Nothing Nothing]
splitSpan NoInterval s = [s]