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authorJoris2019-05-01 15:52:32 +0200
committerJoris2019-05-01 17:11:02 +0200
commit23f04635cc26e1b0553088f28553f518488a9fc8 (patch)
tree97037643bab24564046ce4aba90481e3b92a15d3 /src/Model/Date.hs
parent0fe906ae7453aa684e998bbcc7a78b62d84f0206 (diff)
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Diffstat (limited to 'src/Model/Date.hs')
-rw-r--r--src/Model/Date.hs30
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diff --git a/src/Model/Date.hs b/src/Model/Date.hs
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--- a/src/Model/Date.hs
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@@ -1,30 +0,0 @@
-{-# LANGUAGE DeriveGeneric #-}
-
-module Model.Date where
-
-import GHC.Generics
-import Data.Yaml
-
-data Date = Date
- { month :: Int
- , year :: Int
- } deriving (Show, Read, Eq, Generic)
-
-yearAndMonthDiff :: Date -> Date -> (Int, Int)
-yearAndMonthDiff d1 d2 =
- let totalMonths = monthDiff d1 d2
- in (totalMonths `div` 12, totalMonths `mod` 12)
-
-monthDiff :: Date -> Date -> Int
-monthDiff (Date m1 y1) (Date m2 y2) =
- if y1 == y2 then
- 1 + abs (m1 - m2)
- else
- let (minM, minY, maxM, maxY) =
- if y1 < y2 then
- (m1, y1, m2, y2)
- else
- (m2, y2, m1, y1)
- in 12 * (maxY - minY - 1) + (13 - minM) + maxM
-
-instance FromJSON Date