Haskell
ghc 8.4.2
$ ghc prog.hs -o prog.exe -Wall
[1 of 1] Compiling Main ( prog.hs, prog.o ) Linking prog.exe ... Date {year = 2019, month = 10, day = 16} 2019 Date {year = 2019, month = 11, day = 16}
[1 of 1] Compiling Main ( prog.hs, prog.o ) Linking prog.exe ...
Date {year = 2019, month = 10, day = 16} 2019 Date {year = 2019, month = 11, day = 16}