24 May
2009
24 May
'09
7:17 p.m.
Sorry, I send it accidently. I did't finish my question. Anyway, when I run in GHCi: userRegistration ("Joao Claudino","1240",2) users
It gives me the exception: *** Exception: Prelude.head: empty list
Can anyone explain to me why the exception is thown and what should I do to fix it? Thanks -- ____________________________________________________________________________ Francisco Borges "Chicão" Junior .......................................................................................... http://pedepinico.blogspot.com .......................................................................................... "Quem de boa vontade carrega o difícil, também carrega o menos difícil..." Lao Tsé - Tao Te Ching