Hello,

I' a Haskell Newbie and i need some help about a function..
My problem is to update a list of values in Runtime.
For example i have a initial list:
list1=3D"a"=20

and a function:
add::add::String->[String]
add x =3D [list1] ++ [x]=20

I need to do=20
add "c"=20

and the "c" most be append to list1
to make list1=3D["a","c"]

Then if i input
list1
the output must be
["a","c"]

But i can't do it...
Could you help me ?!