Nuno Santos wrote:
Hi,
I have this basic question of how to print the character " without
the backslash.
I'm trying to print html code, so i need " a lot.
giveHtml (Leaf (a,(b,c))) = "<frame src=\"\" name=\"" ++ [a] ++ "\"
scrolling=\"No\" noresize=\"noresize\" id=\"" ++ [a] ++ "\" title=\""
++ [a] ++ "\" />"
Can anybody give me a light here?
One way would be to define a helper function to write an opening tag given
the tag name and a list of (var,value) pairs:
tag :: String -> [(String,String)] -> String
tag t ps = "<" ++ t ++ " "
++ concatMap (\(var, value) -> var ++ "=\"" ++ value ++ "\" ") ps
++ ">"
then your code would become escape free:
giveHtml (Leaf (a,(b,c))) =
tag "frame"
[ ("src", "")
, ("name", [a])
, ("scrolling", "No")
, ("noresize", "noresize")
, ("id", [a])
, ("title", [a])
]
Regards, Brian.
--
Logic empowers us and Love gives us purpose.
Yet still phantoms restless for eras long past,
congealed in the present in unthought forms,
strive mightily unseen to destroy us.
http://www.metamilk.com
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