Maybe you should look into Parsec, a Haskell library for writing parsers. Google should find what you need.<br><br>- Phil<br><br><div class="gmail_quote">On Dec 9, 2007 1:58 AM, Ryan Bloor <<a href="mailto:ryanbloor@hotmail.com">
ryanbloor@hotmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>hi<br>
<br>
I have a function parseInt... which needs an error guard for when the input is not an Int.<br>
<br>
parseInt :: Parser<br>parseInt [] = []<br>parseInt xs = let (digits, rest) = span isDigit (removeSpace xs)<br> in [(EInt (read digits), removeSpace rest)]<br>
<br>
Also... I have a function that does this... parseBinaryOp "+" "(5 + 2) if" gives...[(Int 5, Int 2, "if")]<br>
so, op is '+' or "&&". I am unsure of how to begin... <br>
<br>
parseBinaryOp :: String -> String -> [(Expr, Expr, String)]<br>parseBinaryOp op str<br>
<br>
Thankyou<br>
<br>
Ryan<br><br><hr>Get closer to the jungle… <a href="http://entertainment.uk.msn.com/tv/realitytv/im-a-celebrity/" target="_blank">I'm a Celebrity Get Me Out Of Here!</a></div>
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