<div dir="ltr">Bjorn,<br>I am initializing a list from a file. I am reading the lines from the file, splitting them into bytestring and then converting them to float. Should I be using String -> Float or ByteString -> Float?<br>
<br>thanks<br>Daryoush<br><br><div class="gmail_quote">On Tue, Aug 26, 2008 at 6:01 AM, Bjorn Bringert <span dir="ltr"><<a href="mailto:bjorn@bringert.net">bjorn@bringert.net</a>></span> 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 class="Ih2E3d">2008/8/24 Daryoush Mehrtash <<a href="mailto:dmehrtash@gmail.com">dmehrtash@gmail.com</a>>:<br>
</div><div><div></div><div class="Wj3C7c">> I am trying to convert a string to a float. It seems that Data.ByteString<br>
> library only supports readInt. After some googling I came accross a<br>
> possibloe implementation: <a href="http://sequence.svcs.cs.pdx.edu/node/373" target="_blank">http://sequence.svcs.cs.pdx.edu/node/373</a><br>
><br>
> My questions are:<br>
><br>
> a) is there a standard library implementation of string -> Double and float?<br>
> b) Why is it that the ByteString only supports readInt? Is there a reason<br>
> for it?<br>
<br>
</div></div>Hi Daryoush,<br>
<br>
are you really looking for ByteString -> Float conversion, or just<br>
plain String -> Float? The latter is really simple, the function is<br>
called 'read' and is available in the Prelude:<br>
<br>
$ ghci<br>
GHCi, version 6.8.3: <a href="http://www.haskell.org/ghc/" target="_blank">http://www.haskell.org/ghc/</a> :? for help<br>
Loading package base ... linking ... done.<br>
Prelude> read "3.14" :: Float<br>
3.14<br>
<font color="#888888"><br>
/Bjorn<br>
</font></blockquote></div><br>/<br>
</div>