[web-devel] safety of Data.Ascii.unsafeFromString

Max Cantor mxcantor at gmail.com
Thu Jun 9 13:10:34 CEST 2011

so, if i want to take the FileContentType from FileInfo, which is from fileField in forms, which is a Data.Text and convert that to a contentType to use in sendFile (which takes a ContentType which is a Data.ByteString), what is the preferred way to do that?


On Jun 9, 2011, at 7:07 PM, Michael Snoyman wrote:

> You don't even get a runtime exception: your results are silently
> broken. It's no worse than Data.ByteString.Char8.pack.
> But the ascii package isn't really being used going forward, people
> didn't like the extra noise it added to their code.
> Michael
> On Thu, Jun 9, 2011 at 2:04 PM, Max Cantor <mxcantor at gmail.com> wrote:
>> just how unsafe are the unsafeXXX functions in Data.Ascii?  IS it just that you might get a runtime exception or could they do some more serious damage somehow?
>> max
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