[Haskell-cafe] Prelude.head: empty list
k-bx at k-bx.com
Thu Mar 17 12:30:06 UTC 2016
Always using `headNote` from `safe` package works good enough usually.
On Fri, Mar 11, 2016 at 5:56 PM, Han Joosten <han.joosten.han at gmail.com>
> In a rather large program I made some changes, and now I get the runtime
> ampersand.exe: Prelude.head: empty list
> Of course I know that head is partial, and should be used with care. It is
> used many times (we have 100+ modules in the program). Is there an elegant
> way to get some information about where the specific call to head is being
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Haskell-Cafe