Christopher Lane Hinson wrote:
Here's an error the Haskell run-time system might throw:
*** Exception: Prelude.head: empty list
(or whatever)
So now what? Action plan = [].
rgrep " head " .
Lists 17 items for three projects I've been working on summing to
10000 lines of haskell. Use listToMaybe or pattern matching and
-Wall, and raise an explicit (error "with explanation"), which is all
good practice in the C world as well. Please, don't make undocumented
use of partial functions in serious code.
You're absolutely right, and the compiler can warn the programmer for
such mistakes. However, I've found that analysing the run-time
behaviour/errors (if they do occur) in a Haskell program to be harder
than in a language like C(++) which has many very mature engineering
tools available. No doubt this is a matter of time and money, not which
language is better suited for "real work".
Regards,
Niels
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