juhp
Effective Haskell: ch2 combineLists (page 66)
On p66 of B9.0 chapter 2:
combineLists as bs =
let a = head as
b = head bs
as' = tail as
bs' = tail bs
in if null as || null bs
then []
else (a,b) : combineLists as' bs'
I find this let clause a bit of an eyesore given that head and tail are not safe.
How about moving the let clause into the else branch (or possibly a where)? Or is it better just to drop those local variables completely?
First Post!
RebeccaSkinner
Author of Effective Haskell
Thanks. It’s sometimes hard to figure out how to format these early examples. I think being verbosely explicit here helps people build an intuition up.
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