Re: idiom for producing comma-seperated lists?

Ketil Z. Malde wrote:

Antony Courtney writes:

...

-- Example: format a list of strings, using a comma as a seperator: mkSepStr :: [String] -> String mkSepStr xs = foldrs (\x s -> x ++ ", " ++ s) "" xs

t0 = mkSepStr [] -- ==> "" t1 = mkSepStr ["hello"] -- ==> "hello" t2 = mkSepStr ["10","20","30"] -- ==> "10, 20, 30"

What do the rest of you do to solve this particular problem?

Uh, concat and intersperse?

Yep, that'll do the trick. Thanks for all the lightnin-fast responses. Appologies for overlooking this! -antony -- Antony Courtney Grad. Student, Dept. of Computer Science, Yale University antony@apocalypse.org http://www.apocalypse.org/pub/u/antony