[Haskell-beginners] Pattern Matching for record syntax

[Magnus Therning]

Jeon-Young Kang writes:

> For pattern matching.. I implemented like this.
>
> compareName a (Person name age)
>         | (a == name) = age
>
> but, I got stuck how to apply pattern matching for the two lists.
> i.e., both names and persons are lists.
>
> I really appreciate your advice..

Something like this works:

    map age $ filter (\ p -> (name p) `elem` names) persons

/M

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Magnus Therning              OpenPGP: 0x927912051716CE39
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