[Haskell-cafe] How to solve this problem?It's quite easy in PHP.

[Donald Bruce Stewart]

keepbal:
> 
>    For example,
>    -----------------------------------
>    <?php
>    //test.php
>    require ("tiny.php");//Tiny is a small template engine.
>    $tn=new Tiny();
>    $arr=new Array();
>    $arr['a']='1';
>    $arr['b']='2';
>    $arr['c']='3';
>    $tn->set('arr',$arr);
>    $tn->show('_test.php');
>    ?>
>    -----------------------------------
>    <?php require('_header.php');?>
>    <?php
>    foreach($arr as $key => $val){
>        echo "$key = $val <br>";
>    }
>    ?>
>    <?php require('_footer.php');?>
>    -----------------------------------
>    a = 1
>    b = 2
>    c = 3
>    -----------------------------------

Doesn't look that easy. I guess its not too bad though.

Anyway, here's Data.Map for you:


    import Data.Map
    import Text.Printf

    m = fromList (zip "abc" [1..])

    main = mapM_ draw (toList m)

    draw (k,v) = printf "%c = %d\n" k (v :: Int)

And if you want to run this:

    $ runhaskell A.hs
    a = 1
    b = 2
    c = 3