Re: [Pharo-users] can I write this without the three if then;s

Dec. 28, 2019

      It would be an overkill to do it for this particular case, but Smalltalk
makes it possible to implement a case-like construction:

[ expression ]
     when: [ :value | condition1 ] do: [-0do :value | ... ];
     when: [ :value | condition2 ] do: [ :value | ... ];
     otherwiseDo: [ :value | ... ];
     evaluate

I am sure, something like this has been implemented already somewhere
(maybe in Squeak?). Still not sure it is practical as compared to simple
if-s, and for sure not widely used :)
...On the other hand, sometimes the case-like construction can be
considered a more intension-revealing style.

Ð¿Ñ, 27 Ð´ÐµÐº. 2019 Ð³., 22:18 Roelof Wobben via Pharo-users <
pharo-users@lists.pharo.org>:
...
Hello,
Im trying to solve a challenge from exercism where  I have to calculate
the points somehow gets on a very simple darts board.
I solved it like this :
scoreX: anInteger y: anInteger2
    | distance |
    distance := (anInteger squared + anInteger2 squared) sqrt.
    distance > 10
        ifTrue: [ ^ 0 ].
    distance > 5
        ifTrue: [ ^ 1 ].
    distance > 1
        ifTrue: [ ^ 5 ].
    ^ 10
but now I use three if then and I think it's ugly code.
Is there a way I can make it more the smalltalk way ?
Regards,
Roelof

Re: [Pharo-users] can I write this without the three if then;s

Dennis Schetinin