[squeak-dev] Boolean whenTrue:whenFalse:
Nicolas Cellier
nicolas.cellier.aka.nice at gmail.com
Tue May 14 14:23:34 UTC 2019
Hi,
>From time to time, I need to perform some additional action (side effect)
when a boolean is true, but preserve that boolean as return value.
Here is a pseudo example:
self findLast: [:each |
| conforming |
conforming := self testSomeConditionFor: each.
conforming
ifTrue:
[ "found one, do some side effect before searching next"
self performSomeAction: each ].
conforming ].
Or shorter, but I dislike the redundant true:
self findLast: [:each |
(self testSomeConditionFor: each)
and:
[ "found one, do some side effect before searching next"
self performSomeAction: each.
true ]].
What i seek is even shorter:
self findLast: [:each |
(self testSomeConditionFor: each)
whenTrue:
[ "found one, do some side effect before searching next"
self performSomeAction: each ]].
Of course, we would have companions whenFalse:, whenTrue:whenFalse:...
Would you buy it?
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