Le 14 mars 2015 12:16, "Sebastian Sastre" <sebast...@flowingconcept.com> a écrit : > > In such cases I might use a stream and monitor the `stream position` and iterate with > > [ stream atEnd ] whileFalse: [ > item := stream next. > stream position even ifTrue: [ self highlight: item ]. > .... ] >
Exactly! Streams and collections are perfect for that. And they can even do: ReadStream class >> on:from:to: or upTo: etc. Phil > from mobile > > > On 10/03/2015, at 09:11, Sanjay Minni <s...@planage.com> wrote: > > > > Hi > > > > when iterating over a sequenced collection (array / ordered collection) how > > can I determine the current objects index value (without explicitly storing > > a counter or looking to match each time) > > > > Typically I need it: > > 1. to display a serial number when printing a report. > > 2. to determine if I am on the last element. > > 3. To highlight every n-th element. > > > > regards > > Sanjay > > > > > > > > > > ----- > > --- > > Regards, Sanjay > > -- > > View this message in context: http://forum.world.st/when-iterating-over-a-collection-how-to-determine-the-current-objects-index-tp4810920.html > > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > >
