Who said anything about deleting any numbers? The code fragment I posted did not delete any numbers; it merely made a new array with everything that was not #+. In the original post there were no strings. (By the way, you wrote "trailing" where you meant "leading".)
On Mon, 3 Dec 2018 at 08:40, Roelof Wobben <r.wob...@home.nl> wrote: > and I do not want to delete all numbers that begin with a + but remove the > trailing + from a string which look like this +15 > > Op 2-12-2018 om 20:36 schreef Richard O'Keefe: > > Thinking about this functionally, you want > to sum > the array elements that are not + . > So, > (array select: [:each | each ~~ #+]) sum > The *best* approach is not to put the + symbols > into the array in the first place. > > On Sun, 2 Dec 2018 at 23:46, Roelof Wobben <r.wob...@home.nl> wrote: > >> Op 2-12-2018 om 11:15 schreef Hilaire: >> > #(+1 -8) inject: 0 into: [:sum :each | each ~= #+ ifTrue: [sum + each] >> > ifFalse: [sum]] . >> >> Thanks, >> >> Now to stretch my mind I will try to make one with double-dispatch. >> >> Roelof >> >> >> >
