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.wobben@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.wobben@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