Hi Volker, you wrote: >My problem is: i dont know the arg of 'do. its a parameter. >type? destroys the result. i can not store it before, because >this can cause an error. i can not [try [a: do b] because the error >can be caused by code in 'b . maybe something like >[try [ a: try [b]], but this gets complicated. Not very elegant, but this works: >> unset 'a >> result: [] == [] >> insert result do [print "hi"] hi == [] >> if not unset? first result [a: first result] clear head result == [] >> value? 'a == false >> insert result do [1 + 1] == [] >> if not unset? first result [a: first result] clear head result == [] >> value? 'a == true >> a == 2 Hope this helps, ;- Elan >> [: - )]
