TUPLE: line x1 y1 x2 y2 ; C: line GENERIC: pointlist> ( object -- seq ) GENERIC# >pointlist 1 ( obj seq -- obj ) M: line pointlist> [ [ x1>> ] [ y1>> ] bi 2array ] keep [ x2>> ] [ y2>> ] bi 2array 2array ; M: line >pointlist ! OBJ ! { { x1 y1 } { x2 y2 } } { { [ >>x1 ] [ >>y1 ] } { [ >>x2 ] [ >>y2 ] } } [ [ call ] 2each ] 2each ; inline ! resource:work/svgcreator/svgcreator.factor: 46 ! ! Asset: M\ line >pointlist ! ! Cannot apply “call” to a run-time computed value ! macro call