1. Re: we need official libs : Swap
Roderick Jackson wrote:
> I think I've decided. This construct is a Bad Thing.
> Ambiguity and exceptions abound concerning subscripts,
> slices, off-sized sequences, and multiple instances of
> a variable.
I disagree. Implementation removes the ambiguity - it just may not work the
way you expected.
This mechanism is basically a way of getting around the fact that you can't
pass by reference is Euphoria. This constraint often leads to unclear code,
such as (actual example):
pt1 = mapToParent( self, x1, y1 )
pt2 = mapToParent( self, x2, y2 )
draw_line( pt1[X], pt1[Y], pt2[X], pt2[Y] )
Compare that with:
{ x1, y1 } = mapToParent( self, x1, y1 )
{ x2, y2 } = mapToParent( self, x2, y2 )
drawLine( x1, y1, x2, y2 )
I consider the second version to be much more readable.
-- David Cuny
