Re: [sc-users] a Bug ?

[James McCartney <asynth@xxxxxx>]

Not a bug. You are combining the nondestructive operation 'collect'  
with the destructive operation 'insert' and that is causing a mess.
a better way to do this is:

x = [[1,2],[3,4],[5,6],[6,7],[8,9.10]];

y = x.collect {|e,i| ["a"++i] ++ e };

x is not modified and y contains the result.


On Sep 7, 2005, at 2:08 AM, Amos Elmaliah wrote:

> Hi List!
>
> WHY :
>
> x = [ [ "obj", "cube" ], [ "obj", "colorRGB", 0, 1, 0 ], [ "obj",  
> "alpha"
> ], [ "obj", "gemhead", 50 ], [ "obj", "route", "priority", "alpha",  
> "size"
> ], [ "msg", "set", $1 ] ];
>
>     x.collect({|cmd, i| cmd.insert(0, "a-"++i) } );
>
>     x = [ [ obj, cube ], [ a-1, obj, colorRGB, 0, 1, 0 ], [ obj,  
> alpha ],
> [ a-3, obj, gemhead, 50 ], [ a-4, obj, route, priority, alpha, size ],
> [ a-5, msg, set, 1 ] ]
>
>
> BUT:
>
> x = [[1,2],[3,4],[5,6],[6,7],[8,9.10]]
>
>
>     x.collect({|e,i| e.insert(0, "a"++i) })
>
>     x = [ [ 1, 2 ], [ 3, 4 ], [ 5, 6 ], [ 6, 7 ], [ 8, 9.1 ] ]
>
>
> thanks !!
>
> Amos Elmaliah.
>
>
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