[plt-scheme] set-car! set-cdr! not working with mz-4.0.

[Filipe Cabecinhas]

Hi,

On 15 Jun, 2008, at 23:01, narutocanada at gmail.com wrote:

> set-car! set-cdr! not working with mz-4.0.


You should use languages R5RS or R6RS (module + #!r6rs at the  
beginning of the file) or use mcons/mcar/mcdr/set-mcar!/...

MzScheme's pairs are, by default, immutable, in 4.0, mcons creates  
mutable pairs.

   - Filipe Cabecinhas