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[REBOL] Why should I copy ?

From: gchillemi::aliceposta::it at: 24-Sep-2009 17:46

I have the following routine: rebol [] page: read/lines to-url "http://www.repubblica.it" foreach line page [ page-to-read: copy "http://" url-record: "www.plutus.com" page-to-read: append page-to-read reduce [url-record] print [page-to-read] ] the output is http://www.plutus.com Why if I remove copy from "page-to-read" rebol [] page: read/lines to-url "http://www.repubblica.it" foreach line page [ page-to-read: "http://" url-record: "www.plutus.com" page-to-read: append page-to-read reduce [url-record] print [page-to-read] ] The output is: http://www.plutus.com http://www.plutus.comwww.plutus.com http://www.plutus.comwww.plutus.comwww.plutus.com http://www.plutus.comwww.plutus.comwww.plutus.comwww.plutus.com http://www.plutus.comwww.plutus.comwww.plutus.comwww.plutus.comwww.plutus.co m http://www.plutus.comwww.plutus.comwww.plutus.comwww.plutus.comwww.plutus.co mwww.plutus.com http://www.plutus.comwww.plutus.comwww.plutus.comwww.plutus.comwww.plutus.co mwww.plutus.comw ww.plutus.com We are not inside an object and the string should be initialized by the command: page-to-read: "http://" Giuseppe Chillemi