Bonjour, >From liveCode Dictionnary: "The value of a local variable is retained only while the handler is running. When the handler exits, the value of the local variable is lost.
The value of a script local variable is retained between handlers," For more information have a look at "local" in the dictionnary Best regards André Le 22 févr. 2014 à 17:04, Earthednet-wp a écrit : > Mats' posting on encryption difficulties got me thinking about local > variables. Are they supposed to persist after the script is done executing, > so that the next time a handler within that script is called, they can be > expected to hold previously set values? I notice that they don't. Or would > this be a task for custom properties? > Bill > > William Prothero > http://es.earthednet.org > >> On Feb 22, 2014, at 2:54 AM, Peter W A Wood <peterwaw...@gmail.com> wrote: >> >> Many thanks to Roger Eller, Jan Schenkel, Bill Vlahos and Paul Hibbert (off >> list) for helping me identify and workaround the issues I encountered. >> >> Paul pointed out three things: I didn't the use "the text of Field ..."; how >> to overcome not being able to copy text from a field in an OS X standalone; >> and the final problem that was related to script local variables. >> >> Using "the text of Field ..." instead of "Field ..." helped to more >> accurately copy and paste data. (I ended up displaying the encrypted data in >> Hex anyway.) >> >> I had found that I couldn't copy from a Field in an OS X standalone. Paul >> provide a script with group handlers to get around the problem. I have >> submitted a bug report which has been accepted - >> http://quality.runrev.com/show_bug.cgi?id=11830 >> >> At this stage, I was still getting inconsistent results when encrypting data >> in the IDE or a standalone. Then Paul noticed how I was initialising the >> encryption parameters, namely the script local variables tPassword, tSalt, >> tIV: >> >> openStack >> put "" into Field "Encrypted" >> put "12345678123456781234567812345678" into tPassword >> put "12345678123456781234567812345678" into tSalt >> put "12345678123456781234567812345678" into tIV >> end openStack >> >> on encryptMSG >> ... >> end encryptMSG >> >> on decryptMSG >> ... >> end decryptMSG >> >> He changed this to re-setting the three script local fields each time they >> were used: >> >> on openStack >> put "" into Field "Encrypted" >> end openStack >> >> command setPassCodes >> put "12345678123456781234567812345678" into tPassword >> put "12345678123456781234567812345678" into tSalt >> put "12345678123456781234567812345678" into tIV >> end setPassCodes >> >> on encryptMSG >> setPassCodes >> ... >> end encryptMSG >> >> on decryptMSG >> setPassCodes >> ... >> end decryptMSG >> >> After making this change, I now get identical results when encrypting data >> with the stack in the IDE or as a standalone. >> >> I have also entered a bug report for this - >> http://quality.runrev.com/show_bug.cgi?id=11832 - I feel there is a bug but >> not in the encrypt/decrypt functions, it's in the handling of script local >> variables. >> >> Once again, thanks for all the help. >> >> Kind regards >> Peter >> http://LiveCode1001.blogspot.com >> >> >> >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
