> -----Ursprungligt meddelande----- > Från: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] För > Paul Gilmartin > Skickat: den 16 april 2012 15:11 > Till: IBM-MAIN@bama.ua.edu > Ämne: Re: GO TO "cobol" > > On Sun, 15 Apr 2012 23:15:19 -0700, Edward Jaffe wrote: > > > >The problem with GOTO is that the suitability of the target branch > location is > >not enforced by the compiler according to any structured discipline. > > > "C" commits this offense. Shame on C. > > >Premature terminations (posit/quit/admit) can almost always be handled > with > >LEAVE-type statements or immediate return from a subroutine. Some > languages have > >SIGNAL, EXIT, etc. which can help provide structured premature > termination for > >larger routines without resorting to the dreaded GOTO. > > > Rexx is a nightmare here. The LEAVE statement, even with a specified > target, won't exit a (nest of) procedure(s). The SIGNAL statement > trashes the DO nesting at the target level. Shame on Rexx.
I can see that as a feature. ;) That prohibits some obfuscate like coding. (BTW, How do You imagine the behavior if the Signal DID NOT trash the DO nesting? I mean, of what use would that be? As You have the CALL stmt.) Regards, Thomas Berg ______________________________________________________ Thomas Berg Specialist AM/DQS SWEDBANK AB (publ) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
