Numeric labels are okay for write-only code. They are very bad in code that has to be maintained.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List <ASSEMBLER-LIST@listserv.uga.edu> on behalf of Bernd Oppolzer <bernd.oppol...@t-online.de> Sent: Wednesday, February 14, 2018 4:39 PM To: ASSEMBLER-LIST@listserv.uga.edu Subject: Re: Call by name Am 14.02.2018 um 17:34 schrieb Seymour J Metz: > You're thinking of Pascal. In Algol 60 labels could certaainly be integers, > but didn't have to be. Instead of designing Pascal to make GOTO less > necessary, Wirth just made it more dangerous )-: > I don't understand your comment. Labels in Pascal a integer constant, followed by a colon, which have to be coded in front of a statement. Furthermore, there must be a declaration for them (e.g. label 10;). There is no danger in using them, apart from the general problem that labels have ("goto considered harmful"). In 2011, I added break, continue and return statements to my version of the Stanford Pascal compiler, and this allowed me to remove most of the labels - and gotos - which were in the compiler source code (which is in Pascal, too); because most labels were used to do exactly such things (like break, continue or return). Stanford Pascal homepage: http://secure-web.cisco.com/1RC63R3qXmHgGVXcVSKI88MTb_8Az7s_wdec2_oVVBCIzdOXTVV8Xgguxb5tVPRSSy0g9FTVlQLjbqxDrCn1_7XtWnxfPcFKW8IQ5yhIwrKPEhM3Jkdm1kniwDvVOQ8E9GBzJV7USAtx9oNf8L_id5B5AmWkikX5jzUVnHX6rlISd9xn6g8yyh6yWfN7vL71KaDNyAw0O50CGahT4BsALhVM8K6QXiBf-RnpkRYQemRSkPfM5GynweCdQN5NvyLUcBU5TfwpVYMEFtZbM3XWRZFvPFoWNtuLyaoqQLss2NiN5Ce-mXszPFjXUw5QTt3gVXeOKAo_DwF9COgc88QeT1nEf6poba2RWnBRUDBdl5naCTdbA2JsloikGrNBkmjP1hzVxTyWkFamuJBggbC0o5x1EjYRHRX6-7fKUAChQXouj2xV-lisGqYdJOFzfL1qK/http%3A%2F%2Fbernd-oppolzer.de%2Fjob9.htm > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 >