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From: newsuser@LTH.Se (LTH network news server)
Newsgroups: comp.lang.eiffel
Subject: Re: Eiffel suggestion
Message-ID: <1988Dec28.142851.12310@LTH.Se>
Date: 28 Dec 88 13:28:51 GMT
References: <6385@bunny.UUCP>
Reply-To: gorel@DNA.LTH.Se (G|rel Hedin)
Organization: Computer Science, Lund Institute of Technology, Sweden
Lines: 25

>One of the things that drove me nuts about Simula 67 was the absence
>of a concatenation operator.
>...
>Unfortunately, unless I missed something, Eiffel doesn't even have a
>CONCAT feature for STRING.  It does have prepend and append, but they
>change the string they are applied to.

The current standard of Simula DOES have a text concatenation operation. This
operator always creates a new text object and does not change any of the
operands. Both constants and variables can be handled by the operator.
Example:
   begin
      text x = "Foo";   ! --- Declaration of text constant ---;
      sysout.outtext(x & "f" & "a" & "h!");
   end;
This program yields "Foofah!" on the standard output.

The current standard of Simula is published as a Swedish national standard
document: SS 636114 (ISBN 91-7162-234-9). It is available via all other national
standardization bodies. (And via Simula vendors.)
---
Gorel Hedin
Dept. of Computer Science.
Lund Institute of Technology, Sweden
gorel@dna.lth.se