Article View: comp.lang.misc
Article #682Re: :=
From: Bard Bloom
Date: Wed, 04 Oct 1989 19:00
Date: Wed, 04 Oct 1989 19:00
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In article <6054@tekgvs.LABS.TEK.COM> toma@tekgvs.LABS.TEK.COM (Tom Almy) writes: > >I personally would like to see the left arrow back. It makes more sense >than colon equal (gag, why couldn't they at least have used <- ?) and both >of these are easier to explain than the use of just the equals sign for >assignment. They couldn't have used `<-' because of the [near-]ambiguity of parsing things like `x<-4'. It might not actually be ambiguous in Algol 60; I don't think that you could write things like `x <- y <- 4' as you can in Algol 68, and the two or other things I tried (eg, with conditionals) had only one type-correct and syntactically correct parsing.) They probably thought about using <= too, but that looks too much like a comparison. I actually prefer the C style, using "=" for ":=" and "==" for "=", but it's not a good choice. -- Bard
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!bard From: bard@brigid.cs.cornell.edu (Bard Bloom) Newsgroups: comp.lang.misc Subject: Re: := Message-ID: <32861@cornell.UUCP> Date: 4 Oct 89 19:00:06 GMT References: <1989Oct3.182931.518@jarvis.csri.toronto.edu> <6054@tekgvs.LABS.TEK.COM> Sender: nobody@cornell.UUCP Reply-To: bard@cs.cornell.edu (Bard Bloom) Organization: Cornell Univ. CS Dept, Ithaca NY Lines: 20