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Newsgroups: comp.lang.ada
Date: Sun, 17 Jan 2021 08:20:29 -0800 (PST)
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Subject: Re: ANN: Simple Components v
From: reinert <reinkor@gmail.com>
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Xref: reader02.eternal-september.org comp.lang.ada:61159
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I use it as part of a system processing scripts. The terms (a, b, c,..) and
operations (op1, op2,...) may represent functions to be defined.

reinert

s=C3=B8ndag 17. januar 2021 kl. 07:54:16 UTC+1 skrev Dmitry A. Kazakov:
> On 2021-01-17 06:34, reinert wrote:=20
> >>> Convert between prefix, infix, postfix notation?=20
> >> Convert what?=20
> >> --=20
> >=20
> > Here is a reference to the topic:=20
> >=20
> > https://www.geeksforgeeks.org/convert-infix-prefix-notation:=20
> >=20
> > Simple example:=20
> >=20
> > a + b <-> +(a,b)
> And what is the problem? I mean this is trivial, or I do not understand=
=20
> your question.
> > The expressions could be more complex:=20
> >=20
> > (a op1 b op2 (c + (d op3 e))) op4 ((f op5 g) op6)=20
> >=20
> > where op1, op2 etc are operators (functions).=20
> >=20
> > This may be standard for those making compilers.=20
> > I use it to process sets (where operators are intersection, union etc)=
=20
> > and a, b, c, ... above can be references to functions returning Ordered=
_Sets.
> I do not understand this either. Set-theoretic operations form a=20
> lattice, no different from Ada's logical operations "and", "or", "not"=20
> plus "in", "not in". Same rules. Are asking about syntax or types involve=
d?
> --=20
> Regards,=20
> Dmitry A. Kazakov=20
> http://www.dmitry-kazakov.de