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Newsgroups: comp.lang.ada
Date: Sat, 16 Jan 2021 21:37:21 -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:61156
List-Id: <comp.lang.ada>

Forgot to say that prefix notation seems to make things simpler (that is a =
main point).

reinert


s=C3=B8ndag 17. januar 2021 kl. 06:34:51 UTC+1 skrev reinert:
> > > Convert between prefix, infix, postfix notation?=20
> > Convert what?=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)=20
>=20
> 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_S=
ets.=20
> This is a good exercise in using recursive procedures/functions :-) Howev=
er, I would=20
> like to see possibilities to generalize my approach (using for example ge=
nerics).