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Date: Sat, 16 Jan 2021 21:34:49 -0800 (PST)
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Subject: Re: ANN: Simple Components v
From: reinert <reinkor@gmail.com>
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> > Convert between prefix, infix, postfix notation?
> Convert what?
> -- 

Here is a reference to the topic:

https://www.geeksforgeeks.org/convert-infix-prefix-notation:

Simple example:

a + b <-> +(a,b)

The expressions could be more complex:

(a op1 b op2 (c + (d op3 e))) op4 ((f op5 g) op6)

where op1, op2 etc are operators (functions).

This may be standard for those making compilers.
I use it to process sets (where operators are intersection, union etc)
and a, b, c, ... above can be references to functions returning Ordered_Sets.
This is a good  exercise in using recursive procedures/functions :-) However, I would
like to see possibilities to generalize my approach (using for example generics).