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NNTP-Posting-Date: Wed, 16 Oct 2024 14:36:34 +0000
From: Joe Gwinn <joegwinn@comcast.net>
Newsgroups: sci.electronics.design
Subject: Re: Duplicate identifiers in a single namespace
Date: Wed, 16 Oct 2024 10:36:33 -0400
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On Wed, 16 Oct 2024 13:00:48 +0200, albert@spenarnc.xs4all.nl wrote:

>In article <vdbgch$1ob5k$1@dont-email.me>,
>Don Y  <blockedofcourse@foo.invalid> wrote:
>>How does (e.g., Windows) tolerate/differentiate between
>>multiple *identical* identifiers in a given namespace/context?
>>
>>And, what *value* to supporting this capability?
>>
>This is not a Windows question. It is a language question.
>C
>C is weird. Some identifiers can be declared multiply
>as forward. You can have the same name sometimes for
>things that are of different type. Not to speak of macro's

Look into C/C++ Namespaces.  That explains things reasonably well.


>Pascal
>If you declare multiple identifiers in the same namespace
>you are hit on the head. You can have nested namespaces
>and there is no conflict, the inner namespace counts.

Pascal is compiled in a single pass through the source code, so
everything must be defied before it is first used.  Unlike C/C++,
which has a multipass compiler and linker.  This was done because
Pascal was intended for teaching programming, and the load in the
university's computers was from compiling buggy student homework code
time and time again, while C was intended to replace assembly in the
Unix operating system.


>Forth
>You can use the same name for multiple objects.
>The name last defined counts. You get at most a warning.

Forth is interpreted, and is a pure pushdown language, like a HP
calculator using RPN.

Joe Gwinn


>Groetjes Albert