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From: Georg Bauhaus <sb463ba@l1-hrz.uni-duisburg.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada Popularity: Comparison of Ada/Charles with C++ STL (and Perl)
Date: Thu, 23 Sep 2004 11:01:18 +0000 (UTC)
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Date: 2004-09-23T11:01:18+00:00
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Kevin Cline <kevin.cline@gmail.com> wrote:
:  begin -- Insert 
:    Insert (Map, To_Lower (Word), 0, I, B); 
:    declare E : Wordcount_Maps.Element_Subtype renames To_Access
: (I).all;
:    begin 
:      E := E + 1; 
:    end; 
:  end Insert;

Is the intention to first store a 0 with word, and then
to increment the value stored at word?

: is easier to understand than the corresponding C++ code:
:  ++concordance[word];

Although this will require that you know how to separate the
queries and commands in this abbreviation. If you are not used
to how ++ and [] work in the context of maps, will this still be
easy to understand?  AFAIK, [] does more than one thing behind
the scenes.  ++ is known to be difficult to understand in that it
is not clear what ++ is referring to. Here, it is not incrementing
the concordance, although the operator is placed immediately before
the identifier. IIRC, the K&R book talks about (), ++, *, -> at
length. I guess there is a reaseon.

For me this is similar to saying the APL is easy to read, which
is true if you know APL.

-- Georg