Re: Operator question.

[Jerry Petrey <"jdpetrey<NOSPAM>"@west.raytheon.com>]

Wannabe h4x0r wrote:
> 
> Alright, forgive me if this question seems dumb. I cant beleive I havent
> asked it before now.(or maybe I have and I just forgot.)
> 
> What does the operator '=>' mean? I've been looking through my book
> "Programming in Ada95" but I cant seem to find it anywhere.
> 
> I see it everywhere in Ada code. Maybe I'm just a slow learner.
> 
> Any help would be appreciated.
> 
> Thanks.
> 
> Chris


Actually Barnes first mentions the => (commonly called 'arrow') in his
section on array aggregates - he says it is akin to the 'pointing hand'
sign found in old railway timetables and used for indication directions.

Normally => is thought of as meaning 'gets' or 'becomes' as in the
subprogram call Foo (Value => X).  The formal parameter Value 'gets'
the actual parameter X and so forth.  In the case structure, it takes
on the 'pointing hand' analogy even better, i.e. 'for this case do this'.

Jerry
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-- Jerry Petrey                                                
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