Hi Nicolas,
I second your opinion. I think CMake is a bit ambiguous in this sense.
List indices are zero-based, which clearly shows a C++ implementation
background. On the other hand, range intervals are closed both at the
beginning and the end, which is not like C++, nor like, e.g., Python,
but more like one-based languages like Fortran and Pascal.
In cases like this I revert to something like this:
LIST(LENGTH mylist count)
WHILE(index LESS count)
LIST(GET ${mylist} ${index} item)
MATH(EXPR index "${index}+1")
WHILE(index LESS count)
Cumbersome, but it works.
Best regards,
Marcel Loose.
-----Original Message-----
From: Nicolas Desprès <[email protected]>
To: Hendrik Sattler <[email protected]>
Cc: [email protected]
Subject: Re: [CMake] doing simple math in cmake or useless
foreach( RANGE )
Date: Tue, 19 May 2009 23:38:05 -0300
On Tue, May 19, 2009 at 6:29 PM, Hendrik Sattler
<[email protected]> wrote:
>
> If that's not present, I do not understand how
> LIST( LENGTH MYLIST COUNT )
> FOREACH ( index RANGE ${COUNT} )
> list ( GET MYLIST ${index} entry )
> ....
>
> will address non-present indexes in the list. I would the above statement
> cover the range from 0 to COUNT-1 but it also cover COUNT itself like said in
> the documentation. Does that actually make sense as the variable in the
> documentation is called "total" but the loop count is "total+1"?
>
I also experienced this problem and I don't like this behavior. I'm
more use to the traditional
for (i = 0; i < n; ++i)
instead of <=
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