Re: [Boost-users] [fusion] more trouble with transform

On 11/12/2011 7:18 PM, Christopher Schmidt wrote:

Gennadiy Rozental writes:

...

Hi,

Now I am trying to perform transform which mutates:

[snip]

...

Both gcc and msvc complain like this:

test.cpp:29:46: error: passing ‘const B’ as ‘this’ argument of ‘C B::make_c()’ discards qualifiers.

What am I missing now?

Gennadiy

fusion::transform only accepts cref-qualified sequences. That is why the resulting transform view will be store a reference to z1 const and thus the arguments passed to make_c are const-qualified.

https://svn.boost.org/trac/boost/ticket/3446

Construct the transform view by hand and your example should work fine.

Again, as I said in the link you gave, I am willing to accept a patch if it includes docs + tests. The changes are simple enough. Just don't give me a whole change-everything-in-one-fell-swoop patch. I will not have enough time to review them all. Incremental changes such as this will be good. Regards, -- Joel de Guzman http://www.boostpro.com http://boost-spirit.com