Re: [Boost-users] [fusion] transform and transform_view

On 4/22/2011 9:06 PM, Karsten Ahnert wrote:

...

Try:

fusion::result_of::transform< vector_type const, operation>::type tv2 = fusion::transform( v , operation() );

Notice the const. As of now, Fusion many algos accept only const sequences. There's a rationale why: Fusion algos are basically non-mutating and returns views. Anyway, I intend to relax this restriction and accept non-const sequences soon.

Regards,

Thank you, it works. Is there a simple way to do a non-lazy transform?

Just assign it back to the vector: typedef fusion::vector< int , float> vector_type; vector_type v( 1 , 3.4 ); v = fusion::transform( v , operation() ); Regards, -- Joel de Guzman http://www.boostpro.com http://boost-spirit.com