[Seqan-dev] match number of globalalignment


Hi all,

There is one example for pairwise global alignment http://trac.seqan.de/wiki/Tutorial/Alignments in the seqan tutorial. 
I can get the alignment output using the example code. I am wondering if there is any metafunction which can be used to get the match number of alignment. 
If not, how can i get the match number from an alignment result ?

thank you,
Beifang.