Get front of the iterator, returns Bam1, Bcf1, or Kstring Backing bam1_t, bcf1_t, kstring_t is re-used If you keep the result around it should be duplicated
See Implementation
Get front of the iterator, returns Bam1, Bcf1, or Kstring Backing bam1_t, bcf1_t, kstring_t is re-used If you keep the result around it should be duplicated