Calculates the number of verses in an aliyah or Haftarah from its b (begin verse), e (end verse) and k (book), caching the result on the object's v field. If v is already set, returns it unchanged.
b
e
k
v
the passage to measure; mutated in place to set v
the number of verses in the passage
Calculates the number of verses in an aliyah or Haftarah from its
b(begin verse),e(end verse) andk(book), caching the result on the object'svfield. Ifvis already set, returns it unchanged.