I have the string
a.b.c.d
I want to count the occurrences of '.' in an idiomatic way, preferably a one-liner.
(Previously I had expressed this constraint as "without a loop", in case you're wondering why everyone's trying to answer without using a loop).
Best Answer
How about this. It doesn't use regexp underneath so should be faster than some of the other solutions and won't use a loop.