[R] position of a specific character

From: Hua Li <hualihua_at_yahoo.com>
Date: Mon, 14 Jul 2008 15:57:36 -0700 (PDT)

Hi All,

I'm wondering whether there is a quick way to know the position of a specific charcater in a long character:

for example


and I would like to know that the 1st, 2nd, 26th, 27th, 28th ... character is "(", is there a quick way to do that?



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