[ruby] How do I find the index of a character in a string in Ruby?

For example, str = 'abcdefg'. How do I find the index if c in this string using Ruby?

str="abcdef"

str.index('c') #=> 2 #String matching approach
str=~/c/ #=> 2 #Regexp approach 
$~ #=> #<MatchData "c">

Hope it helps. :)

You can use this

"abcdefg".index('c')   #=> 2