specify a Fixnum (integer) as an index, it returns the decimal character code for the character found at the index location


line = "A horse! a horse! my kingdom for a horse!"
puts line[7] 

# At the location 7, [] found the character 33 (!).

1.	Character literal
2.	Map chars in a string
3.	Use string as array
4.	Change a string with offset
5.	taking the first letter from a string
6.	Accessing Strings
7.	If you add the chr method from the Integer class, you'll get the actual character:
8.	use an offset and length (two Fixnums) to tell [] the index location where you want to start, and then how many characters you want to retrieve
9.	Enter a range to grab a range of characters.
10.	use regular expressions
11.	Adding another argument, a Fixnum, returns that portion of the matched data, starting at 0 in this instance
12.	Concatenate string by string index
13.	Loop through a string with while

specify a Fixnum (integer) as an index, it returns the decimal character code for the character found at the index location : char in string « String « Ruby