Enter a range to grab a range of characters.

# Two dots (..) means include the last character:

cite = "this is a test"

cite[0..4]

1.	Character literal
2.	Map chars in a string
3.	specify a Fixnum (integer) as an index, it returns the decimal character code for the character found at the index location
4.	Use string as array
5.	Change a string with offset
6.	taking the first letter from a string
7.	Accessing Strings
8.	If you add the chr method from the Integer class, you'll get the actual character:
9.	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
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

Enter a range to grab a range of characters. : char in string « String « Ruby