ASCII value of character in Ruby

Question

How do I obtain the ASCII value of a character in Ruby 1.9?

I searched the Inte.net far and wide, but without success. I tried?x and "x"[0], but all they return is "x".

Answer 1

The String#ord method will do the trick:

ruby-1.9.2-p136 > 'x'.ord
 => 120 
ruby-1.9.2-p136 > '0'.ord
 => 48 
ruby-1.9.2-p136 > ' '.ord
 => 32 

Answer 2

You can also use

ruby-2.0.0p353 > "x".sum
=> 120

ruby-2.0.0p353 > "a string".sum
=> 792 

The 'sum' method will find the sum of all character codes, but if you put only one character it will give you the code of that one only.

Answer 3

x.ord

http://www.ruby-doc.org/core/classes/String.html#M001177

Answer 4

Your answer

Ruby: character to ascii from a string

Answer 5

可能这个链接将帮助您使用`？`（问号）在Ruby中获取ASCII字符代码失败

Answer 6

I was also stuck with this, ord only works from string to number and not vice versa. The solution is:

def getChar(a):
 return a.chr
end