RSpec
Ruby on Rails
Ruby
method
ord
v3.1.0 -
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Class: String
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= private
= protected
ord()
public
Returns the codepoint of the first character of the string, assuming a single-byte character encoding:
"a".ord # => 97 "Ã ".ord # => 224, in ISO-8859-1
This method is defined in Ruby 1.8 for Ruby 1.9 forward compatibility on these character encodings.
ActiveSupport::Multibyte::Chars#ord is forward compatible with Ruby 1.9 on UTF8 strings:
"a".mb_chars.ord # => 97 "Ã ".mb_chars.ord # => 224, in UTF8
Note that the 224 is different in both examples. In ISO-8859-1 “Ã ” is represented as a single byte, 224. In UTF8 it is represented with two bytes, namely 195 and 160, but its Unicode codepoint is 224. If we call ord on the UTF8 string “Ã ” the return value will be 195. That is not an error, because UTF8 is unsupported, the call itself would be bogus.
