Ruby Chinese Encoding

In the previous chapters, we have learned how to output "Hello, World!" in Ruby, which is fine in English, but if you output Chinese characters "你好，世界", you may encounter Chinese encoding issues.

If the encoding is not specified in the Ruby file, an error will occur during execution:

#!/usr/bin/ruby -w
puts "Hello, World!";

The above program execution output result is:

invalid multibyte char (US-(ASCII) 

The above error information shows that Ruby uses ASCII encoding to read source code, and Chinese characters will appear garbled. The solution is to add # -*- coding: UTF-8 -*-(EMAC notation) or #coding=utf-8 is enough.

Online Examples

#!/usr/bin/ruby -w
# -*- coding: UTF-8 -*-
puts "Hello, World!";

The output result is:

Hello, World!

So if everyone is learning, in the source code file, if it contains Chinese encoding, then you need to pay attention to two points:

• 1The editor must be added at the first line # -*- coding: UTF-8 -*-, tell the interpreter to use utf-8to parse the source code.
• 2The editor must be set to save files in utf encoding.-8.
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