Display extended-ASCII character in Ruby

Question

How to print an extended ASCII character on the console. For example, if I use the following

puts 57.chr

It will display "9" on the console. If i used

puts 219.chr

It will only display "?". It does this for all Extended-ASCII codes from 128 to 254. Is there a way to display the correct character instead of "?".

Answer 1

I am trying to use drawing symbols to create graphics in my console program.

You should now use UTF-8.

Here is an example of using characters in a Box Drawing Unicode block :

puts "╔═══════╗\n║ Hello ║\n╚═══════╝"

Conclusion:

╔═══════╗
║ Hello ║
╚═══════╝

, , , Unicode U + 2588 ( ), Ruby.

:

puts "\u2588"

puts 0x2588.chr('UTF-8')

:

puts '█'

Answer 2

, :

219.chr(Encoding::UTF_8)

Answer 3

You need to specify the encoding of the string and then convert it to UTF-8. For example, if I want to use Windows-1251 encoding:

219.chr.force_encoding('windows-1251').encode('utf-8')
# => ""

Similarly for ISO_8859_1:

219.chr.force_encoding("iso-8859-1").encode('utf-8')
# => "Û" 

Answer 4

You can use the method Integer#chr([encoding]):

219.chr(Encoding::UTF_8)   #=> "Û"

more information in the doc method .