Reading key pressing from a keyboard in Ruby

Question

I know about "a = gets", but I need to read characters from keyboard without pressing enter. How can I do this in ruby?

Is that what you are looking for? http://stackoverflow.com/questions/946738/detect-key-press-non-blocking-w-o-getc-gets-in-ruby — moodywoody, Apr 01 '12 at 11:12
http://stackoverflow.com/questions/174933/how-to-get-a-single-character-without-pressing-enter — joelparkerhenderson, Apr 01 '12 at 11:43

score 1 · Answer 1 · answered Jun 21 '13 at 15:46

1

You can try the STDIN, please check its document. It's a powerful tool to control your standard input .

answered Jun 21 '13 at 15:46

staticor

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score 1 · Accepted Answer · edited May 23 '17 at 10:26

1

use the green_shoes gem or simply use red shoes, here a green_shoes working sample

 ['green_shoes'].each(&method(:require))
Shoes.app do
 e = edit_line
 info = para "NO KEY is PRESSED."
 keypress do |k|
   info.replace "#{k.inspect} was PRESSED."
   print k
 end
end

Works on any OS unlike the sollution from Detect key press (non-blocking) w/o getc/gets in Ruby Put your shoes on !

edited May 23 '17 at 10:26

Community

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1

answered Apr 01 '12 at 13:25

peter

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Nifty! Thanks for sharing this - it's very different and a neat approach. – joelparkerhenderson Apr 01 '12 at 15:39
thanks, i advise to ta a good look at green shoes, it's amazing what you can do with it, could you accept my answer please ? – peter Apr 01 '12 at 18:43

Reading key pressing from a keyboard in Ruby

2 Answers2