[ruby/io-wait] [DOC] Fix the return values [ci skip]
Even since 0.1.0, other than +true+ or +false+ may be returned.
https://github.com/ruby/io-wait/commit/d0721e300a
Added by nobu (Nobuyoshi Nakada) over 3 years ago
[ruby/io-wait] [DOC] Fix the return values [ci skip]
Even since 0.1.0, other than +true+ or +false+ may be returned.
https://github.com/ruby/io-wait/commit/d0721e300a