End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
IO#write
write(*objects) → integer
io.c
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static VALUE
io_write_m(int argc, VALUE *argv, VALUE io)
{
if (argc != 1) {
return io_writev(argc, argv, io);
}
else {
VALUE str = argv[0];
return io_write(io, str, 0);
}
}
Writes each of the given objects to self, which must be opened for writing (see Access Modes); returns the total number bytes written; each of objects that is not a string is converted via method to_s:
Example
$stdout.write('Hello', ', ', 'World!', "\n") # => 14 $stdout.write('foo', :bar, 2, "\n") # => 8
Output:
Hello, World! foobar2
Related: IO#read.
Ruby version changes
-
3.0
-
IO#wait_readable,IO#wait_writable,IO#read,IO#writeand other related methods (e.g.IO#puts,IO#gets) may invoke the scheduler hook io_wait(io, events, timeout) in a non-blocking execution context. [Feature #16786]
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