I’m starting to teach my 7-year-old programming in Ruby, but unlike
Scheme or Python or Logo, there doesn’t seem to be a graphical
interactive environment, such as DrScheme or Livewires.
It should be easy to create one, and I’ve made a start using Tk and irb.
I’ve come across what looks like an ommission in irb:
The IRB::Irb constructor takes optional “input_method” and
“output_method” parameters. I’ve created an InputMethod subclass that
reads commands from a GUI window, which works, but the output method is
ignored - it’s passed to the IRB::Context object, but never used.
It looks like something like the following is missing:
def output( str )
@output_method.print( str )
def printf( *args )
@context.output( sprintf( *args ) )
By doing that, I can then direct irb’s output to my GUI object.
How should this get fixed in irb?