Turn off echo in pry or irb

When you do something in pry or irb that returns a looong result, sometimes you don’t want the result in your terminal. So to turn it off you can do this.

# In irb
irb_context.echo = false

# In pry
_pry_config.print = proc {}

# If you want to restore echo in pry, save the print proc before overwriting it.
pry_print = _pry_config.print
_pry_config.print = proc {}