ruby - How to run IRB.start in context of current class -

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i've been going through pragprog continuous testing ruby, talk invoking irb in context of current class inspect code manually.

however, quote if invoke irb.start in class, self predefined, , refers object in when start called isn't true in case.

even simple example like

a = "hello" require 'irb' argv.clear # otherwise script parameters passed irb irb.start

when try access a variable, obvious 

nameerror: undefined local variable or method `a' main:object

it works when change a global variable

$a = "hello" require 'irb' argv.clear # otherwise script parameters passed irb irb.start

then can access it

irb(main):001:0> $a => 1

is there way around access local , instance variables in current class?

i'd suggest trying in ripl, irb alternative. above example works:

a = 'hello' require 'ripl' ripl.start :binding => binding

note local variables work because passing current binding :binding option.

you possibly same in irb, since it's poorly documented , untested, chances of doing cleanly slim none.


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