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comp.lang.ruby

ruby 1.8 strange behavior

Dmitry V. Sabanin

9/11/2003 5:15:00 PM

Hi,
I've started making my own C extension to ruby, and found that strange
behavior:
class MyTest
def []=(key,val)
"my_own_return_value"
end
end
test = MyTest.new
p test[1] = "big"

Both ruby1.6 and ruby1.7 puts "my_own_return_value", but ruby1.8 puts
"big". I'm interested if this is right.
I know that it's kinda stupid to do something like this and I found that just
by accident, but anyway :)

--
sdmitry -=- Dmitry V. Sabanin
MuraveyLabs.
2 Answers

ts

9/11/2003 5:19:00 PM

0

>>>>> "D" == Dmitry V Sabanin <sdmitry@lrn.ru> writes:

D> Both ruby1.6 and ruby1.7 puts "my_own_return_value", but ruby1.8 puts
D> "big". I''m interested if this is right.

The modification is intentional.


Guy Decoux

Mauricio Fernández

9/11/2003 8:35:00 PM

0

On Fri, Sep 12, 2003 at 02:14:36AM +0900, Dmitry V. Sabanin wrote:
> Hi,
> I''ve started making my own C extension to ruby, and found that strange
> behavior:
> class MyTest
> def []=(key,val)
> "my_own_return_value"
> end
> end
> test = MyTest.new
> p test[1] = "big"
>
> Both ruby1.6 and ruby1.7 puts "my_own_return_value", but ruby1.8 puts
> "big". I''m interested if this is right.
> I know that it''s kinda stupid to do something like this and I found that just
> by accident, but anyway :)

The rationale for that is making it work like an assignment:

a = b[0] = 1
# here you expect a == 1, not a = return value of []=

Same thing for
a = b.bla = 1

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