[ruby-talk:12685] Re: FEATURE REQUEST: 'my' local variables

Hi,

In message "[ruby-talk:12683] Re: FEATURE REQUEST: 'my' local variables"
    on 01/03/15, YANAGAWA Kazuhisa <[e-mail]> writes:

|Then the snippet below show what value?
|
|    foo = 0
|    bar = 0
|    1.times do
|      foo = 1
|      foo := 2
|      bar = foo+1
|    end
|    
|    puts foo, bar 
|
|With the `policy' rules the current implementation probably foo in the
|block is judged as block local variable at compile time, thus puts
|prints 0 and 3.

I think it would give 1 and 3.

>    foo = 0
>    bar = 0
>    1.times do
>      foo = 1          # local variable foo
>      foo := 2         # block local variable foo, WARNING!!
>      bar = foo+1      # block local foo + 1
>    end
>    puts foo, bar      # local variable foo, bar

|Introducing new variables at a beginning of the block is better for
|me.  Otherwise I should be more careful of where a variable belonging
|to, since variables can suddenly become block local in a sequence of
|code.

I can understand you.

							matz.