Is this a feature or a bug?

ruby-talk
1

sorry if it’s been discussed as i don’t know what the search keyword
for this scenario. it actually came up from mistype (notice the
comma).

m:~ arie$ irb

h = {}
=> {}
h[:a] = 1,
?> h[:b] = 2
=> [1, 2]
h
=> {:a=>[1, 2], :b=>2}

···

–
r9 = { name: Rie!, ym: riyari3, skype: rubyninja,
blog: http://tinyurl.com/2bjgvn,
ruby: Tentang Ruby }

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2

This is expected behavior. You've assigned a two-element list to h[:a]

  - the number 1
  - an assignment expression yielding the number 2

Since assignment expressions return their rval, everything's happy and legal.

This one-line version behaves identically to what you've typed:

h[:a] = [1, h[:b] = 2]

~ j.

···

On Mon, Mar 10, 2008 at 10:59 PM, Rie! <ariekusumaatmaja2@gmail.com> wrote:

sorry if it's been discussed as i don't know what the search keyword
for this scenario. it actually came up from _mistype_ (notice the
comma).

m:~ arie$ irb
>> h = {}
=> {}
>> h[:a] = 1,
?> h[:b] = 2
=> [1, 2]
>> h
=> {:a=>[1, 2], :b=>2}

3

Feature, I think. Otherwise, you wouldn't be able to do things like...

a, b = b, a

The comma, it seems, assumes precedence from the right side.

Todd

···

On Tue, Mar 11, 2008 at 12:59 AM, Rie! <ariekusumaatmaja2@gmail.com> wrote:

sorry if it's been discussed as i don't know what the search keyword
for this scenario. it actually came up from _mistype_ (notice the
comma).

m:~ arie$ irb
>> h = {}
=> {}
>> h[:a] = 1,
?> h[:b] = 2
=> [1, 2]
>> h
=> {:a=>[1, 2], :b=>2}

4

menarik, hmm banyak hal2 begini yg gw jg gak tau.

oot gmail keren jg, postingan ari yg cross posting replynya dari
ruby-talk ama id-ruby bisa jadi satu thread gini :slight_smile:

···

On Tue, Mar 11, 2008 at 12:59 PM, Rie! <ariekusumaatmaja2@gmail.com> wrote:

sorry if it's been discussed as i don't know what the search keyword
for this scenario. it actually came up from _mistype_ (notice the
comma).

m:~ arie$ irb
>> h = {}
=> {}
>> h[:a] = 1,
?> h[:b] = 2
=> [1, 2]
>> h
=> {:a=>[1, 2], :b=>2}

--
r9 = { name: Rie!, ym: riyari3, skype: rubyninja,
blog: http://tinyurl.com/2bjgvn,
ruby: Tentang Ruby }

5

"zranevx, uzz onalnx uny2 ortvav lt tj wt tnx gnh.

bbg tznvy xrera wt, cbfgvatna nev lt pebff cbfgvat ercylaln qnev
ehol-gnyx nzn vq-ehol ovfn wnqv fngh guernq tvav :-)"

Our normal methods are useless here!

Arlen

···

On Tue, Mar 11, 2008 at 8:15 PM, S2 <non.sto.gioando@nien.te> wrote:

rofiq wrote:
> menarik, hmm banyak hal2 begini yg gw jg gak tau.
>
> oot gmail keren jg, postingan ari yg cross posting replynya dari
> ruby-talk ama id-ruby bisa jadi satu thread gini :slight_smile:

this looks like rot13 :slight_smile: