[#9869] a block argument within a block which argument has the same name leaks — <noreply@...>

Bugs item #7680, was opened at 2007-01-08 22:53

34 messages 2007/01/08
[#9871] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/08

Hi,

[#9872] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Evan Webb <evan@...> 2007/01/08

On Jan 8, 2007, at 2:30 PM, Yukihiro Matsumoto wrote:

[#9873] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/08

Hi,

[#9876] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — dblack@... 2007/01/09

Hi --

[#9878] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/09

Hi,

[#9879] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — dblack@... 2007/01/09

Hi --

[#9880] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/09

Hi,

[#9882] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Evan Phoenix <evan@...> 2007/01/09

[#9885] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/09

Hi,

[#9887] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Evan Phoenix <evan@...> 2007/01/09

[#9888] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Charles Oliver Nutter <charles.nutter@...> 2007/01/09

Evan Phoenix wrote:

[#9892] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/09

Hi,

[#9899] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Charles Oliver Nutter <charles.nutter@...> 2007/01/10

Yukihiro Matsumoto wrote:

[#9904] Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks — Yukihiro Matsumoto <matz@...> 2007/01/10

Hi,

[#9960] Scoping and locating definitions — Jos Backus <jos@...>

Consider the following:

17 messages 2007/01/18
[#9964] Re: Scoping and locating definitions — Pit Capitain <pit@...> 2007/01/19

Jos Backus schrieb:

[#9966] Re: Scoping and locating definitions — Jos Backus <jos@...> 2007/01/19

On Fri, Jan 19, 2007 at 06:40:03PM +0900, Pit Capitain wrote:

[#9972] Re: Scoping and locating definitions — Jos Backus <jos@...> 2007/01/19

On Sat, Jan 20, 2007 at 02:18:19AM +0900, Jos Backus wrote:

[#9996] new method dispatch rule (matz' proposal) — SASADA Koichi <ko1@...>

Hi,

50 messages 2007/01/23
[#10002] Re: new method dispatch rule (matz' proposal) — Daniel DeLorme <dan-ml@...42.com> 2007/01/23

SASADA Koichi wrote:

[#10003] Re: new method dispatch rule (matz' proposal) — Yukihiro Matsumoto <matz@...> 2007/01/23

Hi,

[#10004] Re: new method dispatch rule (matz' proposal) — James Edward Gray II <james@...> 2007/01/23

On Jan 23, 2007, at 7:41 AM, Yukihiro Matsumoto wrote:

[#10017] Re: new method dispatch rule (matz' proposal) — Daniel DeLorme <dan-ml@...42.com> 2007/01/24

Yukihiro Matsumoto wrote:

[#10018] Re: new method dispatch rule (matz' proposal) — Yukihiro Matsumoto <matz@...> 2007/01/24

Hi,

[#10024] Re: new method dispatch rule (matz' proposal) — Daniel DeLorme <dan-ml@...42.com> 2007/01/24

Yukihiro Matsumoto wrote:

[#10027] Re: new method dispatch rule (matz' proposal) — Yukihiro Matsumoto <matz@...> 2007/01/24

Hi,

[#10048] Re: new method dispatch rule (matz' proposal) — Evan Phoenix <evan@...> 2007/01/25

The more this discussion goes on, the more I worry that Joe Q Public

[#10019] stable branch policy & schedule for 1.8.6 — "Akinori MUSHA" <knu@...>

Core developers,

29 messages 2007/01/24
[#10021] Re: stable branch policy & schedule for 1.8.6 — Charles Oliver Nutter <charles.nutter@...> 2007/01/24

Akinori MUSHA wrote:

[#10032] Re: stable branch policy & schedule for 1.8.6 — Joel VanderWerf <vjoel@...> 2007/01/24

Charles Oliver Nutter wrote:

[#10085] Collaborative Ruby Language Specification — "John Lam (CLR)" <jflam@...>

Hi Everyone,

36 messages 2007/01/28
[#10108] Re: Collaborative Ruby Language Specification — Charles Oliver Nutter <charles.nutter@...> 2007/01/29

M. Edward (Ed) Borasky wrote:

[#10112] Re: Collaborative Ruby Language Specification — "Eustaquio Rangel de Oliveira Jr." <eustaquiorangel@...> 2007/01/30

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[#10114] add usage of uri.userinfo to open-uri.rb — <noreply@...>

Patches item #8309, was opened at 2007-01-30 15:25

16 messages 2007/01/30
[#10131] Re: [ ruby-Patches-8309 ] add usage of uri.userinfo to open-uri.rb — Yukihiro Matsumoto <matz@...> 2007/01/31

[#10132] Re: [ ruby-Patches-8309 ] add usage of uri.userinfo to open-uri.rb — Paulo Kh <paulo.koch@...> 2007/01/31

On 2007/01/31, at 06:07, Yukihiro Matsumoto wrote:

[#10137] Re: [ ruby-Patches-8309 ] add usage of uri.userinfo to open-uri.rb — Yukihiro Matsumoto <matz@...> 2007/01/31

Hi,

[#10139] Re: [ ruby-Patches-8309 ] add usage of uri.userinfo to open-uri.rb — Sam Roberts <sroberts@...> 2007/01/31

On Thu, Feb 01, 2007 at 01:19:34AM +0900, Yukihiro Matsumoto wrote:

[#10143] Re: [ ruby-Patches-8309 ] add usage of uri.userinfo to open-uri.rb — Yukihiro Matsumoto <matz@...> 2007/02/01

Hi,

Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks

From: Yukihiro Matsumoto <matz@...>
Date: 2007-01-13 01:57:37 UTC
List: ruby-core #9941
Hi,

In message "Re: [ ruby-Bugs-7680 ] a block argument within a block which argument has the same name leaks"
    on Sat, 13 Jan 2007 10:44:49 +0900, Charles Oliver Nutter <charles.nutter@sun.com> writes:

|Just for the record, most folks I've polled expect variables to work the 
|other way, where variables referenced only inner scopes aren't visible 
|to outer scopes. But I mostly polled the folks I deal with every 
|day...programmers with many years of experience in lexically-scoped 
|languages.

People would not have any problem with nested scopes for languages
with some kind of explicit variable declarations.  But Ruby's variable
declaration (via mere assignment) does not appear like declaration (on
purpose of course), so that it is difficult to see the scope of a
variable at a glance.

|There's also no performance-related reason to flatten scope; JRuby's 
|interpreter and compiler do not have any additional overhead for 
|variables in different scopes.

Neither YARV, if I recall correctly.

|I believe there are enough down sides to having a flat scope that the 
|few benefits would be greatly outweighed.

I am not going to remove block local variables.  Removing them would
ruin programming with the closure etc.

							matz.

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