[#24183] "yield called out of block" — Mark Slagell <ms@...>

Having just talked with a nuby in email, I believe this error message

27 messages 2001/11/02
[#24243] Re: "yield called out of block" — matz@... (Yukihiro Matsumoto) 2001/11/03

Hi,

[#24223] Too much eval evil? (tell me why I shouldn't do this) — gandy@... (Thomas Gandy)

I've been doodling with Ruby (experimenting with it in order to figure

13 messages 2001/11/02

[#24335] Joys of eval — Albert Wagner <alwagner@...>

A few weeks ago I posted a request for help with regexp, split, scan, et.

30 messages 2001/11/04
[#24337] Re: Joys of eval — Sean Middleditch <elanthis@...> 2001/11/04

On Sun, 2001-11-04 at 13:29, Albert Wagner wrote:

[#24338] Re: Joys of eval — Albert Wagner <alwagner@...> 2001/11/04

On Sunday 04 November 2001 12:43 pm, you wrote:

[#24339] Re: Joys of eval — Sean Middleditch <elanthis@...> 2001/11/04

On Sun, 2001-11-04 at 14:01, Albert Wagner wrote:

[#24340] Re: Joys of eval — Todd Gillespie <toddg@...> 2001/11/04

On Mon, 5 Nov 2001, Sean Middleditch wrote:

[#24351] Re: Joys of eval — Sean Middleditch <elanthis@...> 2001/11/04

On Sun, 2001-11-04 at 14:31, Todd Gillespie wrote:

[#24466] Why is ruby slow (compared to perl) — "Aqil Azmi" <aazmi@...>

Hello,

29 messages 2001/11/06
[#24688] Re: Why is ruby slow (compared to perl) — Sean Russell <ser@...> 2001/11/08

Niko Schwarz wrote:

[#24694] Re: Why is ruby slow (compared to perl) — Robert Feldt <feldt@...> 2001/11/08

On Fri, 9 Nov 2001, Sean Russell wrote:

[#24511] kill rdtool? — Stefan Nobis <stefan@...>

Hi.

51 messages 2001/11/07
[#24530] RE: kill rdtool? — "Mark Hahn" <mchahn@...> 2001/11/07

[#24534] Re: kill rdtool? — Pierre-Charles David <Pierre-Charles.David@...> 2001/11/07

Mark Hahn wrote:

[#24535] Re: kill rdtool? — "Mark Hahn" <mchahn@...> 2001/11/07

[#24536] Re: kill rdtool? — Eric Lee Green <eric@...> 2001/11/07

On Wednesday 07 November 2001 09:34 am, Mark Hahn wrote:

[#24538] Re: kill rdtool? — "Mark Hahn" <mchahn@...> 2001/11/07

[#24540] Re: kill rdtool? — Eric Lee Green <eric@...> 2001/11/07

On Wednesday 07 November 2001 10:04 am, Mark Hahn wrote:

[#24541] Re: kill rdtool? — "Mark Hahn" <mchahn@...> 2001/11/07

[#24542] Re: kill rdtool? — Eric Lee Green <eric@...> 2001/11/07

On Wednesday 07 November 2001 10:14 am, Mark Hahn wrote:

[#24666] I've ported the python nntplib class to Ruby. I will be adding comments to it soon. Here it is for public commentary and criticism — jheard <jheard@...>

require 'socket'

9 messages 2001/11/08

[#24698] ruby and webservices — Markus Jais <info@...>

hello

46 messages 2001/11/08
[#24715] Re: ruby and webservices — ptkwt@...1.aracnet.com (Phil Tomson) 2001/11/09

In article <9setsu$1378d4$1@ID-75083.news.dfncis.de>,

[#24730] Re: ruby and webservices — "Rich Kilmer" <rich@...> 2001/11/09

Actually...its me.

[#24801] Re: XML libraries (Re: Re: ruby and webservices) — Tobias Reif <tobiasreif@...> 2001/11/09

Yukihiro Matsumoto wrote:

[#24861] Re: XML libraries (Re: Re: ruby and webservices) — TAKAHASHI Masayoshi <maki@...> 2001/11/11

Hi,

[#24877] Re: XML libraries (Re: Re: ruby and webservices) — Bob Hutchison <hutch@...> 2001/11/11

On 01/11/11 2:20 AM, "TAKAHASHI Masayoshi" <maki@open-news.com> wrote:

[#24700] Strange behaviour of Array#[] — Michael Neumann <neumann@...>

Hi,

12 messages 2001/11/08

[#24750] BUG: net/telnet.rb gives select invalid argument excepition — Ville Mattila <mulperi@...>

20 messages 2001/11/09

[#24810] Ruby-Tk; feature/bug/misunderstanding? mouse-location during when a key is pressed in the presence of TkMenubutton — Armin Roehrl <armin@...>

Hi,

8 messages 2001/11/09

[#24820] ANN: Triple-R - The Rubicon Results Repository — Dave Thomas <Dave@...>

16 messages 2001/11/10

[#24926] XML support in the standard lib — Tobias Reif <tobiasreif@...>

Hi,

128 messages 2001/11/12
[#24928] Re: XML support in the standard lib — Bob Hutchison <hutch@...> 2001/11/12

[#25011] Re: XML support in the standard lib; what exactly? — Tobias Reif <tobiasreif@...> 2001/11/13

PaulC wrote:

[#25018] Re: XML support in the standard lib; what exactly? — "Nat Pryce" <nat.pryce@...13media.com> 2001/11/13

The DOM is a pretty awkward API to both use and implement. An API based on

[#25126] Re: XML support in the standard lib; what exactly? — "James Britt (rubydev)" <james@...> 2001/11/14

>

[#25138] Re: XML support in the standard lib; what exactly? — "Simon St.Laurent" <simonstl@...> 2001/11/14

On Tue, 2001-11-13 at 20:53, James Britt (rubydev) wrote:

[#25151] Re: XML support in the standard lib; whatexactly? — "James Britt (rubydev)" <james@...> 2001/11/14

[#25202] Re: XML support in the standard lib;whatexactly? — "Nat Pryce" <nat.pryce@...13media.com> 2001/11/14

From: "Simon St.Laurent" <simonstl@simonstl.com>

[#25231] Re: XML support in the standard lib;whatexactly? — "James Britt (rubydev)" <james@...> 2001/11/15

[#25250] Re: XML support in the standard lib;whatexactly? — Tobias Reif <tobiasreif@...> 2001/11/15

James Britt (rubydev) wrote:

[#25251] Re: XML support in the standard lib;whatexactly? — Robert Feldt <feldt@...> 2001/11/15

On Thu, 15 Nov 2001, Tobias Reif wrote:

[#25020] Re: XML support in the standard lib; what exactly? — Robert Feldt <feldt@...> 2001/11/13

On Wed, 14 Nov 2001, Nat Pryce wrote:

[#25059] Re: XML support in the standard lib; what exactly? — Sean Russell <ser@...> 2001/11/13

Robert Feldt wrote:

[#25078] Re: XML support in the standard lib; what exactly? — Robert Feldt <feldt@...> 2001/11/13

On Wed, 14 Nov 2001, Sean Russell wrote:

[#25080] Re: XML support in the standard lib; what exactly? — Tobias Reif <tobiasreif@...> 2001/11/13

Hi all XMLers,

[#25102] Re: XML support in the standard lib; what exactly? — David Alan Black <dblack@...> 2001/11/13

Hello --

[#25157] Re: XML support in the standard lib; what exactly? — Tobias Reif <tobiasreif@...> 2001/11/14

Dave Thomas wrote:

[#25170] Re: XML support in the standard lib; what exactly? — chad fowler <chadfowler@...> 2001/11/14

[#25014] Re: XML support in the standard lib; what exactly? — Tobias Reif <tobiasreif@...> 2001/11/13

P.S.

[#25023] Re: XML support in the standard lib; what exactly? — Bob Hutchison <hutch@...> 2001/11/13

On 01/11/13 9:56 AM, "Tobias Reif" <tobiasreif@pinkjuice.com> wrote:

[#25027] Re: XML support in the standard lib; what exactly? — Tobias Reif <tobiasreif@...> 2001/11/13

Bob Hutchison wrote:

[#25037] Re: XML support in the standard lib; what exactly? — Bob Hutchison <hutch@...> 2001/11/13

On 01/11/13 11:21 AM, "Tobias Reif" <tobiasreif@pinkjuice.com> wrote:

[#24948] Refactoring tool for Ruby... — Stephan K舂per <Stephan.Kaemper@...>

Just being curious if someone has worked on a refactoring tool for

12 messages 2001/11/12

[#24955] Teach your kid math w/ruby — pete@... (Peter J. Kernan)

14 messages 2001/11/12

[#24958] Linux Magazine article — Dave Thomas <Dave@...>

53 messages 2001/11/12
[#26103] Re: Linux Magazine article — "Bill Kelly" <billk@...> 2001/11/22

[#26116] Re: Linux Magazine article — Jos Backus <josb@...> 2001/11/22

On Thu, Nov 22, 2001 at 10:20:04AM +0900, Bill Kelly wrote:

[#25029] Set class in Ruby — Yuri Leikind <YuriLeikind@...>

Hello all Ruby coders,

18 messages 2001/11/13

[#25082] exiting blox — Niko Schwarz <niko.schwarz@...>

Hi there,

17 messages 2001/11/13

[#25101] ANN: REXML 1.1a3 — Sean Russell <ser@...>

Hiho,

23 messages 2001/11/13

[#25276] GC question — Tony Smith <tony@...>

Hi there!

20 messages 2001/11/15
[#25777] Ruby in windows — "Mark Hahn" <mchahn@...> 2001/11/18

[#25788] RE: Ruby in windows — "Mark Hahn" <mchahn@...> 2001/11/18

This is what I get from command line:

[#25291] Re: ANN: REXML 1.1a3 — Ben Schumacher <BSchumacher@...>

Tobias Reif wrote:

24 messages 2001/11/15

[#25383] Arrays, iterators, and map/collect — "Hal E. Fulton" <hal9000@...>

Hello all...

12 messages 2001/11/16

[#25432] Why not xmlparser? (was: Re: XML support in the standard lib;whatexactly?) — "Christian Boos" <cboos@...>

32 messages 2001/11/16
[#25678] RE: Why not xmlparser? (was: Re: XML support in the standard lib;whatexactly?) — "James Britt (rubydev)" <james@...> 2001/11/16

> I may have missed something, but the original question that started the

[#25722] RE: Why not xmlparser? (was: Re: XML support in the standard lib;whatexactly?) — Sean Russell <ser@...> 2001/11/17

James Britt (rubydev) wrote:

[#25732] Re: Why not xmlparser? (was: Re: XML support in the standard lib;whatexactly?) — "James Britt (rubydev)" <james@...> 2001/11/17

>

[#25850] Re: Why not xmlparser? (was: Re: XML support in the standard lib;whatexactly?) — Sean Russell <ser@...> 2001/11/19

James Britt (rubydev) wrote:

[#25689] Would like feedback on script to remove unused import statements in java — "Thomas R. Corbin" <tc@...>

I use this script all the time when developing in java, it really helps a

20 messages 2001/11/17
[#25829] Re: Would like feedback on script to remove unused import statements in java — "Ralph Mason" <ralph.mason@...> 2001/11/19

Is there any documentation on this anywhere?

[#25830] Re: Would like feedback on script to remove unused import statements in java — ts <decoux@...> 2001/11/19

>>>>> "R" == Ralph Mason <ralph.mason@telogis.com> writes:

[#25916] Why the appended '\n' in IO.readlines — Jim Freeze <jim@...> 2001/11/20

Hi

[#25753] Misunderstanding or bug? — Dave Thomas <Dave@...>

18 messages 2001/11/18

[#25808] KDE or GNOME curiosity question... — Robert Hicks <bobhicks@...>

I was just curious which desktop (of the two mentioned in the subject)

80 messages 2001/11/19
[#26360] Re: [OT] Re: KDE or GNOME curiosity question... — "Bill Kelly" <billk@...> 2001/11/24

[#26374] Re: [OT] Re: KDE or GNOME curiosity question... — "Mark Hahn" <mchahn@...> 2001/11/24

[#26518] Re: [OT] Re: KDE or GNOME curiosity question... — Paul Brannan <pbrannan@...> 2001/11/26

> How hard would it be to have an option to use reference counting in a

[#26544] Re: [OT] Re: KDE or GNOME curiosity question... — "mark hahn" <mchahn@...> 2001/11/26

> Circular references will cause the object to stay around indefinitely

[#26746] Re: [OT] Re: KDE or GNOME curiosity question... — matz@... (Yukihiro Matsumoto) 2001/11/28

Hi,

[#26825] RE: Ref Counting (was KDE or GNOME curiosity question...) — "Mark Hahn" <mchahn@...> 2001/11/28

[#26827] Re: Ref Counting (was KDE or GNOME curiosity question...) — "Matt Armstrong" <matt+dated+1007407366.0f6d51@...> 2001/11/28

"Mark Hahn" <mchahn@facelink.com> writes:

[#25861] A bug invoking a method with send? — chr_news@... (chr_news@...)

Hi,

12 messages 2001/11/19

[#25907] String#== : Why not error with different type? — furufuru@... (Ryo Furue)

Hi there,

17 messages 2001/11/20

[#25954] a quick question — Tobias DiPasquale <anany@...>

Hi all,

21 messages 2001/11/20
[#25959] PocketPC — "Chad Fowler" <chadfowler@...> 2001/11/20

Has anyone gotten Ruby running (perhaps in some limited form) on the

[#26006] R: Re: Hello World considered harmful — Alessandro Caruso <a.caruso@...>

I thought the main reason people are moving towards Ruby instead of keep

19 messages 2001/11/21
[#26023] Re: R: Re: Hello World considered harmful — Dave Thomas <Dave@...> 2001/11/21

Alessandro Caruso <a.caruso@creditonline.it> writes:

[#26029] Re: R: Re: Hello World considered harmful — Erik B虍fors <erik@...> 2001/11/21

On Wed, 2001-11-21 at 15:31, Dave Thomas wrote:

[#26126] Conformance Test of XML Parsers in Ruby(20011122) — TAKAHASHI Masayoshi <maki@...>

Hi all,

27 messages 2001/11/22
[#26128] Re: Conformance Test of XML Parsers in Ruby(20011122) — Tobias Reif <tobiasreif@...> 2001/11/22

TAKAHASHI Masayoshi wrote:

[#26134] Re: Conformance Test of XML Parsers in Ruby(20011122) — David Alan Black <dblack@...> 2001/11/22

Hello --

[#26145] Re: Conformance Test of XML Parsers in Ruby(20011122) — Kevin Smith <kevinbsmith@...> 2001/11/22

--- David Alan Black <dblack@candle.superlink.net

[#26181] Re: NQXML Conformance (was Re: Conformance Test of XML Parsers in Ruby(20011122)) — martin@... (Martin v. Loewis) 2001/11/22

Jim Menard <jimm@io.com> writes:

[#26141] Passing class names to constructors. — Hugh Sasse Staff Elec Eng <hgs@...>

If I want to create a variable number of objects, all of

14 messages 2001/11/22

[#26205] Book "Rub in 21 days" Table of contents online — Markus Jais <mjais@...>

hi

17 messages 2001/11/23

[#26214] generating and serving SVG — Tobias Reif <tobiasreif@...>

Hi,

39 messages 2001/11/23
[#26215] Re: generating and serving SVG — Robert Feldt <feldt@...> 2001/11/23

On Fri, 23 Nov 2001, Tobias Reif wrote:

[#26270] Table: Ruby versus Smalltalk, Objective-C, C++, Java; — Armin Roehrl <armin@...>

Hi,

28 messages 2001/11/24

[#26293] The results are in... — Dave Thomas <Dave@...>

28 messages 2001/11/24
[#26365] Re: The results are in... — Albert Wagner <alwagner@...> 2001/11/24

<snip>

[#26377] Re: The results are in... — Robert Feldt <feldt@...> 2001/11/24

On Sun, 25 Nov 2001, Albert Wagner wrote:

[#26389] Re: The results are in... — Albert Wagner <alwagner@...> 2001/11/25

On Saturday 24 November 2001 05:03 pm, you wrote:

[#26391] Re: The results are in... — Robert Feldt <feldt@...> 2001/11/25

On Sun, 25 Nov 2001, Albert Wagner wrote:

[#26337] Re: Table: Ruby versus Smalltalk, Objective-C, C++, Java; — "john%johnknight.com@..." <john%johnknight.com@...>

16 messages 2001/11/24

[#26362] Selector Namespaces: A Standard Feature for Smalltalk? — "David Simmons" <david.simmons@...>

Here is an incentive for classic Smalltalk evolution...

26 messages 2001/11/24

[#26537] Ruby vs. Python: Decisions, Decisions — "Bob Calco" <rcalco@...>

Everyone:

32 messages 2001/11/26

[#26557] Re: Ruby vs. Python: Decisions, Decisions — "Mike Wilson" <wmwilson01@...>

21 messages 2001/11/26

[#26651] Vote in the current poll! — Robert Feldt <feldt@...>

Hi,

26 messages 2001/11/27
[#26685] Re: Vote in the current poll! — ptkwt@...1.aracnet.com (Phil Tomson) 2001/11/27

In article <Pine.GSO.4.21.0111271419390.9896-100000@godzilla.ce.chalmers.se>,

[#26702] Re: Vote in the current poll! — Robert Feldt <feldt@...> 2001/11/27

On Wed, 28 Nov 2001, Phil Tomson wrote:

[#26752] Anyone know of a Regexp pattern random string generator? — "Ross Shaw" <rshaw1961@...>

I'm looking for some Ruby that given a Regexp pattern will generate a random

10 messages 2001/11/28

[#26782] RE: overload possible? — Wyss Clemens <WYS@...>

No, UNLESS you ask Guy Decoux (ts) to give you his *extension*

31 messages 2001/11/28
[#26791] Re: overload possible? — ts <decoux@...> 2001/11/28

>>>>> "W" == Wyss Clemens <WYS@helbling.ch> writes:

[#26792] Re: overload possible? — Robert Feldt <feldt@...> 2001/11/28

On Wed, 28 Nov 2001, ts wrote:

[#26847] Re: overload possible? — "Harry Ohlsen" <harryo@...> 2001/11/28

Here's a slightly better version, which also fixes the problem that

[#26860] Re: overload possible? — nobu.nokada@... 2001/11/29

At Thu, 29 Nov 2001 08:13:36 +0900,

[#26861] Re: overload possible? — "Rich Kilmer" <rich@...> 2001/11/29

excellent idea...how about this refactoring...

[#26894] short article draft for review — Tobias Reif <tobiasreif@...>

Hi,

26 messages 2001/11/29
[#26898] Re: short article draft for review — David Alan Black <dblack@...> 2001/11/29

Hi --

[#26899] Re: short article draft for review — Tobias Reif <tobiasreif@...> 2001/11/29

David,

[#26902] Re: short article draft for review — David Alan Black <dblack@...> 2001/11/29

Hi --

[#26973] thoughts on virtual base classes, interfaces — ptkwt@...1.aracnet.com (Phil Tomson)

16 messages 2001/11/29

[#26976] first class functions in Ruby — "MikkelFJ" <mikkelj-anti-spam@...1.dknet.dk>

In the thread on language design, I mentioned a wish for functions as first

15 messages 2001/11/29

[#26984] Can someone explain TupleSpaces? — ptkwt@...1.aracnet.com (Phil Tomson)

I looked at the examples that came with drb, but I'm still not quite

16 messages 2001/11/29

[#27054] Using Enumerable — Peter Hickman <peter@...>

Im trying to write my own each method for a 'sort of' range class that

19 messages 2001/11/30
[#27057] Re: Using Enumerable — David Alan Black <dblack@...> 2001/11/30

Hello --

[#27060] Re: Using Enumerable — Peter Hickman <peter@...> 2001/11/30

Thanks to all who replied, like all ruby it was alot simpler than I

[#27066] Musing — Dave Thomas <Dave@...>

32 messages 2001/11/30
[#27079] RE: Musing — "Rich Kilmer" <rich@...> 2001/11/30

Do it Dude!

[ruby-talk:24482] Re: "yield called out of block"

From: pcs3@...
Date: 2001-11-07 05:22:52 UTC
List: ruby-talk #24482
David Alan Black wrote:
> But I don't think eachOver57 would be likely to be an iterator.  I
> think it would be likely to *call* an iterator:
> 
>   class Array
>     def eachOver57
>       find_all do |e| e > 57 end
>     end
>   end
> 
>   list = [12,34,56,78,90]
>   nums = list.eachOver57 # => [78,90]
> 
> So yes, what gets returned is a stored array, but creating that array
> involves iterating over another array (in this case, with find_all).

eachOver57 was a trivial example, but isn't there a defacto convention that each 
methods are iterators?  Maybe allOver57 would be a better name for a method 
which couldn't be used as an iterator as well.
 
> I'm still not getting it.  "yield" means "yield control to a
> block/proc".  You seem to be talking about a kind of built-in default
> accumulator, which may or may not be useful (not sure yet :-) but
> which doesn't seem to me to involve yielding.

Well, yield would still yield control to a block, just not one supplied by the 
user, and one which must have additional information passed-in by yield if it is 
to impose structure (which increasingly seems to me like more trouble than its 
worth).  In addition, yield would return whatever the block returned (on the 
block's final call).
 
> For instance: when you say "have an iterator method (which doesn't
> have to return anything else) return a call to yield", what I would
> want to know is: to what is that yield call yielding control?  And if
> nothing -- if this new "yield" isn't yielding -- , then why is it
> called "yield"?

yield would detect that it had been called without being given any block, and 
would then (instead of causing an error) yield control to a default accumulator 
block (but in this case yield would need to pass-in an additional argument-- the 
number of args yield was called with, so structure can be imposed by the block, 
which would need to have some state information in-between calls, not least of 
all the Array it's building up).  Every call to yield in this case would return 
whatever the block returned on it's final call.

> (By the way, I'm not as happy as you are about dismissing return
> values of iterators, but we can leave that to the side :-)

This wouldn't have to interfere with the return values of iterators at all if 
you didn't want to (for the same reason it wouldn't work in all cases).  If a 
block is supplied and the iterator method is used normally, then there would be 
no change in behavior, because yield wouldn't be yielding control to the default 
block and passing in additional information to this block, which could be 
thought of as an accumulator, and the return value of yield wouldn't be 
modified.  If you want to return something else in the iterator method that's 
fine as well (in fact, if you only wanted the iterator method for some other 
return value, then this would save you from passing-in a do-nothing block).


I'm almost tempted to write a proof-of-concept demonstrator.  But anything I 
could write would have some limitations-- namely, that it would only work on its 
first use.  Because each time the block is called it accumulates state 
information, so how would it know either that it had left its calling context, 
or entered a new one so clear all the state information and start over?  Let me 
try to illustrate what I mean:

def someIterator
	altyield 1  #where altyield is whatever I could implement
end

nums = someIterator #nums is now [1]
nums = someIterator #nums is now [1, 1]

From this you can see though, that someIterator only returns the list because 
altyield was the last thing to return something (and hence is the return value 
of the method).  As it currently stands yield just returns nil.  Had you 
returned something after altyield, nums would be whatever that is, and the same 
after both calls.  But of course, this is all I could implement, because 
altyield would just be a method, so how would I get a handle to whatever block 
was passed into someIterator?  Any demonstrator I could write would have to 
accept a named block if one was supplied (or nil to indicate that no block is 
supplied, so use the default accumulator block).

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