[#395238] rubygem: ispunity (unite all your internet connections) — Arun Tomar <tomar.arun@...>
Dear friends,
Hi sir,
Hi!
[#395241] assert_equal ([:r, :u, :b, :e, :q, :u, :e] __), [:b, :q] — David Gustafson <daveg@...>
This is part of a online ruby quiz. Just doing it for my own
[#395250] Overwriting one Ruby array or arrays with another — Craig Law <lists@...>
Hi
[#395258] array of strings - finding letter combinations — "Sebastjan H." <lists@...>
Hi All,
for some reason the mailing list server rejected this post, so i'll
Thank you all for your kind help. I'll try to complete this task and
Sebastjan H. wrote in post #1059386:
Hi,
Hi Jan,
Sebastjan H. wrote in post #1059226:
Ok, thx. Just so I understand correctly, these two lines are just
[#395262] rb_errinfo() "captures" more than exceptions, but also Interrupt and SystemExit — Iñaki Baz Castillo <ibc@...>
Hi, my Ruby C extension use rb_protect() to rescue Ruby errors in the
[#395279] Psych dumping in binary — Jim Hranicky <jfh@...>
I've got an app that I use ascii-8bit encoding as the default to
[#395290] How can i load image and display it using ruby? — gmspro gmspro <lists@...>
Which library/api is used to load and display image using ruby?
[#395306] rspec-2.10 is released! — David Chelimsky <dchelimsky@...>
rspec-2.10 is released!
[#395311] install ruby 1.9.3 on Mac — Amidou NDIAYE <lists@...>
I would like to upgrade my actual ruby version 1.8.7 installed on my Mac
[#395335] proper way to create truly new dup/cloned object? — ruby gem <lists@...>
a = "pass"
[#395336] break down of differences between interpreters? — ruby gem <lists@...>
All I can ever find is performance comparisons, but it must be more than
On Sun, May 06, 2012 at 08:13:26PM +0900, ruby gem wrote:
[#395344] Ruby scripting? — "cristian d." <lists@...>
Hi my name is Christian,
[#395352] mkmf: how to include .c and .h files within a subdirectory? — Iñaki Baz Castillo <ibc@...>
Hi, having the following file tree under my ext/ directory:
[#395357] Why Enumerator#next does not return more than one value? — Földes László <lists@...>
If I have an Enumerator which yields elements of a mathematical series
On Mon, May 7, 2012 at 3:10 PM, Fdes L疽zl<lists@ruby-forum.com> wrote:
Robert Klemme wrote in post #1059863:
Florian Gilcher wrote in post #1059865:
[#395373] How to use Data_Wrap_Struct to assign the DATA VALUE to an exsiting Ruby object? — Iñaki Baz Castillo <ibc@...>
Hi, my code receives an arbitrary klass name (provided by the user)
I単aki Baz Castillo <ibc@aliax.net> wrote:
2012/5/9 Eric Wong <normalperson@yhbt.net>:
[#395402] How to make a given klass to include a module — Iñaki Baz Castillo <ibc@...>
Hi, simple code:
Am 09.05.2012 13:36, schrieb Iテアaki Baz Castillo:
2012/5/9 Quintus <quintus@quintilianus.eu>:
On Wed, May 9, 2012 at 1:52 PM, Iki Baz Castillo <ibc@aliax.net> wrote:
[#395413] Hooking into the VM's shutdown process — "Darryl L. Pierce" <mcpierce@...>
I've got a native extension that needs to run in a thread separate
Am 09.05.2012 17:44, schrieb Darryl L. Pierce:
[#395423] get pixel color of a screen — Ivan Vilches Basaul <ivan_vilches@...>
[#395429] passing via instance variable or regular () — sam jam <lists@...>
def first
[#395435] How to create a sinatra app that can create ebooks on heroku? — Kenley Tan <kenleytan@...>
Hi guys,
On Thu, May 10, 2012 at 12:54 AM, Kenley Tan <kenleytan@yahoo.com> wrote:
Hi Hassan,
[#395449] syntax error, unexpected ',' , expecting ')' — David Acosta <lists@...>
Hello people, i am new at ruby and ror developing and i need your help
[#395463] I'm looking for a Metaprogramming Project — Phil Stone <lists@...>
Hello,
Thanks for all the feedback!
[#395464] Why do you think of NilClass#to_proc? — Intransition <transfire@...>
I have two minds about using a NilClass#to_proc
[#395478] Beginner's questions — Manfredi Pivetta <lists@...>
Hello everyone.
[#395492] Is it safe to use rb_hash_delete() without having the GVL? — Iñaki Baz Castillo <ibc@...>
Hi, my code is a C event loop that runs without the GVL (so other Ruby
Hi,
2012/5/14 SASADA Koichi <ko1@atdot.net>:
[#395506] Accessing child variables — Sm sm <lists@...>
#!/usr/bin/env ruby-1.9.2
[#395528] net-ssh: Trouble forwarding local ports to a remote server — Maxwell Pray <lists@...>
Here's the plan: I need to forward a Samba connection on my machine to a
[#395536] Visibility of ruby applications — Kacper Borodziuk <lists@...>
I have a question. is there a ruby command or set of commands that can
[#395548] A million reasons why Encoding was a mistake — Marc Heiler <lists@...>
Newcomer wants to try Ruby.
I will add that the OP is not entirely alone in his opinion.
On Wed, May 16, 2012 at 9:02 AM, Brian Candler <lists@ruby-forum.com> wrote:
[#395549] Option Parser with an optional flag/switch for last argument — Neubyr Neubyr <lists@...>
I am using OptionParser to parse command-line options. I would like to
[#395551] How to ensure that a block runs entirely after other threads? (Thread.exclusive does not "work") — Iñaki Baz Castillo <ibc@...>
Hi, I expected that in the following example code, thread t1 would not
On Tue, May 15, 2012 at 5:36 PM, Iki Baz Castillo <ibc@aliax.net> wrote:
On 16 May 2012 17:27, Robert Klemme <shortcutter@googlemail.com> wrote:
[#395565] QtRuby: How to edit data in a TableModel/TableView? — Cristhian Boujon <lists@...>
Hello all,
[#395575] GUI with ruby on windows — David Acosta <lists@...>
hello friends, i am a begginer and i have a litlle question, how can i
hi,
[#395588] problem installing TkRuby on ubuntu 12.04 — Bharadwaj Srigiriraju <lists@...>
Might seem a little long, but it's actually pretty small...
From: Bharadwaj Srigiriraju <lists@ruby-forum.com>
Hidetoshi NAGAI wrote in post #1061107:
[#395604] what is going wrong here? — roob noob <lists@...>
Notice the initialization of both classes in each of the examples, if
First let me thank you for all of the help you have been :). It is much
On Thu, May 17, 2012 at 6:38 PM, roob noob <lists@ruby-forum.com> wrote:
Hi,
How do I iterate through a Class so that I can perform some action on each object? For example...
[#395611] Which exception classes does "rescue" trap? — Iñaki Baz Castillo <ibc@...>
Hi, using Ruby 1.9 I've realized that "rescue" traps more than
[#395646] rb_gc_register_address() or rb_gc_mark()? — Iñaki Baz Castillo <ibc@...>
Hi, I've bad experiences with rb_gc_register_address(), it does never
2012/5/17 Iñaki Baz Castillo <ibc@aliax.net>:
2012/5/17 I単aki Baz Castillo <ibc@aliax.net>:
2012/5/17 Iñaki Baz Castillo <ibc@aliax.net>:
2012/5/17 I単aki Baz Castillo <ibc@aliax.net>:
On May 17, 2012, at 12:24, Iki Baz Castillo wrote:
i create an hash from the C-side, mark them with rb_global_variable and
[#395664] why is else without rescue useless with statement modifiers? — roob noob <lists@...>
def sane?
[#395686] reading from and writing to a Unicode encoded file — "Sebastjan H." <lists@...>
Hi,
Hello,
Regis d'Aubarede wrote in post #1061272:
Sebastjan H. wrote in post #1061276:
Regis d'Aubarede wrote in post #1061277:
Hi,
Sebastjan H. wrote in post #1061483:
Hi Sebastjan,
ashbb shoeser wrote in post #1061501:
Hi Sebastjan,
ashbb shoeser wrote in post #1061510:
Hi Sebastjan,
ashbb shoeser wrote in post #1061553:
Hi Sebastjan,
[#395688] Methods as arguments? — Robinson Risquez <lists@...>
Hi, I was experimenting with the arguments of the methods and I have a
there are two ways:
Hans Mackowiak wrote in post #1061260:
You would have to implement def aaa a little differently.
[#395706] Ruby- puts with accents — "Mariano José G." <lists@...>
Hello Guys!,
[#395726] Rubygems problem on ubuntu 12 (server) — "cristian d." <lists@...>
Hi!
[#395733] Having trouble with instructions in The Pragmatic Programmers Learn to Program — "kerri l." <lists@...>
I have been reading the book (Pragmatic Programmers) and I'm having
[#395740] ? Ruby through CGI and Rails — Shaun Lloyd <list@...>
Hi everybody,
I would not consider CGI obsolete. Unless you are referring to ruby's
Shaun Lloyd wrote in post #1061455:
On 22/05/12 03:37, Brian Candler wrote:
Shaun Lloyd wrote in post #1061602:
On 23/05/12 19:36, Brian Candler wrote:
Shaun Lloyd wrote in post #1061834:
[#395744] ruby in a box — Martin DeMello <martindemello@...>
I've been thinking about the minimal feature set a beginner-friendly
[#395752] Why UBF() is called even if Ruby traps signals ?? — Iñaki Baz Castillo <ibc@...>
Hi, according to the doc of rb_thread_blocking_region() (or
2012/5/21 I単aki Baz Castillo <ibc@aliax.net>:
I単aki Baz Castillo <ibc@aliax.net> wrote:
2012/5/22 Eric Wong <normalperson@yhbt.net>:
[#395773] spawn a process and keep the output, but stdout -> $stdout — Roger Pack <lists@...>
Hello all.
[#395787] Changing self class from inside a method?? — David Madison <lists@...>
Let's start off with the assumption I want a method that allows an
[#395804] Disginguishing object types — Doug Jolley <lists@...>
Frequently hash values are a mixture of object types. In the case at
[#395806] Opinion on String#camelcase — Intransition <transfire@...>
Recently I adjusted Ruby Facets String#camelcase method to leave the first
[#395841] Memory-efficient set of Fixnums — George Dupre <lists@...>
Hi,
Thanks, but Hash has an even bigger memory imprint, so that won't do
Thank you for your help,
> I have to:
[#395842] How to replace a letter with a corresponding number — Rich McMullen <lists@...>
I am working through the Ruby Quiz website and I am already stuck on
[#395883] looking for a ruby idiom : r=foo; return r if r — botp <botpena@...>
Hi All,
botp wrote in post #1061908:
On Thu, May 24, 2012 at 7:30 AM, Llelan D. <lists@ruby-forum.com> wrote:
On 24 May 2012 19:30, Robert Klemme <shortcutter@googlemail.com> wrote:
thank you all, matt/llelan/robert.
On Thu, May 24, 2012 at 4:50 PM, botp <botpena@gmail.com> wrote:
[#395901] Don't override it - Use it — Doug Jolley <lists@...>
I am learning Ruby. It is my understanding that when we "override" a
Hi,
> And it *is* actually called overriding:
Doug Jolley wrote in post #1062056:
[#395902] rb_protect() with more than a single parameters — Iñaki Baz Castillo <ibc@...>
Hi, rb_protect() is declared as:
[#395904] Could Ruby GC my VALUE in while acquiring the GVL? — Iñaki Baz Castillo <ibc@...>
Hi, I'm in C land without GVL and give value to a static VALUE
[#395914] Modify an attribute in a method? — Robinson Risquez <lists@...>
Hi all, I write the following problem to see if you can clarify me:
Hello,
[#395929] accessing data in a ruby array — "Maksim D." <lists@...>
I have this array. I want to access the stuff in the hashes.
[#395960] SimpleCov error on Ruby 1.9.3 (but OK on 1.9.2) — Antoine Proulx <proulx.antoine@...>
Hi,
[#395961] looking for a ruby equivalent of python's ply — botp <botpena@...>
Hi all, subject says all. am looking a ruby equivalent of python's ply
[#395966] Am I justified to use a global variable if it must be used in all scopes? — Phil Stone <lists@...>
Hello,
On Sun, May 27, 2012 at 2:33 PM, Phil Stone <lists@ruby-forum.com> wrote:
[#395979] extconf.rg and #ifdef — Iñaki Baz Castillo <ibc@...>
Hi, depending whether my Ruby C extension is being compiled on *nix or
On May 28, 2012, at 03:57, Iki Baz Castillo wrote:
[#395991] Where is tcpserver.c Included By socket.c? — James Harrison <jam@...>
Hey folks,
[#396000] faster CSV writing — steven gre <lists@...>
trying to take scraped info business name address and phone# i can get
On Mon, May 28, 2012 at 9:21 PM, steven gre <lists@ruby-forum.com> wrote:
[#396010] does this leak more than the size of the string via timing side channels — rooby shoez <lists@...>
string1 = "string"
Yes but I imagine that Ruby returns false on the first mismatch. So
On May 29, 2012 7:28 AM, "rooby shoez" <lists@ruby-forum.com> wrote:
Ok, now I get it,
yuck the first example has issues I just realized, how about this way:
[#396038] Is it possible to avoid longjmp in exceptions, Thread#kill, exit(), signals? — Iñaki Baz Castillo <ibc@...>
Hi, my Ruby C extension runs a C loop (libuv) without GVL. At some
Please forget this for now. I've realized that my call to rb_protect()
Iñaki Baz Castillo писал 29.05.2012 22:37:
[#396051] Problem with duplicated values in writing to an array — Thiel Chang <schang@...>
Hi,
[#396061] Newbie question: command line to execute a method from .rb file — "n/a n/a" <lists@...>
Hi there -
[#396071] The last question about rb_gc_register_address(): a case in which in works with dynamic memory — Iñaki Baz Castillo <ibc@...>
Hi, what I understand (after some useful threads in this mailist)
2012/5/30 I単aki Baz Castillo <ibc@aliax.net>:
Re: A million reasons why Encoding was a mistake
Austin Ziegler wrote in post #1061436:
> This is *not* a Ruby problem, this is a *data* problem.
Leaving aside the point that not all data is text, you still need a
clear conceptual model to be able to reason about your program.
In Python 3, there is a clear distinction between "characters" and "a
sequence of bytes which encode those characters". They are two
completely different classes and cannot be combined (e.g. a+b will
always fail if a is str and b is bytes). It's also symmetrical: you
convert from bytes to characters as text enters your program, and from
characters to bytes as text leaves it.
(Aside: I know that Python only supports Unicode characters, but this is
just an implementation limitation. There could be a third class
"gb2312str" if desired, and additional classes for other character sets
which are not subsets of Unicode)
Ruby muddles these concepts by having all strings be a sequence of bytes
plus the encoding, which in turn muddles the concepts of "character set"
and "a method of encoding that character set".
Now, you could argue that Ruby is actually implementing the Python 3
approach but in a "lazy" way: by not explicitly converting bytes to
characters until required, it avoids potentially unnecessary work. But
if so, it's half-baked. For example, you cannot combine a UTF16-LE
string with a UTF16-BE string, even though they are the same character
set (Unicode). What's worse is that a UTF16-LE string will sort
differently to a UTF16-BE string (because ruby 1.9 sorts by byte
ordering, which happens to work for UTF8 but not all other encodings of
Unicode). So it kind-of behaves like a string of characters, except that
it doesn't.
Furthermore, ruby sometimes lets you combine objects representing
"characters" and "bytes", or "characters with encoding A" and
"characters with encoding B". Whether it is allowed or not depends on
the run-time contents of those objects.
If a = b + c *always* crashed when b and c had different encodings, I
would really not have a problem with any of this. Your test case would
immediately catch it, you fix it, problem solved.
However ruby 1.9's insidious behaviour means that b + c may *or may not*
crash depending not only the encodings but the actual content of the
strings at that instant. One perfectly reasonable set of tests may pass;
actual application data may fail.
Finally, ruby is asymmetrical. On input, encodings are tagged; on
output, they are ignored (by default). From files, the environment
encoding is used; from sockets, the ASCII_8BIT encoding is used. WIth
regexps, invalid strings cause an exception; with String#[] they do not.
It is just an utter dog's breakfast of arbitrary rules which you just
have no choice but to learn.
Some people see ruby 1.9's highly complex encoding implementation as a
triumph of engineering; I see it as design smell.
> Matz and others have worked very hard to make sure that Ruby 1.9 works
> well if you follow certain rules regarding your inputs and outputs.
... which one has to absorb by osmosis. Certainly the core API docs
don't give these rules; in fact they give precious little about the
encoding semantics of String. And you can't get much more of a core part
of the language than String.
Want to find out what String#[] does when given a string which contains
invalid characters in its declared encoding? The docs won't help you.
Try it and see. Or go to the C source code.
Of course, because every String is now two-dimensional (x = sequence of
bytes, y = Encoding) there is a much higher requirement to document
every method which acts on a string or returns on a string, because
there is a much larger variety of inputs and outputs to consider.
Take strings with invalid characters, for example, or the fact that
every returned string also has an encoding and you need to document how
it is chosen. (For example Net::HTTP: does it return strings with
encoding from the Content-Type header? You tell me)
Incidentally, strings with invalid characters are not an edge case or
only for erroneous input. Ruby encourages you to do things like:
txt = sock.read(4096) # txt likely to contain a split character
at the end
This could be dealt with if explicitly converting bytes to characters at
some point (you'd buffer the extra bit). By not having this explicit
conversion, you are quite likely to have byte patterns which don't
represent *any* character. Yes you can do the buffering yourself; I'm
just saying that all methods need to *document* whether they do accept
strings with invalid bytes, and how they handle them.
> If you don't respect your encodings, they will bite you. They may not
> bite you up front (as they do with Ruby, because it exposes these
> things which are painful), but they *will* bite you.
Certainly you need to know about character sets and how they are
encoded. This does not imply that ruby does it in a sane way. And as I
said before, if Ruby were to bite you consistently, it would be much
better.
> Ruby got it right, because it acknowledges that (a) this is hard and
> (b) gives you the tools you need in order to make this less painful.
> It also doesn't (c) incorrectly assume that everything is or can be
> expressed safely in Unicode. (Shift-JIS will not roundtrip to Unicode
> and back for some characters.)
That's kind of irrelevant, since ruby 1.9 doesn't really handle
Shift-JIS either, except to transcode it.
--
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