[#405207] Does `self` and `scope(local)` operate parallels? — "Kumar R." <lists@...>

I am heavily confused with the topic when thinking `self` and `local

21 messages 2013/03/01
[#405211] Re: Does `self` and `scope(local)` operate parallels? — "Kumar R." <lists@...> 2013/03/01

Just to help experts out there I am clearing my statement once again

[#405242] Confusion in instance method calls of super class from subclass — "Kumar R." <lists@...>

I was just playing to see the instance method calls from the subclass

16 messages 2013/03/02
[#405252] Re: Confusion in instance method calls of super class from subclass — Hans Mackowiak <lists@...> 2013/03/03

YOU DID NOT READ WHAT I WAS WRITTEN:

[#405250] Extending Ruby. Little help or guidance if you are willing! — Cliff Rosson <cliff.rosson@...>

Hi Folk,

21 messages 2013/03/03
[#405393] Re: Extending Ruby. Little help or guidance if you are willing! — nannasin smith <lists@...> 2013/03/06

I've tried to do some reading but some of this is a bit over my head.

[#405549] Re: Extending Ruby. Little help or guidance if you are willing! — Cliff Rosson <cliff.rosson@...> 2013/03/10

Haven't been able to touch this in a week but I had a few minutes to look

[#405550] Re: Extending Ruby. Little help or guidance if you are willing! — Bartosz Dziewoński <matma.rex@...> 2013/03/10

On Sun, 10 Mar 2013 04:41:32 +0100, Cliff Rosson <cliff.rosson@gmail.com> wrote:

[#405600] Re: Extending Ruby. Little help or guidance if you are willing! — Cliff Rosson <cliff.rosson@...> 2013/03/11

Got ya. So it doesn't really matter if I convert things to ID and compare

[#405271] Confusion with Ruby's "case/when" block statement — "Kumar R." <lists@...>

Ruby uses `===` operator on the `case/when` type execution style.Now It

13 messages 2013/03/03

[#405310] How `next` works in ruby with `unless` ? — "Kumar R." <lists@...>

The `next` statement is used to skip a part of the loop and continue

25 messages 2013/03/04
[#405311] Re: How `next` works in ruby with `unless` ? — Joel Pearson <lists@...> 2013/03/04

Learn what semicolons do in Ruby.

[#405312] Re: How `next` works in ruby with `unless` ? — Matthew Kerwin <matthew@...> 2013/03/04

What Joel said.

[#405313] Re: How `next` works in ruby with `unless` ? — "Kumar R." <lists@...> 2013/03/04

Matthew Kerwin wrote in post #1100097:

[#405323] YourLanguageSucks — Kiswono Prayogo <kiswono@...>

Hi, i found this link.. https://wiki.theory.org/YourLanguageSucks

10 messages 2013/03/05

[#405376] When can one call themselves a “Rubyist”? — Rafal Chmiel <lists@...>

I was wondering what that term even meant. Is it something to do with

10 messages 2013/03/05

[#405400] Bignum-Fixnum-Numeric confusion — Pritam Dey <lists@...>

Hi,

13 messages 2013/03/06

[#405444] Question regarding automating some Outlook/IMAP and pdf parsing functions w/ ruby? — Ed Zimmerman <lists@...>

Hello,

20 messages 2013/03/07

[#405477] Compiling Ruby 2.0, problem with OpenSSL — "Piotr P." <lists@...>

Trying to compile Ruby 2.0 from source, having problem with it, getting

10 messages 2013/03/07

[#405495] RubyExcel class. Useful? — Joel Pearson <lists@...>

I've managed to create a (relatively) stable data-processing class which

32 messages 2013/03/08

[#405570] Confusion with block local variable declaration with block variable declaration within the pipe `|` — Love U Ruby <lists@...>

Why are we not allowed to create local variables or new object with

17 messages 2013/03/11

[#405597] Confusion with empty block printing — Love U Ruby <lists@...>

When I typed the below in my IRB:

18 messages 2013/03/11

[#405608] Access values for JSON.parse response — Nicole Villette <lists@...>

Hello, Does anyone know who to get the values from a nested hash in

17 messages 2013/03/11

[#405630] Confusion with some Module methods. — Love U Ruby <lists@...>

Can anyone help me to understand how the below module methods works?

16 messages 2013/03/12

[#405656] Confusion with Strings — Love U Ruby <lists@...>

From the book I read a line about string :

18 messages 2013/03/12

[#405762] Understanding Ruby Classes, Objects and Methods. — Kedar Mhaswade <lists@...>

Dear Rubyists,

12 messages 2013/03/13

[#405931] Finding one's way with 'super' in define_method/alias_emthod — Marcin Rzeźnicki <marcin.rzeznicki@...>

Hi all!

12 messages 2013/03/18
[#405935] Re: Finding one's way with 'super' in define_method/alias_emthod — Robert Klemme <shortcutter@...> 2013/03/18

On Mon, Mar 18, 2013 at 5:50 PM, Marcin Rze添nicki

[#405936] Re: Finding one's way with 'super' in define_method/alias_emthod — "Marcin R." <lists@...> 2013/03/18

Robert Klemme wrote in post #1102151:

[#405942] Re: Finding one's way with 'super' in define_method/alias_emthod — Robert Klemme <shortcutter@...> 2013/03/18

On Mon, Mar 18, 2013 at 8:39 PM, Marcin R. <lists@ruby-forum.com> wrote:

[#405986] Ruby tainting on primitives — "Nicolas V." <lists@...>

Hi there,

18 messages 2013/03/20

[#405987] Why was the object_id for true and nil changed in ruby2.0? — Bharadwaj Srigiriraju <lists@...>

irb(main):001:0> true.object_id

11 messages 2013/03/20

[#406015] fixedpnt 0.0.1: Binary Fixed Point Calculations — Axel Friedrich <lists@...>

https://github.com/Axel2/fixedpnt.rb

12 messages 2013/03/20

[#406184] Nokogiri help parsing HTML — Paul Mena <lists@...>

I'm relatively new to Ruby (and therefore Nokogiri) and am trying to

18 messages 2013/03/26

[#406258] Translation Project — Jeremy Henderson <lists@...>

Hello all! This is my first post! I started learning Ruby about 3 weeks

22 messages 2013/03/28

[#406291] Hash with default — Harry Kakueki <list.push@...>

I would like to make a hash like h2 with the default described by h in one

12 messages 2013/03/29

[#406375] Ruby Gotchas presentation slides — Dave Aronson <rubytalk2dave@...>

I recently made available the slides for a presentation I did

13 messages 2013/03/30

[#406387] Private setters can be called by self, why not getters? — Josh Cheek <josh.cheek@...>

class Counter

9 messages 2013/03/31

Re: Understanding Ruby Classes, Objects and Methods.

From: Robert Klemme <shortcutter@...>
Date: 2013-03-14 13:28:07 UTC
List: ruby-talk #405791
On Thu, Mar 14, 2013 at 1:57 PM, Kedar Mhaswade <lists@ruby-forum.com> wrote:
> Thanks, Robert!

You're welcome!

>> abc is an instance of String
>> This is not true. Said expression is a constructor of a String which
>> will return a different String instance on every evaluation.
>
> I don't find that statement in the doc. I only have:
>
> 2. "abc" is an instance of String.

Yes, that's it.

> and I believe that is correct because String is the class of all strings
> in Ruby.

irb(main):001:0> 5.times { s = "abc"; p s.object_id }
-1073589128
-1073589178
-1073589208
-1073589228
-1073589268
=> 5

>> "Depending upon the data type of the object, a variable is a name for
>> the object itself or a reference to it."
>> In an introductory text I would not _start_ with this statement.
>> Better: "A variable is a place that stores a reference to an object."
>> Same for your treatment of "immediate values". This is really an
>> implementation detail which should be taught much later.  I think it
>> helps understanding if one does _not_ bring this up that early.
>> Actually, from a point of view of the user of the language it does not
>> matter _at all_ (only for performance, but not functionality wise).
>
> I agree. But integers is what many of us start with playing in irb. So,
> I thought it was appropriate to recognize the difference between
> instances of String (e.g. "abc") and those of an Integer (e.g. 1).

The fact that Fixnums are immediate values is _completely_ irrelevant
for how they are used.

>> "If the method were not found in String, Ruby would have followed the
>> superclass (sc, green arrow) links in search for the method
>> definition." and "It creates a new anonymous class object and inserts
>> it into Foos superclass chain!"
>> This is not true.  The chain of classes and modules found via
>> Module#ancestors is traversed instead.  There is no need for a new
>> anonymous class.  The only place where new classes are automatically
>> allocated is the singleton class of an instance.
>
> I see. But I thought Dave Thomas also says something similar (in his
> book) to what I wrote. The topic is about including Modules in Classes.

I don't have the book handy.  Maybe you can quote the relevant text.

> Even if you say that the chain returned by ancestors is traversed, where
> is the reference for code for something like Mod#m? Since the same
> module Mod can be included in several classes, an instance of anonymous
> class for each including class seems right. But I agree, I don't yet
> know how this happens internally in the interpreter.

So you say you do not know how it works but claim there is an
anonymous class - solely because it "seems right"?  Why does it "seem
right"?  I had though you wanted to convey facts.

> Also, I tried to logically explain why included module's methods _have
> to_ get preference over those inherited from superclasses.

You do not need anonymous classes for that.

>> I stopped reading there as I found your diagram about singleton quite
>> complicated and unclear.
>
> Not a problem. I will try to clarify the diagrams. Alas, they are not
> doing their job :-(. But I believe they are correct (and this stuff is
> complex).

I didn't say "all".  Just the singleton class diagram put me off.

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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