[#407882] Ruby extremely slow compared to PHP — Mick Jagger <lists@...>

Hello there, how are you? Hope you are fine. I am a PHP programmer

17 messages 2013/06/02

[#407908] TCPServer/Socket and Marshal problem — Panagiotis Atmatzidis <atma@...>

Hello,

18 messages 2013/06/03

[#407946] Is rubyquiz.com dead? — Alphonse 23 <lists@...>

Thread title says everything.

18 messages 2013/06/04

[#408012] Need help understanding recursion. — pedro oliva <lists@...>

Ive been reading Chris Pine's book 'Learn to Program' and its been going

11 messages 2013/06/06

[#408129] Getting Started With Development — Chamila Wijayarathna <cdwijayarathna@...>

I'm new to Ruby Development. I downloaded source from Github, but couldn't

24 messages 2013/06/11
[#408131] Re: Getting Started With Development — Per-erik Martin <lists@...> 2013/06/11

Ruby is often installed on linux, or can be easily installed with the

[#408146] Re: Getting Started With Development — "Chamila W." <lists@...> 2013/06/11

Per-erik Martin wrote in post #1112021:

[#408149] Re: Getting Started With Development — "Carlo E. Prelz" <fluido@...> 2013/06/11

Subject: Re: Getting Started With Development

[#408198] NokoGiri XML Parser — "Devender P." <lists@...>

Hi,

11 messages 2013/06/13

[#408201] trying to load a .rb file in irb — "Eric D." <lists@...>

I am trying to load a ruby program into irb and it will not load.

12 messages 2013/06/13

[#408205] Can I use Sinatra to render dynamic pages? — Ruby Student <ruby.student@...>

Hell Team,

18 messages 2013/06/13
[#408219] Re: Can I use Sinatra to render dynamic pages? — Nicholas Van Weerdenburg <vanweerd@...> 2013/06/14

You should be able to do this without JavaScript by using streaming.

[#408228] Re: Can I use Sinatra to render dynamic pages? — Ruby Student <ruby.student@...> 2013/06/14

Well, I got some good suggestions from everyone here. I thank you all for

[#408275] Compare and sort one array according to another. — masta Blasta <lists@...>

I have two arrays of objects that look something like this:

14 messages 2013/06/17

[#408276] Comparing objects — "Thom T." <lists@...>

How do I compare two objects in Ruby, considering only attributes

15 messages 2013/06/17

[#408307] getting the most out of Ruby — robin wood <lists@...>

I write a lot of scripts in Ruby, most are small simple things but some

13 messages 2013/06/18

[#408309] Creating ruby script exe — Rochit Sen <lists@...>

Hi All,

17 messages 2013/06/18

[#408357] Beginners problem with database and datamapper — cristian cristian <lists@...>

Hi all!

28 messages 2013/06/20

[#408437] How do I input a variable floating point number into Ruby Programs — "Michael P F." <lists@...>

I want to evaluate the following interactively:

10 messages 2013/06/23

[#408518] #!/usr/bin/env: No such file or directory — Todd Sterben <lists@...>

I am new to both linux and ruby. I am using Ubuntu and Ruby 1.9

17 messages 2013/06/27

[#408528] Designing a Cabinet class — Mike Vezzani <lists@...>

Hello all,

12 messages 2013/06/27

[#408561] Find elment in array of hashes — Rodrigo Lueneberg <lists@...>

array = {:id=>1, :price =>0.25} # index[0]

23 messages 2013/06/28

Re: getting the most out of Ruby

From: Stu <stu@...>
Date: 2013-06-19 21:40:03 UTC
List: ruby-talk #408344
On Tue, Jun 18, 2013 at 6:09 PM, robin wood <lists@ruby-forum.com> wrote:
Brandon W. wrote in post #1112804:
> Blocks, Lambdas, Closures, Metaprogramming, and Enumerables are the huge
> topics. Master them and you'll see a huge difference.

Got any resources you used to help get your head around all these?

I felt that the book "Meta-Programming Ruby" was very eye opening. It
explains the object model in the first 100 pages. I recommend it based on
what you've said. I rarely push books but that one seems to be written by
someone who thought through the pedagogical approach of Ruby paradigm with
everyone coming from different programming backgrounds.


On Wed, Jun 19, 2013 at 3:45 AM, Robert Klemme
<shortcutter@googlemail.com>wrote:

>
>
>
> On Wed, Jun 19, 2013 at 10:42 AM, Robert Klemme <
> shortcutter@googlemail.com> wrote:
>
>>
>>
>>
>> On Tue, Jun 18, 2013 at 9:59 PM, Brandon Weaver <keystonelemur@gmail.com>wrote:
>>
>>> The biggest jumping point for me is when I stopped trying to program
>>> Ruby like C# and started programming Ruby like Ruby.
>>>
>> :-)
>>
>>>  Coming from C land you have tendencies towards a lot of imperative
>>> techniques, and Ruby is not solely imperative. Learning the functional side
>>> of Ruby is essential to graduate into advanced topics.
>>>
>> I'd be careful labeling Ruby as "functional".  The only "functional"
>> about Ruby is that with lambda you can have anonymous functions which you
>> can pass around.  The core feature of funct
>>
>
>
> Sorry, somehow I hit the wrong button and GMail just sent off the email.
>  What I wanted to say:
>
> I'd be careful labeling Ruby as "functional".  The only "functional" about
> Ruby is that with lambda you can have anonymous functions which you can
> pass around and create higher order functions.  The core feature of
> functional programming for me was always functions without side effects.
>  And that is not part of Ruby.  Of course, you _can_ code lambdas without
> side effects - but the language does not enforce this.
>
> Kind regards
>
> robert
>
>
I agree with you. I am very careful with when I write statements like that
hence I said "style" as in functional style. I am very used to That lambda
is important though. It is essentially the primitive of functional
programming( i.e. everything can be build from combination of lambdas)
though it would be not very efficient and is something which may be
explained from a pure "theoretical language" it's neat to know. Some people
have ported base scheme implementations to ruby( as those guys port that
language to everything) with just the lambda (once again neat but not
really useful)... bus scheme I believe is one which is the main 7( or 9)
original lisp primitives in 40 lines of code.

Though from an analytical point of view it's refreshing when the language
creator explains his motivations when creating ruby:
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/179642
http://www.slideshare.net/yukihiro_matz/how-emacs-changed-my-life

There are some others besides lambda and eval in recent ruby releases such
as both callcc and curry. But lambda the ultimate for those who are into
language creation. I recall a higher order cons enumerators. But it wasn't
a pure cons (each_cons maybe). If we had cons we could create our own
literals and further car/cdr would simply be aliases to first and *rest of
the list which for the most part is basically an array with whitespace
instead of commas for delimitation.

~Stu

In This Thread