[#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: Unexpected output piping to ruby -pe ''

From: Robert Klemme <shortcutter@...>
Date: 2013-06-14 11:11:03 UTC
List: ruby-talk #408226
On Fri, Jun 14, 2013 at 1:14 AM, Eric Christopherson <
echristopherson@gmail.com> wrote:

> On Thu, Jun 13, 2013 at 4:49 PM, Greg Ferguson <lists@ruby-forum.com>wrote:
>
>> How come Ruby outputs the incoming piped text when there is no code to
>> evaluate:
>>
>>     echo foo | ruby -pe ''
>>
>> outputs: "foo"
>>
>> Without "-p" there's no output, which I'd expect. Without '' there's an
>> error, which I'd expect when using the "-e" flag.
>>
>> Is there a silent return value of the incoming text that "-p" is then
>> printing?
>>
>
> Not a return value.
>
> From `ruby --help`:
>   -n              assume 'while gets(); ... end' loop around your script
>   -p              assume loop like -n but print line also like sed
>
> So it creates a loop around the (empty) expression; the loop keeps getting
> the next line from stdin until EOF; and it prints the line. (Actually I
> believe the line printed is the special variable $_, which gets writes to
> implicitly. In an actual useful one-liner you would probably filter out
> certain lines and/or run sub or gsub -- when invoked as Kernel methods,
> these  also implicitly write to $_.)
>

Btw, that's what other tools do as well:

$ seq 1 5 | sed -e ''
1
2
3
4
5

Kind regards

robert

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

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