[#400858] Support for multiple Inheritance by classes — Ross Konsolebox <lists@...>

Will Ruby ever support multiple inheritance through classes instead of

23 messages 2012/11/03
[#400859] Re: Support for multiple Inheritance by classes — Arlen Cuss <ar@...> 2012/11/03

I think I can say "no" with a fair amount of confidence.

[#400902] Re: Support for multiple Inheritance by classes — Ross Konsolebox <lists@...> 2012/11/04

Arlen Cuss wrote in post #1082618:

[#400904] Re: Support for multiple Inheritance by classes — Peter Hickman <peterhickman386@...> 2012/11/04

Even though other languages handle multiple inheritance without any

[#400865] why does UnboundMethod need to remember the class it was retrieved from (not merely owner)? — "Mean L." <lists@...>

class Base; def foo; end end

17 messages 2012/11/03

[#400914] login web page using mechanize — john smith <lists@...>

new to ruby, love the language. read programmatic programmers guide to

25 messages 2012/11/04

[#400985] How to merge two or more hashes in to one? — "Jermaine O." <lists@...>

Hi everyone.

14 messages 2012/11/06

[#401026] Site down watir-webdriver — ajay paswan <lists@...>

Whenever a site is down it keeps on looking for it for sometime and

14 messages 2012/11/07

[#401027] Closing popups watir-webdriver — ajay paswan <lists@...>

Sometimes popup comes when a link is clicked, sometimes popup comes when

14 messages 2012/11/07

[#401125] Complete newbie — "Carlos A." <lists@...>

Hey guys!

14 messages 2012/11/10

[#401161] Convert date to string — Ferdous ara <lists@...>

Hi

12 messages 2012/11/11

[#401173] question on watir — Raj pal <lists@...>

I am automating Idit application using Ruby, at one screen I can't feed

233 messages 2012/11/12

[#401191] Extending Array instances — Charles Hixson <charleshixsn@...>

I'm trying to figure out a good way to extend an Array, when the items

17 messages 2012/11/12
[#401195] Re: Extending Array instances — Brian Candler <lists@...> 2012/11/12

Charles Hixson wrote in post #1084111:

[#401200] Efficient way for comparing records between 2 large files (16 million records) — Ruby Student <ruby.student@...>

Team,

9 messages 2012/11/12

[#401274] following along with "Beginning Ruby." — Al Baker <lists@...>

I'm having trouble following along with some of the examples in this

15 messages 2012/11/15

[#401279] Question on exceptions — Justin Gamble <lists@...>

Hello! I have a simple bank program where I have to have an exception

16 messages 2012/11/15
[#401281] Re: Question on exceptions — Justin Gamble <lists@...> 2012/11/15

What is the reason of doing the .new(...)in

[#401295] Re: Question on exceptions — Brian Candler <lists@...> 2012/11/16

Justin Gamble wrote in post #1084635:

[#401296] Re: Question on exceptions — tamouse mailing lists <tamouse.lists@...> 2012/11/16

On Fri, Nov 16, 2012 at 1:43 AM, Brian Candler <lists@ruby-forum.com> wrote:

[#401301] Alternatives to methods for large number of nested "ifs" — Philip Rhoades <phil@...>

People,

11 messages 2012/11/16

[#401336] Advice for simple client/server application — Panagiotis Atmatzidis <atma@...>

Hello,

12 messages 2012/11/17

[#401364] Metaprogramming — "Aurimas N." <lists@...>

Hello,

12 messages 2012/11/19

[#401404] "undefined method `synchronize' for #<Mutex:0xa0f5adc>" from embedded Ruby program — Graham Menhennitt <graham@...>

I'm writing a C++ program (on Centos 5 Linux) that embeds a Ruby 1.9.3

9 messages 2012/11/21

[#401422] how to increase variable inside the while loop — Ferdous ara <lists@...>

Hi, my question might be confusing as its hard for me to make it clear,

12 messages 2012/11/21

[#401451] Arrays with records as objects — Steve Tucknott <lists@...>

I am completely new to Ruby.

11 messages 2012/11/22

[#401458] working with mysql in ruby — john smith <lists@...>

i have been trying to successfully connect ruby with mysql. there are a

17 messages 2012/11/22

[#401567] click on link not working with ie #watir-webdriver — ajay paswan <lists@...>

Greetings,

12 messages 2012/11/26

[#401578] atomic statements in multithreading — ajay paswan <lists@...>

suppose I am working in multiple thread each thread runs following

10 messages 2012/11/26

[#401607] Novice: Understanding instance 'variables' and methods — Steve Tucknott <lists@...>

A question - or comment - on instance variables.

10 messages 2012/11/26

[#401644] Getting the smallest Items of an Array — "Ismail M." <lists@...>

Hello guys,

14 messages 2012/11/27

[#401655] gem problems(sigh) — Al Baker <lists@...>

i tried to make a gem and tried to build the spec file and this is what

10 messages 2012/11/28

[#401688] sorting data from a file — "Ismail M." <lists@...>

Hey guys,

16 messages 2012/11/28

[#401706] Newbie question: (free) on-line courses? — Ken D'Ambrosio <ken@...>

Hello, all. There's a bunch of free on-line training for Javascript,

11 messages 2012/11/28

Re: Efficient way for comparing records between 2 large files (16 million records)

From: Panagiotis Atmatzidis <atma@...>
Date: 2012-11-14 15:53:07 UTC
List: ruby-talk #401254
Hello,

On 12 =CE=9D=CE=BF=CE=B5 2012, at 23:21 , Ruby Student =
<ruby.student@gmail.com> wrote:

> Team,
>=20
> I have two large files, about 16 million records each.
> The files are sorted.
> The first 13 characters are used as a key.
> We get an updated file every week.
> We also keep the previous week file.
>=20
> I need to compare the keys from the new file to the keys on the file =
from last week. If the rest of the records are the same, then I do =
nothing. If the keys matches but the rest of the records are different, =
I then have an update and I will output that record to a new file.
> I was wondering if there is an efficient way to do this in Ruby. =
Either any built-in method or an efficient algorithm which I can =
implement.

Not sure if you dealing with hashes or arrays but take a look at the '-' =
method for arrays, it's blazing fast for comparing even large arrays.

>=20
> Thank you
>=20
>=20
> --=20
> Ruby Student


Panagiotis (atmosx) Atmatzidis

email:	atma@convalesco.org
URL:	http://www.convalesco.org
GnuPG ID: 0xE736C6A0
gpg --keyserver x-hkp://pgp.mit.edu --recv-keys 0xE736C6A0
--
The wise man said: "Never argue with an idiot. They bring you down to =
their level and beat you with experience."



In This Thread