Le ultime parole famose

“Computers in the future may weigh no more than 1.5 tons.” –Popular Mechanics, forecasting the relentless march of science, 1949

“I think there is a world market for maybe five computers.” –Thomas Watson, Chairman of IBM, 1943

“I have traveled the length and breadth of this country and talked with the best people, and I can assure you that data processing is a fad that won’t last out the year.” –The editor in charge of business books for Prentice Hall, 1957

“But what … is it good for?” –Engineer at the Advanced Computing Systems Division of IBM, 1968, commenting on the microchip.

“There is no reason anyone would want a computer in their home.” –Ken Olson, president, chairman and founder of Digital Equipment Corp., 1977

“This ‘telephone’ has too many shortcomings to be seriously considered as a means of communication. The device is inherently of no value to us.” –Western Union internal memo, 1876.

“The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?” –David Sarnoff’s associates in response to his urgings for investment in the radio in the 1920s.

“The concept is interesting and well-formed, but in order to earn better than a ‘C,’ the idea must be feasible.” –A Yale University management professor in response to Fred Smith’s paper proposing reliable overnight delivery service. (Smith went on to found Federal Express Corp.)

“Who the hell wants to hear actors talk?” –H.M. Warner, Warner Brothers, 1927.

Creiamo un’applicazione web con Rails - Introduzione

Oggi vorrei cominciare una serie di articoli che hanno lo scopo di prendere dimestichezza con il linguaggio di programmazione Ruby ed in particolare con il framework Rails, mediante la realizzazione di un’applicazione per la gestione di un magazzino, che utilizza come backend un database MySQL (che supponiamo sia già installato e funzionante).

L’applicazione dovrà gestire non solo i prodotti e i fornitori, ma anche le assegnazioni di materiale, le assistenze (interne ed esterne) ed il software caricato sulle macchine.

Capitolo 1: Installazione

Ovviamente la prima cosa da fare è installare l’interprete ruby.

sudo apt-get install ruby rdoc irb libyaml-ruby libzlib-ruby ri libopenssl-ruby

Installiamo, poi, RubyGems dai sorgenti

wget http://rubyforge.org/frs/download.php/29548/rubygems-1.0.1.tgz
tar xzvf rubygems-1.0.1.tgz
cd rubygems-1.0.1
sudo ruby setup.rb
sudo gem update –system