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File -> Objects -> Analysis
Classes and Objects example from a Well House Consultants training course
More on Classes and Objects [link]

This example is described in the following article(s):
   • Ruby off the Rails? - [link]

Source code: thirdrail Module: R105
# 5879 CHR BH23 1PL SZ 152933 50.7382003754 -1.784549578
# Christchurch 356637 357361 357013 368081 401544 392088

# File -> Objects -> Analysis

class Station
        def initialize(record_text)
                 @fdc, @tlc, @postcode, @gridref,
                 @lati, @longi, @name, @t2005,
                 @t2006, @t2007, @t2008,
                 @t2009, @t2010 = record_text.chomp.split "\t"
        def getgrowth
                return 1.0 if @t2005 == "NULL" or @t2010 == "NULL"
                @t2010.to_f / @t2005.to_f
        def getname
                return @name


# ----------------------------------------------------------

fh = File.new "railstats.xyz"
stns = []

# create an array of station objects - 2537 or them!

while (lyne = fh.gets)
        stns.push Station.new(lyne)

# get the growth for each station. If between 4.5 and 5, report it

for place in stns
        growth = place.getgrowth
        if growth > 4.5 and growth < 5.0
                puts "Growth #{growth} at #{place.getname}"


munchkin:rs grahamellis$ ruby thirdrail
Growth 4.84424038039829 at Bradford Forster Square
Growth 4.69588971475764 at London Fields
Growth 4.88378896251115 at Hackney Wick
Growth 4.62891340332681 at Maghull
Growth 4.91176855609373 at South Tottenham
Growth 4.60778231652162 at West Hampstead Thameslink
Growth 4.72221717401181 at Brondesbury Park
Growth 4.725 at Havenhouse
Growth 4.97251091015432 at Ore
Growth 4.64773309666371 at Worcester Foregate Street
munchkin:rs grahamellis$

Learn about this subject
This module and example are covered on the following public courses:
 * Learning to program in Ruby
 * Ruby Programming
Also available on on site courses for larger groups

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Other Examples
This example comes from our "Classes and Objects" training module. You'll find a description of the topic and some other closely related examples on the "Classes and Objects" module index page.

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