Training, Open Source Programming Languages

This is page

Our email: • Phone: 01144 1225 708225

For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
for and each loops over an array. Also sorting
Control Structures example from a Well House Consultants training course
More on Control Structures [link]

This example is described in the following article(s):
   • Process every member of an array, and sort an array - Ruby - [link]

Source code: collect Module: R104
# for and each loops over an array in Ruby. Also sorting

places = ["Whitby","Skeggy","Croatia","Maldives","Seaford","Whitby"]

# Iterate through each element
# ----------------------------

places.each do |holiday|
        puts "A great weekend in #{holiday}"

# default (natural order) sort

for place in places
        puts "Go to #{place} for a few days"

# ... or iterate through the position of each element
# ---------------------------------------------------

for posn in 0...places.length
        puts "Have a break in #{places[posn]}"

# sort, with a specified comparator block
places.sort! {|left,right| left.length <=> right.length}

# ... or process the whole array (map or collect)
# -----------------------------------------------

puts places.collect {|place| "Sand and sea in #{place}"}

places.collect! {|place| "Nightlife at #{place}"}
puts places


munchkin:chruby grahamellis$ ruby collect
A great weekend in Whitby
A great weekend in Skeggy
A great weekend in Croatia
A great weekend in Maldives
A great weekend in Seaford
A great weekend in Whitby
A great weekend in Wiltshire
A great weekend in Florida
A great weekend in Gainsborough
Go to Croatia for a few days
Go to Florida for a few days
Go to Gainsborough for a few days
Go to Maldives for a few days
Go to Seaford for a few days
Go to Skeggy for a few days
Go to Whitby for a few days
Go to Whitby for a few days
Go to Wiltshire for a few days
Have a break in Croatia
Have a break in Florida
Have a break in Gainsborough
Have a break in Maldives
Have a break in Seaford
Have a break in Skeggy
Have a break in Whitby
Have a break in Whitby
Have a break in Wiltshire
Sand and sea in Skeggy
Sand and sea in Whitby
Sand and sea in Whitby
Sand and sea in Florida
Sand and sea in Croatia
Sand and sea in Seaford
Sand and sea in Maldives
Sand and sea in Wiltshire
Sand and sea in Gainsborough
Nightlife at Skeggy
Nightlife at Whitby
Nightlife at Whitby
Nightlife at Florida
Nightlife at Croatia
Nightlife at Seaford
Nightlife at Maldives
Nightlife at Wiltshire
Nightlife at Gainsborough
munchkin:chruby 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

Books covering this topic
Yes. We have over 700 books in our library. Books covering Ruby are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

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

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

Web site author
This web site is written and maintained by Well House Consultants.

Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

Conditions of use
Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.

This program is copyright Well House Consultants Ltd. You are forbidden from using it for running your own training courses without our prior written permission. See our page on courseware provision for more details.

Any of our images within this code may NOT be reused on a public URL without our prior permission. For Bona Fide personal use, we will often grant you permission provided that you provide a link back. Commercial use on a website will incur a license fee for each image used - details on request.

© WELL HOUSE CONSULTANTS LTD., 2022: 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • EMAIL: • WEB: • SKYPE: wellho

PAGE: • PAGE BUILT: Sun Oct 11 14:50:09 2020 • BUILD SYSTEM: JelliaJamb