Ruby Files 2020

The Enumerable mixin provides collection classes with several traversal and searching methods, and with the ability to sort. The class must provide a method each, which yields successive members of the collection.

The following example shows the use of enumerable:

#!/usr/bin/ruby
# fl.rb

file = File.new("particles.out","w")

file.puts "Quarks"
file.puts "Leptons"
file.puts "Gluons"
file.puts "Photon"
file.puts "Z Boson"
file.close
puts File.read("particles.out")
puts

file = File.new("particles.out","a")
file.puts "W Boson"
file.puts "Higgs"
file.close
puts File.read("particles.out")

Output:

Quarks
Leptons
Gluons
Photon
Z Boson

Quarks
Leptons
Gluons
Photon
Z Boson
W Boson
Higgs

We'll read files, and looping through each line. Then, we split the line with ', and put each item into an output as variables.

#!/usr/bin/ruby
# fl2.rb

file = File.new("particles_info.out","w")

file.puts "Quarks,2,3,pair,3,36"
file.puts "Leptons,2,3,pair,None,12"
file.puts "Gluons,1,1,own,8,8"
file.puts "Photon,1,1,own,None,1"
file.puts "Z Boson,1,1,own,None,1"
file.puts "W Boson,1,1,pair,None,2"
file.puts "Higgs,1,1,own,None,1"
file.close

puts File.read("particles_info.out")
puts

File.open("particles_info.out") do |record|
   record.each do |item|
       name, types, generations, antiparticle, colors, total = item.split(',')
       puts "Particle #{name} is type of #{types}. It has #{generations} generations, #{antiparticle} antiparticles with #{colors}. Totals = #{total}"
   end
end

Output:

Quarks,2,3,pair,3,36
Leptons,2,3,pair,None,12
Gluons,1,1,own,8,8
Photon,1,1,own,None,1
Z Boson,1,1,own,None,1
W Boson,1,1,pair,None,2
Higgs,1,1,own,None,1

Particle Quarks is type of 2. It has 3 generations, pair antiparticles with 3. Totals = 36
Particle Leptons is type of 2. It has 3 generations, pair antiparticles with None. Totals = 12
Particle Gluons is type of 1. It has 1 generations, own antiparticles with 8. Totals = 8
Particle Photon is type of 1. It has 1 generations, own antiparticles with None. Totals = 1
Particle Z Boson is type of 1. It has 1 generations, own antiparticles with None. Totals = 1
Particle W Boson is type of 1. It has 1 generations, pair antiparticles with None. Totals = 2
Particle Higgs is type of 1. It has 1 generations, own antiparticles with None. Totals = 1

Ruby on Rails

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