Ruby file accepts from command prompt in the form of array.Passing parametersruby input.rb TOI DH TimesNewAccessing parameters # input.rb p ARGV # => ["TOI", "DH", "TimesNew"] p ARGV[0] # => "TOI" p ARGV[1] # => "DH"Optparser : parses commandline options in more effective way using OptParser class.and we can access options as hashed parameters.Passing parametersruby … Continue reading Passing commandline parameter (arguments) to ruby file using optparser
Category: Ruby
How to remove extra spaces in ruby strings
In ruby, one can write multiple codes to remove multiple blank spaces inside strings (sentenses) "Write your string here ".squeeze.strip"This is my input string ".gsub(/ +/, ' ')"Write your string … Continue reading How to remove extra spaces in ruby strings
Variables initialization, assignments and swapping in ruby
Just a single line variable swap in rubyx,y=y,xExample:irb>> x = "Fun"=> "Fun"irb>> y = "Rails"=> "Rails"irb>> x,y = y,x=> ["Rails", "Fun"]irb>> p x"Rails"=> nil>> p y"Fun"Variable assignments in Rubywe can do multiple assignments in a single line.irb>> a,b,c,d = 1,2,3,4=> [1, 2, 3, 4]here is interpretation of above lineirb>> p "a => #{a} b => #{b} … Continue reading Variables initialization, assignments and swapping in ruby
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