Rubocop auto correct

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in uplot.gemspec

Rakefile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rake/testtask'
 

exe/uplot

@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'uplot'
 

lib/uplot.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'unicode_plot'
 require 'uplot/version'
 require 'uplot/preprocessing'

lib/uplot/command.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'preprocessing'
 require_relative 'command/parser'
 

lib/uplot/command/params.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Uplot
   class Command
     Params = Struct.new(

lib/uplot/command/parser.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'optparse'
 require_relative 'params'
 
@@ -211,7 +213,7 @@ module Uplot
 
         @command = argv.shift&.to_sym
 
-        unless sub_parsers.has_key?(command)
+        unless sub_parsers.key?(command)
           if command.nil?
             warn main_parser.help
           else
@@ -228,7 +230,6 @@ module Uplot
           exit 1
         end
       end
-
     end
   end
 end

lib/uplot/plot.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'unicode_plot'
 
 module Uplot

lib/uplot/preprocessing.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'csv'
 
 module Uplot

lib/uplot/version.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Uplot
-  VERSION = '0.2.3'.freeze
+  VERSION = '0.2.3'
 end

test/test_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'simplecov'
 SimpleCov.start
 

test/uplot/command_test.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../test_helper.rb'
 
 class UplotCommandTest < Test::Unit::TestCase

test/uplot/plot_test.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../test_helper.rb'
 
 class UplotPlotTest < Test::Unit::TestCase

test/uplot/preprocessing_test.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative '../test_helper.rb'
 
 class UplotPreprocessingTest < Test::Unit::TestCase

test/uplot_test.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'test_helper'
 
 class UplotTest < Test::Unit::TestCase

uplot.gemspec

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'lib/uplot/version'
 
 Gem::Specification.new do |spec|