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September 3, 2014 18:31
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,304 @@ misterkak@misterkak-900X4D:~$ pry [1] pry(main)> print "enter your name: " enter your name: => nil [2] pry(main)> name = gets.chomp mike => "mike" [3] pry(main)> puts name mike => nil [4] pry(main)> quit misterkak@misterkak-900X4D:~$ clear misterkak@misterkak-900X4D:~/work/ruby$ ruby example.rb Enter your name: mike!!! Hello, mike!!! misterkak@misterkak-900X4D:~/work/ruby$ pry [1] pry(main)> def say_hi(name) [1] pry(main)* puts "Hi #{name}" [1] pry(main)* end => nil [2] pry(main)> say_hi "Mike" Hi Mike => nil [3] pry(main)> methods => [:to_s, :public, :private, :include, :pry, :__binding__, :pretty_print, :pretty_print_cycle, :pretty_print_instance_variables, :pretty_print_inspect, :nil?, :===, :=~, :!~, :eql?, :hash, :<=>, :class, :singleton_class, :clone, :dup, :initialize_dup, :initialize_clone, :taint, :tainted?, :untaint, :untrust, :untrusted?, [4] pry(main)> str = "string!" => "string!" [5] pry(main)> str2 = str! NoMethodError: undefined method `str!' for main:Object from (pry):7:in `__pry__' [6] pry(main)> str! = str SyntaxError: unexpected '=' str! = str ^ [6] pry(main)> str! == str NoMethodError: undefined method `str!' for main:Object from (pry):8:in `__pry__' [7] pry(main)> str => "string!" [8] pry(main)> str.inspect => "\"string!\"" [9] pry(main)> arr = [1,2,3,8,4] => [1, 2, 3, 8, 4] [10] pry(main)> arr = arr.sort! => [1, 2, 3, 4, 8] [11] pry(main)> arr.methods => [:inspect, :to_s, :to_a, :to_ary, :frozen?, :==, :eql?, :hash, :[], :[]=, :at, :fetch, :first, :last, :concat, :<<, :push, :pop, :shift, :unshift, :insert, :each, :each_index, :reverse_each, :length, :size, :empty?, :find_index, :index, :rindex, :join, :reverse, :reverse!, :rotate, :rotate!, :sort, :sort!, :sort_by!, :collect, :collect!, :map, :map!, :select, :select!, :keep_if, :values_at, :delete, :delete_at, :delete_if, :reject, :reject!, :zip, :transpose, :replace, :clear, :fill, :include?, :<=>, :slice, :slice!, :assoc, :rassoc, :+, :*, :-, :&, :|, :uniq, :uniq!, :compact, :compact!, :flatten, :flatten!, :count, :shuffle!, :shuffle, :sample, :cycle, :permutation, :combination, :repeated_permutation, :repeated_combination, :product, :take, :take_while, :drop, :drop_while, :pack, :pretty_print, :pretty_print_cycle, :shelljoin, :entries, :sort_by, :grep, :find, :detect, :find_all, :flat_map, :collect_concat, :inject, :reduce, :partition, :group_by, :all?, :any?, :one?, :none?, :min, :max, :minmax, :min_by, :max_by, :minmax_by, :member?, :each_with_index, :each_entry, :each_slice, :each_cons, :each_with_object, :chunk, :slice_before, :pry, :__binding__, :pretty_print_instance_variables, :pretty_print_inspect, :nil?, :===, :=~, :!~, :class, :singleton_class, :clone, :dup, :initialize_dup, :initialize_clone, :taint, :tainted?, :untaint, :untrust, :untrusted?, :trust, :freeze, :methods, :singleton_methods, :protected_methods, :private_methods, :public_methods, :instance_variables, :instance_variable_get, :instance_variable_set, :instance_variable_defined?, :instance_of?, :kind_of?, :is_a?, :tap, :send, :public_send, :respond_to?, :respond_to_missing?, :extend, :display, :method, :public_method, :define_singleton_method, :object_id, :to_enum, :enum_for, :pretty_inspect, :equal?, :!, :!=, :instance_eval, :instance_exec, :__send__, :__id__] [12] pry(main)> str.each NoMethodError: undefined method `each' for "string!":String from (pry):14:in `__pry__' [13] pry(main)> arr.each => #<Enumerator: ...> [14] pry(main)> arr.each { |x| puts x } 1 2 3 4 8 => [1, 2, 3, 4, 8] [15] pry(main)> arr => [1, 2, 3, 4, 8] [16] pry(main)> arr.each => #<Enumerator: ...> [17] pry(main)> { |x| puts x } SyntaxError: unexpected tIDENTIFIER, expecting keyword_do or '{' or '(' { |x| puts x } ^ [17] pry(main)> arr.each => #<Enumerator: ...> [18] pry(main)> do { SyntaxError: unexpected keyword_do_block, expecting $end [18] pry(main)> names = { "mike" => 1, "rob" => 2, "kak" => "sur" } => {"mike"=>1, "rob"=>2, "kak"=>"sur"} [19] pry(main)> names.each { |x| puts x } mike 1 rob 2 kak sur => {"mike"=>1, "rob"=>2, "kak"=>"sur"} [20] pry(main)> names.mike NoMethodError: undefined method `mike' for {"mike"=>1, "rob"=>2, "kak"=>"sur"}:Hash from (pry):22:in `__pry__' [21] pry(main)> puts names["mike"] 1 => nil [22] pry(main)> names[:mike] => nil [23] pry(main)> Math.sqrt(1282) => 35.805027579936315 [24] pry(main)> Time.now => 2014-09-03 11:23:03 -0700 [25] pry(main)> Array.new(10, 'bee') => ["bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee", "bee"] [26] pry(main)> include Math => Object [27] pry(main)> sqrt (64) => 8.0 [28] pry(main)> sqrt 64 => 8.0 [29] pry(main)> names.inspect => "{\"mike\"=>1, \"rob\"=>2, \"kak\"=>\"sur\"}" [30] pry(main)>