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seanhandley/redefine_method_behaviour.rb

Created October 23, 2022 20:34
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  1. seanhandley created this gist Oct 23, 2022.
    33 changes: 33 additions & 0 deletions redefine_method_behaviour.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,33 @@
    irb(main):001:1* def make_methods(&blk)
    irb(main):002:1* (1..100).each { |i| define_method("number_#{i}".to_sym) { blk.call(i) } }
    irb(main):003:0> end
    => :make_methods
    irb(main):004:0>
    irb(main):005:0> make_methods { |i| i }
    => 1..100
    irb(main):006:0>
    irb(main):007:0> puts number_2 # => 2
    2
    => nil
    irb(main):008:0> puts number_3 # => 3
    3
    => nil
    irb(main):009:0>
    irb(main):010:0> p method(:number_2).source_location
    ["(irb)", 2]
    => ["(irb)", 2]
    irb(main):011:0>
    irb(main):012:0> make_methods { |i| i * 2}
    => 1..100
    irb(main):013:0>
    irb(main):014:0> puts number_2 # => 4
    4
    => nil
    irb(main):015:0> puts number_3 # => 6
    6
    => nil
    irb(main):016:0>
    irb(main):017:0> p method(:number_2).source_location
    ["(irb)", 2]
    => ["(irb)", 2]
    irb(main):018:0>