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- irb(main):012:0> blah
- => "apple"
- irb(main):013:0> blah.is_a?(Numeric)
- => false
- irb(main):014:0> blah.to_i
- => 0
- irb(main):015:0> blah = "1"
- => "1"
- irb(main):016:0> blah.is_a?(Numeric)
- irb(main):017:0> blah.to_i
- => 1
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