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kenchan/bigdecimal.md

Created October 23, 2019 06:00
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bigdecimal.md 
irb(main):013:0> require 'bigdecimal'
=> false
irb(main):014:0> 10.times.inject(0.0) {|i, _| i + 0.1 }.to_i
=> 0
irb(main):015:0> 10.times.inject(BigDecimal("0.0")) {|i, _| i + BigDecimal("0.1") }.to_i
=> 1
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