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Tell me what is the difference between ruby 1.9 and ruby 2.0?
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Answer / Sumant Kumar
Ruby 1.9 introduced many significant changes such as the addition of the BigDecimal library, a faster GC (garbage collector), better Unicode support, and improvements to the core libraries. Ruby 2.0 further optimized performance, added a new YARV (Yet Another Ruby VM) virtual machine, and removed some deprecated features.
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