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| '''3e eval() in dynamic languages'''
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| The eval facility is one of the most powerful features of Ruby (as well as other dynamic languages).
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| Kernel.eval method will parse and execute an arbitrary string of legal Ruby source code.
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| To put it plainly, if your Ruby program can generate a string of valid Ruby code,
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| the Kernel.eval method can evaluate that code. The eval facility gives developers the ability to
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| modify the runtime behavior of program. Illustrate the practical advantages of Ruby's eval(...)
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| and compare it with similar mechanisms in other languages.
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