Defined?, And, Or, and Not : defined « Method « Ruby

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Ruby » Method » defined   Defined?, And, Or, and Not defined? 1 # "expression"  defined? dummy # nil  defined? printf # "method"  defined? String # "constant"  defined? $_ # "globalvariable"  defined? Math::PI # "constant"  defined? a = 1 # "assignment"  defined? 42.abs # "method"    Related examples in the same category

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