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Explain me what is the difference between symbol and string?
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{"symbol": "A Symbol in Ruby is an object that represents a unique string value. It uses less memory since it shares the same value for identical symbols (e.g., :symbol_name).","string": "A String in Ruby is a sequence of characters enclosed in single quotes (`'`) or double quotes (`"`). Strings can be concatenated, sliced, and manipulated with various methods."
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