Pass by Value vs Pass by Reference

Pass by Value means the called function’s parameter will be a copy of the caller’s passed argument. When parameter is passed to a function, it’s fully evaluated and a new copy of the value (result) is made in function’s scope.

Pass by Reference means the called function’s parameter will be the same as the caller’s passed argument (not the value, but the identity — the variable itself). When parameter is passed to a function, only the reference of the variable is passed.

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@iSikanderShaikh

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