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In today's article, we'll be looking at the concept of variables in Swift. In any programming language, a programmer learns about variables in the initial days of learning that language. A variable refers to a storage location we reserve in the computer’s memory for some data or value to store that we can change freely & manipulate as per our program's requirements. To declare a variable, we use the `var` keyword, followed by the name we want to give to that particular variable, and assign it to something we want this particular variable to store in the memory.