Bindings

You can use eval to run code from a string, but things are not as simple as they seem. The eval method executes code, but where in the program is that code executed? The context in which code is executed is called a binding. Code is bound to a context of instance variable, local variables, and global variables. If you were to reference the variable x, it's up to the binding to decide which variable named x you're referring to.

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