What is the difference between lexical and dynamic scoping?
An example of an AI chatbot conversation about lexical vs dynamic scoping in programming languages.
Can you explain the difference between lexical and dynamic scoping?
Sure! Lexical scoping means that the scope of a variable is determined by its location in the source code, while dynamic scoping determines the scope based on the call stack at runtime.
Can you give me an example of each?
Of course! In lexical scoping, a variable defined in a function is only accessible within that function and its nested functions. In dynamic scoping, a variable can be accessed by any function that is called after it is defined, regardless of where it is defined.
Which programming languages use lexical scoping?
Languages like JavaScript, Python, and Java use lexical scoping. They determine variable scope based on the physical structure of the code.
And what about dynamic scoping?
Dynamic scoping is less common, but languages like Perl and some Lisp dialects use it, where the scope is determined at runtime.
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