What are some examples of dynamic scope in programming?

What are some examples of dynamic scope in programming?

Dynamic scope refers to a variable's accessibility based on the call stack at runtime. A common example is in languages like Perl or JavaScript, where a variable can be accessed by functions that are called within the context of another function.

Can you give me a specific code example?

Sure! In JavaScript, if you define a variable in a function and call another function inside it, the inner function can access that variable if it's defined in the outer function's scope.

What about languages that don't support dynamic scope?

Languages like Java and C# use static scope, meaning variables are only accessible within the block they are defined. They don't allow access to variables in the calling function's scope.

How does dynamic scope affect debugging?

Dynamic scope can make debugging more challenging because the variable's value can change based on the call stack, making it harder to track where a variable was modified.