What are programming languages with dynamic scope?

What are programming languages with dynamic scope?

Dynamic scoping is a method of variable scope resolution where a variable's value is determined by the call stack at runtime. Some programming languages that use dynamic scoping include Perl, Bash, and some versions of Lisp.

Can you explain how dynamic scoping works in these languages?

Sure! In dynamic scoping, when a function is called, it can access variables from the calling context, not just its own local variables. This means that if a variable is defined in a calling function, the called function can use it.

What are the advantages and disadvantages of dynamic scoping?

Advantages include flexibility and ease of use in certain scenarios. Disadvantages are potential confusion and difficulty in debugging, as it can be harder to track variable values.

Are there any popular languages that use static scoping instead?

Yes, many popular languages like Java, C, and Python use static scoping, where the scope of a variable is determined at compile time.