prolog-terms

You inspect and manipulate Prolog term structure using core predicates like functor/3, arg/3, and =../2. These built-in tools allow you to deconstruct compound terms, extract arguments by position, and dynamically build new terms for meta-programming tasks.

In Prolog term taxonomy, atoms and numbers are simple, non-decomposable data types, while compound terms consist of a functor name and a fixed arity containing nested sub-terms. Variables act as placeholders, enabling unification and pattern matching across these structures.

The =.. (univ) operator converts between a compound term and a Prolog list containing its functor and arguments. You use it to dynamically build goals from list elements or break down an existing term into a list for structural transformation and analysis.

Use copy_term in Prolog meta-programming when you need to duplicate a term containing variables while keeping the new variables independent from the original. This prevents unintended variable sharing during dynamic goal construction and term-based data representation transformations.

Yes, you can use functor/3 to dynamically create a term with a specific name and arity, and arg/3 to access or assign specific argument positions within that term. This combination is fundamental for generating dynamic goals and manipulating term-based data representations.

When using Prolog terms for data representation, you must manually manage functor arity and argument positions without compile-time type safety. Additionally, complex term manipulation requires careful handling of shared variables to avoid unintended unification side effects during structural transformations.