Best Prolog Programming Guides to Buy in October 2025
Programming in Prolog: Using The Iso Standard
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Logic Programming with Prolog
Clause and Effect: Prolog Programming for the Working Programmer
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Prolog Programming for Artificial Intelligence
Learn Prolog Now! (Texts in Computing, Vol. 7)
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The Craft of Prolog (Logic Programming)
Prolog: The Standard: Reference Manual
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Micro-Prolog: Programming in Logic
The Practice of Prolog (Logic Programming)
To get the current system year in Prolog as a number, you can use the built-in predicate get_time/1 to get the current time in a format that includes the year. You can then use stamp_date_time/3 to convert the time into a date-time structure, and finally use date_time_value/3 to extract the year from the date-time structure as a number. Here is an example code snippet:
get_current_year(Year) :- get_time(Stamp), stamp_date_time(Stamp, DateTime, local), date_time_value(year, DateTime, Year).
You can call get_current_year(Year) to get the current system year as a number.
What is the use of Prolog in artificial intelligence?
Prolog is a high-level logic programming language that is commonly used in artificial intelligence applications. It is well-suited for tasks that involve reasoning, natural language processing, expert systems, and automated planning. Prolog is particularly useful for representing and reasoning about complex relationships and constraints, making it an ideal tool for solving problems in AI that require higher-order logical reasoning and inference capabilities. It allows developers to define rules and facts, which can be used to infer new knowledge based on existing information. Overall, Prolog can be used to create powerful AI systems that can perform tasks such as automated reasoning, knowledge representation, and decision-making.
What is the power operator in Prolog?
The power operator in Prolog is "**". It is used to perform exponentiation, raising the first argument to the power of the second argument. For example, 3 ** 2 would evaluate to 9.
What is logic programming in Prolog?
Logic programming in Prolog is a programming paradigm based on formal logic. In logic programming, computation is performed by making logical inferences based on a set of rules and facts. Prolog is a popular logic programming language that uses a formal system of deductive reasoning to solve problems. Prolog programs consist of a set of rules and facts that define relationships and properties, and queries can be made to the program to find solutions based on these rules and facts. The language is particularly well-suited for tasks such as symbolic reasoning, natural language processing, and expert systems.
What is the cut operator in Prolog?
The cut operator (!) in Prolog is used to control backtracking and search. When the cut operator is encountered during the execution of a query, it prevents Prolog from searching for alternative solutions and committing to the choices that have been made so far. This can help improve performance by avoiding unnecessary backtracking and can also be used to prune search trees in certain situations. However, the cut operator should be used with caution as it can make programs less flexible and harder to understand.