Explain Prolog text representations and conversions for SWI-Prolog.
npx skills add https://github.com/hafley66/claude-research --skill prolog-strings
Please help me install this Agent Skill. Skill: prolog-strings Source: https://github.com/hafley66/claude-research/tree/main/skills/prolog-strings Command: npx skills add https://github.com/hafley66/claude-research --skill prolog-strings
Prolog developers often struggle with understanding and converting between the multiple text representations in Prolog (atoms, strings, character lists, and code lists), which can lead to bugs and confusion in text processing tasks.
Explain how to convert between atoms, strings, and code lists in SWI-Prolog and demonstrate atom_string/2 and string_to_atom/2.
High-intent search queries and answers about installing and using this skill.
This Skill clarifies the four Prolog text representations: atoms, strings, char lists, and code lists. It explains how the global double_quotes flag changes their meaning to prevent bugs in text processing.
The double_quotes flag changes how SWI-Prolog interprets quoted text, switching between strings, character lists, and code lists. Configuring it correctly ensures your text processing code parses data as intended.
Definite Clause Grammar (DCG) parsing in Prolog requires correctly handling text representations like code lists and atoms. Using reversible predicates ensures your DCG rules can both parse and generate text accurately.
Using format/2 for text output in SWI-Prolog requires understanding how atoms and strings interact with format specifiers. Correct usage ensures properly formatted output without representation mismatch errors.
Prolog text predicates fail when comparing strings and atoms because they are distinct types. You must convert them to a common representation using atom_string/2 or string_to_atom/2 before comparison.
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