There are some languages with books that remain relevant over decades, notably books for any Lisp - Common Lisp, Scheme, Clojure, also: - C (post-ANSI) - funda

There are some languages with books that remain relevant over decades, notably books for any Lisp - Common Lisp, Scheme, Clojure, also: - C (post-ANSI) - fundamentals largely unchanged since 1989 - SQL and Erlang - basic concepts stable since 1980s - Prolog and Forth - core concepts stable since 1970s Although modern books might cover some improved practices or new tooling, older texts on core concepts remain valuable.