> Common Lisp lacks some conveniences that have become common in newer languages, such as concise literals for a wider variety of data structures, persistent immutable collections, lazy sequences and built-in general-purpose pattern matching.

we can explore libraries on https://github.com/CodyReichert/awesome-cl/

concise literals: serapeum's dict or other libraries bring you { } for hash tables and the like.

persistent collections: FSet (and more)

lazy sequences: series, gtwiwtg (generators) (and more)

pattern-matching: Trivia

many libraries are shipped in CIEL: https://ciel-lang.org/ (shameless plug)

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> It’s currently used in …

more example companies: https://github.com/azzamsa/awesome-lisp-companies/

also: https://lisp-screenshots.org/

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> at the cost of slightly slower startup times

that means ±30ms, not the Java-esque slow startup time ;)

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editors: don't miss https://lispcookbook.github.io/cl-cookbook/editor-support.ht... and the new Mine, OLIVE for VSCode, ICL repl (terminal and browser).