Scribble is a dialect of Racket that inverts the ordi­nary rela­tion­ship of plain text and code: rather than embed­ding text strings within source, a Scribble docu­ment consists of code expres­sions embedded within plain text. Extensible IDE bundled, Emacs, Vim and VSCode, Multi-paradigm: functional, imperative, logic, meta, modular, object-oriented, reflective. I said above that Lisp flat­tery is easy to find. X-expres­sions. If you think I sound like a fanboy or cult member, I can live with that. Why should I start? Why do Lisps have such a great repu­ta­tion, yet few users? It is easy to recover from errors. used - What are the differences between Clojure, Scheme/Racket and Common Lisp? (Details.). In a language like Python, the list is one data type within the language. Every­thing is an expres­sion. Then you notice pack­ages you maybe didn’t expect: GUI appli­ca­tion frame­work, math plot­ting, package-distri­bu­tion system, unit tester. Create new program­ming languages. (In Lisps, they’re some­times called atoms.) Dr­Racket. Racket is a descen­dant of Scheme, which in turn is a descen­dant of Lisp. But these arti­cles are also emblem­atic of a general weak­ness of messaging about Lisp. You can use any of these languages within Dr­Racket to code new projects. So yes, you can use the list as a data type. Well, not “special” in a Lispy sense—keeping with the usual policy, an X-expres­sion is just another list—but special in the sense that other program­ming languages don’t have it. But I can tell you what the view looks like so far. But for someone new to Lisp languages, they’re not neces­sarily a bread-and-butter benefit. You can use this facility to make special­ized dialects of Racket. To find out, I read what­ever I could find about Lisps, including Paul Graham’s Hackers & Painters and Peter Seibel’s Prac­tical Common Lisp. Returns the least common multiple (a non-negative number) of the n s; non-integer n s, the result is the absolute value of the product divided by the gcd.If no arguments are provided, the result is 1.If any argument is zero, the result is zero; furthermore, if any argument is exact 0, the result is exact 0. What are the best general-purpose programming languages? While it doesn’t have the type­set­ting facil­i­ties of La­TeX, the program­ming facil­i­ties are much better. You get the essen­tials, of course: web server, JSON, XML, drawing, foreign-func­tion inter­face, and so on. (If you find this idea weird and scary, this is a good moment to bail out.). This ends up being more flex­ible & more fun. Scribble, by contrast, lets you invoke any Racket code simply by adding a command char­acter to the front. The point is not that you’d neces­sarily want to do this, but that Lisps permit it. Every expres­sion is either a single value or a list. They can handle Common Lisp-style macros, but also more elab­o­rate syntax rearrange­ments. Racket is a de­scen­dant of Scheme, which in turn is a de­scen­dant of Lisp.. An up­dated ver­sion of this piece is part of Beau­ti­ful Racket, my book about mak­ing pro­gram­ming lan­guages with Racket. Here’s my ranking of the language features that offered the most imme­diate value to me, when I was a programmer new to the Lisp world. So there are a ton of (). Firstly understand that Racket and Clojure are both in the Lisp family but were created and developed for very different reasons.  + Paul Graham’s program­ming language Arc, a dialect of Lisp, was built on top of Racket. Almost all aspects of the language are designed with interactive/repl use in mind. Why Racket? Do racket macros have more advanced functionality than those found in Scheme or Common Lisp? The program grows and evolves more smoothly because it’s easy to change one part without causing ripple effects else­where. Ask Question Asked 7 years, 6 months ago. Func­tional program­ming. Why would you take them away?” Because they’re false friends. (The sequel to this piece—Why language-oriented program­ming? If you’ve ridden a motor­cycle, then you know what I mean. So it is with an expres­sion-based language. (This is also why Lisps have tradi­tion­ally excelled for proto­types and exploratory work.). The theory of compu­ta­tion is just one of many great scien­tific discov­eries in the last 100 years. That’s asking too much. “We knew Lisp was a really good language for writing soft­ware quickly.” Because of what char­ac­ter­is­tics? Here, you can start to see why this is so. What are the best Meta-programming languages? Lists are every­where.  + The fancy CS term for this prop­erty is homoiconicity. Unlike some­thing like the C preprocessor, which is basi­cally a sepa­rate mini-language, Racket macros are them­selves Racket func­tions that give you access to every­thing in Racket. In prac­tical program­ming projects, Lisps are rare. Lisp languages are immensely flex­ible and permis­sive in how their pieces can be connected. Lisps were the first languages to support FP. SLIME (Superior Lisp Interaction Mode for Emacs). What I didn’t find were simple, persua­sive argu­ments in its favor. Dr­Racket lets you edit, run, and debug Racket source files (or any other language based on Racket—see item #9 on this list.). It also expands your possi­bil­i­ties, because you can combine parts of the language in unusual ways if you feel like it. In fact, if you try it and don’t like it, I invite you to contact me, because I’m always curious to hear dissenting opin­ions. If you find this idea exciting, congrat­u­la­tions—you might be a Lisp programmer. What are the best languages to learn for someone coming from Python? If you have a better idea, they’ll listen; if you code it up to their stan­dards and make a pull request, they’ll take it. What are the best scheme implementations? Racket vs Scheme macros. Because in Python, a stan­dard if condi­tional is a state­ment, and can only be used in certain posi­tions. Seibel describes Lisp as a tool for getting “more done, faster”. If Lisp languages are so great, then it should be possible to summa­rize their bene­fits in concise, prac­tical terms. The Syntax is an opinion but it really does feel easier to see what is happening since everything is in brackets)Racket is a really a Programming Language for making Programming Languages. If you want to add libraries just open the package manager. OK, so what’s the secret? As a programmer, you end up getting two bites at the apple every time you run a file: Racket runs the macros (which alter the source code), and then the source code itself. I was hopeful when I opened Peter Seibel’s Prac­tical Common Lisp and saw that the intro­duc­tion was subti­tled “Why Lisp?” Yes, tell me! Racket - A general-purpose, multi-paradigm programming language . That expe­ri­ence will make you a better programmer for the rest of your days, even if you never actu­ally use Lisp itself a lot.” Unfor­tu­nately Raymond doesn’t follow up this claim by describing the “enlight­en­ment expe­ri­ence,” nor why it’s “profound,” nor how it will improve your program­ming skills gener­ally. And by commit­ting to a Lisp, would I be painting myself into a corner? Rather, you are—because a Lisp language offers you the chance to discover your poten­tial as a programmer and a thinker, and thereby raise your expec­ta­tions for what you can accom­plish. Read the blog post again. You don’t run into the syntactic guardrails that are lurking in other languages. As you get a feel for lists and expres­sions, it does pay increasing divi­dends throughout the language. I never got it. This means that the way you think about a program­ming problem can be quite close to the way you actu­ally program it. By making every­thing an expres­sion, however, Lisps remove this limi­ta­tion. (OK, parts. For that reason, I agree with Seibel—trying it your­self is the best way to be convinced of the bene­fits. What are the best FLOSS languages/runtimes which can embedded in applications via a C API? Seibel is passing the buck when he says that to under­stand the bene­fits of Lisp, “you’re going to have to learn some Lisp and see for your­self”. 3 years ago. But compare Beating the Aver­ages, by Paul Graham, which is. But a func­tion call is also a list. Seibel wonders whether “I like Lisp because of some quirk in the way my brain is wired. When I’m program­ming, however, I’m using compu­ta­tion. In fact, the source code for the func­tion is a list. This book was made pos­si­ble by a pub­lish­ing sys­tem called Pollen. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. The bene­fits of lists are similar to that of expres­sions. It’s similar to the basic idea behind Legos. As program­mers, they’re way out of my league. As a conse­quence of being used in research settings for many years—Racket’s core devel­op­ment team is made of computer-science profes­sors—Racket’s libraries & docs are more like a trans­mis­sion from a highly evolved alien intel­li­gence. So by the simplest defi­n­i­tion—does the skill make you money?—I suppose I qualify as a profes­sional programmer.