--- product_id: 66141778 title: "The Reasoned Schemer, second edition (Mit Press)" brand: "daniel p. friedmanwilliam e. byrdoleg kiselyovjason hemannduane bibby" price: "$U4836" currency: UYU in_stock: true reviews_count: 11 url: https://www.desertcart.uy/products/66141778-the-reasoned-schemer-second-edition-mit-press store_origin: UY region: Uruguay --- # The Reasoned Schemer, second edition (Mit Press) **Brand:** daniel p. friedmanwilliam e. byrdoleg kiselyovjason hemannduane bibby **Price:** $U4836 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** The Reasoned Schemer, second edition (Mit Press) by daniel p. friedmanwilliam e. byrdoleg kiselyovjason hemannduane bibby - **How much does it cost?** $U4836 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/66141778-the-reasoned-schemer-second-edition-mit-press) ## Best For - daniel p. friedmanwilliam e. byrdoleg kiselyovjason hemannduane bibby enthusiasts ## Why This Product - Trusted daniel p. friedmanwilliam e. byrdoleg kiselyovjason hemannduane bibby brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Full description not available ## Images ![The Reasoned Schemer, second edition (Mit Press) - Image 1](https://m.media-amazon.com/images/I/81+li6wHssL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars fascinating and challenging *by M***R on Reviewed in the United States on February 5, 2007* As the saying goes, if you like this sort of thing, this is the sort of thing you'll like. The authors have extended the approach of their classic book _The Little Schemer_ to encompass what is usually called logic programming, but which they refer to as "relational programming" (a much better name, in my opinion). They extend the Scheme language with relational analogues of many constructs, notably lambda and cond (in many, many variations), and also provide extended versions of standard Scheme operations like cons, car, and cdr. Basically, the relational approach involves taking the result of a function call and making it just another argument, but a special argument that can get assigned to as the result of the computation. Big deal, so what? you ask. The important thing is that _all_ of the function arguments behave this way, so that you can specify the result of a function (relation) and ask the system to generate the arguments. For instance, instead of saying 2 + 2 = X and figuring out what X is, you can say X + 2 = 4 and the system will figure out what X has to be (in this case... ummm... oh yeah, 2). To do this, the system uses a mechanism called "backtracking" which systematically tries alternatives until it either finds the answer, gives up, or (if you didn't program the search right) goes on forever. If you haven't seen this style of programming before, this book will definitely open your eyes.The relational/logic programming style is usually learned by studying the Prolog language, which is how I learned it (though I'm no expert). Having a knowledge of Prolog will definitely make this book easier to understand, although the approach given here is more modern than Prolog in several ways. For one thing, the named relations of Prolog are replaced here by anonymous relations (analogous to lambda expressions being anonymous functions), and for another, the (somewhat brutal) "cut" operator of Prolog, which is used to control backtracking, is ignored in favor of more subtle approaches involving interleaving solutions and giving up after single results are found.I think the approach of learning-by-pattern-recognition that all the "Little X" books use is fairly effective here, though I think a lot of readers (meaning me) wouldn't mind a more extended discussion of the mechanics of the system.All in all, if you liked _The Little Schemer_ and are curious about new ways of programming, you should definitely pick up a copy of this book. It will stretch your mind like a Slinky, and when you're done you'll have learned a new way of looking at programming. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars it is not as easy as that *by S***E on Reviewed in the United States on December 2, 2016* I gave this book 5 stars, but as this book is in a complete category of its own, that is kind of a technicality. The Reasoned Schemer is a book that introduces you to the notion, usage, and application of logic programming. It is entirely structured in a question/answer format, which slowly introduces you to all the base "control" structures you would need in logic programming.Non logic programming basically works from the notion of imperative data flow. This is generally represented by the concept of a function. A function takes a argument and returns a value, it takes input variables and returns output variables. A logic program creates a relation (not a function) between a set of variables. If you had a two input function, with one output, you could represent this as a logic program relation of three variables. Two of those relation variables would be what were the two inputs to the function, the third variable would be the output of the function. Here is the kicker though. You can provide concrete values for any number of those variable in any order and ask the relation what the other variables might be. At the simplest level, this means that you might run your function "backwards" (from the output to the input). But really, it means that you can ask any question relating to those variables (conceptually). Now, realistically, it is not as easy as that. Some relations may never terminate (return a answer), some grow too large and barf (overflow), some may not complete for various other reasons. It can be more complex to actually write a logical relation than a function, this must be balanced against the fact that the relation is far more powerful than the function.If you want a primer for logical programing, this book is probably worth your time. It takes you through writing many of the fundamental parts of a logical relation. The only thing I think it really skips is the actual unification (= x y) primitive itself, which I believe it uses as a given. You can learn quite a bit by reading this code slowly and carefully. Note however, that you must complete every step of the question/answer pairings! Skimming this book will not work (unless you already know it). Really, these concepts build on each other. It is a rather small (page number and physically) book, but it will take far more time to really go through then its size would suggest. Read and work through for the purpose of understanding, and I think you will really get a good backing in logic programming, and probably enjoy yourself as well!Note: The above statements applied to the paper edition.The Kindle version of this Book is pure garbage. Here I am, on a 2016 Macbook Pro with a Retina Display and I can barely read the damn thing. I tried reading on my Android, just awful. I tried on my Windows PC, same. A good deal of the information in this book is communicated by bolding and italics. These are incredibly difficult to see in the Kindle version. Shame on the publisher for releasing such an inferior thing to the public. Disappointed in Amazon for not enforcing minimum legibility standards on non free Kindle books. DO NOT EVEN CONSIDER BUYING THE KINDLE EDITION! ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Really good but not funny *by A***R on Reviewed in the United States on October 26, 2015* Really good introduction to the topic.No where near as funny as advertised.To the point and hinting at complications without getting distracted. Short but still compleat. ## Frequently Bought Together - The Reasoned Schemer, second edition (Mit Press) - The Seasoned Schemer, second edition (Mit Press) - The Little Typer (Mit Press) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.uy/products/66141778-the-reasoned-schemer-second-edition-mit-press](https://www.desertcart.uy/products/66141778-the-reasoned-schemer-second-edition-mit-press) --- *Product available on Desertcart Uruguay* *Store origin: UY* *Last updated: 2026-05-21*