EBOOK DOWNLOAD Literate Programming Center for the Study of Language and Information Lecture Notes

Literate Programming Center for the Study of Language and Information Lecture Notes

FREE READ ç MY-KASPERSKY.CO.UK î Donald Ervin Knuth

7 are the real meat of the book or at least what a reader may expect from the title Chapter 4 is Literate Programming 1984 the original article that introduced Literate Programming Chapter 5 is Programming Pearls Sampling 1986 by Jon Bentley in which Bentley introduced Literate Programming to the readers of the Communications of the ACM through his column and Chapter 6 is Programming Pearls Continued Common Words 1986 the follow p column in which Knuth wrote a literate program as asked accompanied by a review by Doug McIlroy Literature deserves literary criticism and McIlroy sets a wonderful example I wish program reviews had become a regular feature Chapter 7 is How to Read a WEB 1986 another brief introduction to Literate Programming meant for readers who mainly wish to read literate programs written in WEBChapter who mainly wish to read literate programs written in WEBChapter consists of Excerpts from the Programs for TEX and METAFONT 1986 Chapter 9 has excerpts from Mathematical Writing 1987 another wonderful book that came out of a course on mathematical writing at Stanford taught by Knuth It consists of informal class discussions on programming style and examining real literate programs written by other students written by a student Paul Roberts Finally Chapter 10 The Errors of TEX 1989 is an article where Knuth analyses all the bugs that were ever fixed in TeX from the trivial to the serious He attributes TeX s being bug free besides opinions held by some that TeX itself is a bug to literate programming and this analysis was possible because he kept a detailed log which is reproduced as Chapter 11 The Error Log of TEX 1978 1991Finally Chapter 12 An Example of CWEB 1990 contains one of the first examples of literate programming outside the WEB system of TeXPascal since CWEB is TeXC They write a drop in replacement to Unix s wc program which counts words lines or charactersAll in all it s a good book especially for those who find almost everything written by Knuth deeply enjoyable Even in sections of the written by Knuth deeply enjoyable Even in sections of the that are Dance With The Devil unrelated to literate programming per se Knuth s example programs contain clever algorithms and data structures that can be instructive It is not an ideal book for evangelizing literate programming however one wishes that someone preferably Knuth had written a book that is not so tied to the particular combination of Pascal and TeX with its documentation designed for paper with page numbers and indexesnfamiliar to the majority of programmers today Three and a half stars I m not entirely sure what to think about this book On one hand it did make me think and some of the articles such as Computer Programming as an Art and The Errors of TEX were particularly good But the central thesis of the book literate programming just did not work for me at least not in the examples provided Frankly I did not find Knuth s literate programs either fun to read or easily nderstood than well designed code with well chosen variable and function names would have been and far too many of Knuth s variable names are obscure The reordering of code didn
t really do 
really do for me nor did I find the se of special symbols to enhance a program s readability But it works for some people the approach still has its adherents and I certainly feel in sympathy with them than with the comments as an antipattern crowd Had been sitting on my shelf at work for a while finally polished it offKnuth is a pretty incredible dude He wrote TeX without even running it and basically nailed it I didn t really Tured programming as well as The Computer Journal article that launched literate programming itself Many examples are given including excerpts from the programs for TeX. A paradigm shift for how humans should what they intend the computers do Knuth has an Interesting Idea Here One I idea here I like to explore further One I have been exploring further Frankly however it s nderdeveloped in this book He One I have been exploring further Frankly however it s nderdeveloped in this book He hardly be faulted for that the idea is from an early time before HTML and other modern markup sophistication What I found most surprising was considering how dedicated to beautiful documentation this creator of TEX is his literate programming notation like his typesetting notation is simply not beautifulI think there is lots of 1898 untapped potential in this idea A modern retelling plus enhancements could relegate this first pass to a footnote of ancestral acknowledgement If literate programming ever takes off it won t lookite like this I really wanted to like this whole book it is nicely typeset looks great is organized clear etc but I ended Night of the Werewolf (Choose Your Own Nightmare, up not liking it a whole lotThe main premise of the book is to do Literate Programming and that it will prevent bugs and is the right way to write code This is not true it isseful in certain instances when applications are small and are very algorithmically intensive Nowadays a lot of code written is not intensive enough where every snippetfunction has to be documentedThe Lay My Burden Down underlying reasons for why to do Literate Programming are still valid try something to make your craft better There are many examples in this book of what Knuth did aside from Literate Programming One such example is keeping a good track of bugs to see which ones happen most often and then try to figure out how to prevent themIn summary this book is a good read to see how one smart guy a while ago in computer terms tried to improve his code writing ability This is a collection of material by Knuth about the philosophy and practice of Literate Programming his idea of programs as literature All programmers today claim tonderstand the importance of readable code and slogans like Programs must be written for people to read and only incidentally for machines to execute are occasionally heard from several Vérité (Love at Center Court, uarters however with most programmers such noble intentions seem to stop at the intention of writing a lot of comments to document their code It is only the literate programming system that really takes the idea seriously and to its logical conclusion by 1 freeing the programmer to write code in whatever order is appropriate for exposition not the order that the compiler wants and generally 2 being a system for writing a document that contains the program not for documenting a program after it has been written The first feature means that literate programming can beseful even if you don t write a single line of commentsThis book like the books in Knuth s Selected Papers in series is a collection of disparate papers and articles written over many decades each of which has some some connection in the author s mind at least to literate programming The first three chapters are Computer Programming as an Art 1974 Knuth s Turing Award lecture Structured Programming with go to Statements 1974 a very long paper discussing several topics that were being debated at the time as part of the Structured Programming revolution and a short A Structured Program to Generate All Topological Sorting Arrangements 1974 written with Jayme L Szwarcfiter These were all written before the idea of literate programming had been conceived but they give insights into Knuth s philosophy of programming Chapters 4 to. This anthology of essays from Donald Knuth the father of computer science and the inventor of literate programming includes early essays on related topics such as struc. Ake anything away from the book though Everything is so totally old school it s hard to relate and writing programs to be read is SO MUCH EASIER with the languages we have today I feel pretty spoiled actually Post Tex and Metafont and pre Selected Papers Knuth experimented with a document system he named Web Beyond the Qumran Community uite a few years before Tim Berners Lee wrote a little system at CERN on his NeXT box Web like TeX has a detailed assembly language like view of documents which we might view asaint today but little gems still exist in this bookBy far and away in the most important still exist in this bookBy far and away in the most important chapter to this day is the guest oyster column of Jon Louis Bentley s brief Communications of the ACM column Programming Pearls wherein Don writes a little table building program in Pascal It would be enough but the real gem which every programmer needs to read and Daniels Pet understand is Doug McIlroy s rebuttal which practically demolishes Knuth s faberge egg I think Don grinned a great smile when friends show him to be humanProgrammers should own this book I ve recently read books by several mathematiciansprogrammers such as Dijkstra and Stepanov and some research papers from Jet Propulsion Labs The advantages mathematicians have when it comes to programming are experience with ways to precisely describe algorithms and logic and experience reasoning from first principlesKnuth is another famous mathematicianprogrammer While literate programming avoids formal descriptions and math like notation thenderlying philosophy is a general reuirement to describe algorithms and logic in a conversational way In other words literate programming promises many though not all of the benefits of formal methods without some of the hassleThe essays on structured programming are pure bonuses Sure all modern programming languages are designed around structured programming principles However it S GOOD TO BE REMINDED OF good to be reminded of made structured programming such an improvement the formalization and enforcement of invariantsDon t skip The Errors of Tex chapter either It includes significant seful and pragmatic programming advice Classic essays on improving the state of programming literature For the most part I will assume that folks picking p this book are already predisposed to like the ideas I will say that it provides a very nice historical context into how software creation has progressed In particular the essay on goto statements was a lot fun than would have been expectedHighlights definitely include the Programming Pearls essay the final CWEB example and the retrospective on TeX bugs The retrospective is fascinating to get an idea of just how Knuth approaches software construction I have since bought the TeXbook and related material to see any insights that gives It would be a delight to see how he sketched the high level design of the systemI should note that Knuth goes out of his way to say that Literate Programming will not lead to error free software Rather the point is that this style can easily motivate others including your future self to read an implementation such that they can easily find the bugsThis is an argument that is very appealing to me Especially in what I perceive as the current environment where the popular currents feel that they are trying to remove all considered harmful practices such that they can not be Kingdom Hearts Birth by Sleep (light novel) used even for validses I look forward to at least trying these techniues on of my side projects while keeping the dream of PHILIPPINES 1/1M3 using it on a large on. And METAFONT The final essay is an example of CWEB a system for literate programming in C and related languagesThis volume is first in a series of Knuth's collected work.

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