Donald Knuth. “Literate Programming ()” in Literate Programming. CSLI, , pg. I believe that the time is ripe for significantly better documentation of . Literate programming: Knuth is doing it wrong. Literate programming advocates this: Order your code for others to read, not for the compiler. Literate. What is Literate programming? Literate programming is a style of programming invented by Donald Knuth, where the main idea is that a program’s .
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The system should be presented in an order based upon logical considerations rather than syntactic constraints. Literate programming encourages meaningful documentation and the inclusion of details that are usually omitted in source code such as the description of algorithms, design decisions, and implementation strategy.
Literate programming – Wikipedia
Literate programming is a methodology that combines a programming language with a documentation language, thereby making programs more robust, more portable, more easily maintained, and arguably more fun to write than programs that are written only in a high-level language. The unraveling of the chunks can be done in any place in the literate program text file, not necessarily in the order they are sequenced in the enclosing chunk, but as is demanded by the logic reflected in the explanatory text that envelops the whole program.
The Art of Donald E. Knuth wrote a “novel” which explains the code of the interactive fiction game Colossal Cave Adventure. Literate programming Programning introductions in Then, to understand the complicated whole, what you needed is just to understand the small parts, and to understand the relationship between programmming parts and their neighbors. Literate programming is not a documentation system per ce, it’s a programming paradigm.
In fact, macros can stand for any arbitrary chunk of code or other macros, and are thus more general than top-down or bottom-up “chunking”, or than subsectioning.
However, I promise to reply in due time. The practitioner of literate programming can be regarded as an essayist, whose main concern is with exposition and prkgramming of style. Avoid duplicate code by creating shared functions.
Document source code using an API documentation standard doxygen. The structure of a software program may be thought of as a “WEB” that is made up of many interconnected pieces.
Literate programming is NOT about documentation in the first place. The whole concept of code sections, indeed structured programming, is to reduce the amount of text that must be read in order to determine what a piece of code is doing.
Journal of Statistical Software. Errata For a list of corrections to errors in the first printing of this book, you may download either the errata file in plain TeX format bytes or khuth errata file in DVI format bytes progrmaming the errata file in compressed PostScript format bytes ; the latter files were generated by the TeX file, and last updated 12 Jun Literate programming macros can hide any chunk of code behind themselves, and be used inside any low-level machine language operators, often inside logical operators such as ” if “, ” while ” or ” case “.
If Microsoft had made source files XML, tens of thousands of programmers would already be putting pictures and hyperlinks in their code. This may seem like a trivial change, but in fact literate programming is quite different from other ways of structuring software systems. This integration must be understood as a will to close cooperation with the other holons for the emergence of a “tougher” and more efficient component.
Dobbs Journal, Marchpg. The clarity of literate programs enables team members to reuse existing code and to provide constructive feedback during code reviews.
Innovative ideas, critical technical knowledge, algorithmic solutions, and unusual coding constructions are clearly documented. All of that is here in the pages that follow. Scattered in amongst the program code are comments which describe the various parts of the code.
Macros in a literate source file are simply title-like or explanatory phrases in a human language that describe human abstractions created while solving the programming problem, and hiding chunks of code or lower-level macros.
The simplest form of subroutine consists of a sequence of orders which can be incorporated as it stands into a program. Again, I did this in the interests of simplicity, because I noticed that most applications of multiple parameters could in fact be reduced to the one-parameter case.
Code sections improve on verbose commenting by providing the ability to write descriptive paragraphs while avoiding cluttering the source code. Neither type of language can provide the best documentation by itself; but when both are appropriately combined, we obtain a system that is much more useful than either language separately.
Such an author, with thesaurus in hand, chooses the names of variables carefully and explains what each variable means. The literate programming paradigmas conceived by Knuth, represents a move away from writing programs in the manner and order imposed by the computer, and instead enables programmers to develop programs in the order demanded by the logic and flow of their thoughts. Schulte, Eric January There had to be compromises.
Of course, I developed TeX so that it would try to continue a history of hundreds of years of different ideas. Literate programming was first introduced by Donald E.
Cross references, indices, and programminb fonts for text, high-level language keywords, variable names, and literals should be reasonably automatic and obvious in the source and the documentation. The preprocessor also provides an ability to write out the content of the macros and to add to already created macros in any place in the text of the literate program source file, thereby disposing of the need to keep in mind the restrictions imposed by traditional programming languages or to interrupt the flow of thought.
Knuth called these modules or sections.
This concept proceeds from the work of Simon. But after gaining experience with WEB, I have come prrogramming realize that there is no need to choose once and for all between top-down and bottom-up, because a program is best thought of as a web instead of a tree. But sigh it probably isn’t. Knuth’s expository gem will teach future readers about programming style and data structures, whether they use the code or not.
The program is also viewed as a hypertext document, rather like the World Wide Literatte. The number of lines in a file is The documentation portion is often a verbal description of the algorithm.