Fundamentals of Programming Languages by Ellis Horowitz (auth.)

By Ellis Horowitz (auth.)

" .. .1 continuously labored with programming languages since it appeared to me that until eventually you may comprehend these, you actually could not comprehend pcs. realizing them does not rather suggest purely with the ability to use them. lots of people can use them with no realizing them." Christopher Strachey the advance of programming languages is likely one of the best highbrow achievements of the hot self-discipline known as computing device technological know-how. And but, there is not any different topic that i do know of, that has such emotionalism and mystique linked to it. hence, my try and write approximately this hugely charged topic is concerned about a great deal of in my position as professor i've got felt the necessity for a warning. however, glossy remedy of this topic. conventional books on programming languages are like abbreviated language manuals, yet this e-book takes a essentially assorted viewpoint. i think that the very best option to research and comprehend trendy programming languages is by way of targeting a couple of crucial thoughts. those innovations shape the description for this ebook and comprise such issues as variables, expressions, statements, typing, scope, strategies, info kinds, exception dealing with and concurrency. through knowing what those ideas are and the way they're discovered in numerous programming languages, one arrives at a degree of comprehension a long way more than one will get through writing a few courses in a xii Preface few languages. additionally, wisdom of those recommendations offers a framework for knowing destiny language designs.

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Produce a clear, concise language manual and release it; 9. Provide a production quality compiler and distribute it widely; 10. Write marvelously clear primers explaining how to use the language. Table 2-1: The Ten Step Method to Successful Language Development 45 Some Possible Solutions Concepts Discussed in This Chapter Axiomatic semantics Denotational semantics Efficient object code Extensibility Fast translation Generality Interpretive semantics Orthogonality Portability Provability Readability Subsets Exercises 1.

For students, diagnostic compilers make sense as they spend a great deal of their time getting the program to work and almost no time running the program on real data. However, diagnostic compilers cannot replace building reliability into the language itself. Even diagnostic compilers have limitations. One problem is that they are usually inefficient, especially on large runs. Thus, in a real-world environment, it becomes impossible to use the diagnostic compiler because it will cost too much to try it on significant test cases.

Some Possible Solutions "I have never designed a programming language, only programming language features. It is my belief that these two design activities should be more clearly separated in the future. 1) The designer of a new feature should concentrate on one feature at a time. If necessary, he should design it in the context of some wellknown programming language which he likes. He should make sure that his feature mitigates some disadvantage or remedies some incompleteness of the language without compromising any of its existing merits.

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