Beautiful Code: Leading Programmers Explain How They Think (Theory in Practice (O'Reilly))
Greg Wilson
Language: English
Pages: 620
ISBN: 0596510047
Format: PDF / Kindle (mobi) / ePub
How do the experts solve difficult problems in software development? In this unique and insightful book, leading computer scientists offer case studies that reveal how they found unusual, carefully designed solutions to high-profile projects. You will be able to look over the shoulder of major coding and design experts to see problems through their eyes. This is not simply another design patterns book, or another software engineering treatise on the right and wrong way to do things. The authors think aloud as they work through their project's architecture, the tradeoffs made in its construction, and when it was important to break rules. Beautiful Code is an opportunity for master coders to tell their story. All author royalties will be donated to Amnesty International. tion.
with sev- eral iterators at once. This multi-iterator object also handles the broadcasting functionality of NumPy automatically. Broadcasting is the name given to the feature in NumPy that allows arrays with different shapes to be used together in operations that are supposed to work element-by-element. For example, broadcasting allows a (4,1)-shaped array to be added to a (3)-shaped array resulting in a (4,3)-shaped array. Broadcasting also allows simultaneous iteration over a (4,1)-shaped
where it’s important to keep the rest of the application running while you are replacing part of it. With a small program, you’d probably just rerun the program to make a change. A H I G H L Y R E L I A B L E E N T E R P R I S E S Y S T E M F O R N A S A ’ S M A R S R O V E R M I S S I O N 337 Conclusion The Collaborative Information Portal proves that it is possible—yes, even at a huge gov- ernment agency like NASA—to develop a large complex enterprise software system on time that
STM ( ) -- (limitedWithdraw2 acc1 acc2 amt) withdraws amt from acc1, -- if acc1 has enough money, otherwise from acc2. -- If neither has enough, it retries. limitedWithdraw2 acc1 acc2 amt = orElse (limitedWithdraw acc1 amt) (limitedWithdraw acc2 amt) Because the result of orElse is itself an STM action, you can feed it to another call to orElse and so choose among an arbitrary number of alternatives. Summary of Basic STM Operations In this section, I have introduced all the key
(funcall emacspeak-personality-voiceify-faces start end voice object))) (error nil))))) Here is a brief explanation of this advice definition: Bind arguments First, the function uses the advice built-in ad-get-arg to locally bind a set of lexical variables to the arguments being passed to the adviced function. Personality setter The mapping of faces to personalities is controlled by user customizable variable emacspeak-personality-voiceify-faces. If non-nil, this variable specifies a
datum->syntax procedure used for arbitrary error bounds, 250 expressions in syntax-case, 413 error-correcting codes, 159 statements vs., 140 errors extend-wrap helper, 423 communication mechanism in LAPACK extensibility of software, 83 SGBSV routine, 260 extension points, discovering, 513 recovery problems with locks, 388 external clients, exposing services to, 452–455 574 I N D E X F flow in beautiful code, 265 Fogel, Karl, 11–28 Factory class (Bio::Graphics::Glyph), 201–205