Download Beautiful Code: Leading Programmers Explain How They Think by Andy Oram, Greg Wilson PDF

By Andy Oram, Greg Wilson

This ebook is a set of many articles via diversified authors, that's imagined to light up what they behold as attractive engineering. Now it really is stated that good looks is within the eye of beholder, and a few readers should be surprised by means of attractiveness and aha moments during the ebook. despite the fact that to me it appears like so much articles describe how authors used the apparent good judgment to architect this or that, and that lovely aha second to behold is nowhere to be obvious. i used to be tempted to place the booklet down as a rule, yet saved on interpreting purely in hopes that subsequent bankruptcy by way of varied writer approximately varied subject could make it eventually worthy it.

And one bankruptcy did it! Titled "Accelerated inhabitants count number" by way of Henry S. Warren, Jr (which is ready calculating bit counts in arrays) is actually breathtaking and encouraging. Now, is it worthy procuring this booklet only for one small yet first-class article? might be, when you consider that A) it is that solid, and B) i will not locate it pointed out anyplace else, together with the actually fabulous "Hacker's pride" through comparable Henry S. Warren Jr. (the "Hacker's pride" describes cool tips within the bit counting zone, yet does not point out CSA).

If you have an interest within the premise of this ebook, here's my recommendation:
1. purchase the "Programming Pearls", and get to grasp the true appealing code one hundred and one by way of heart
2. purchase the "Hacker's Delight", and maintain is as a reference at the bit twiddling algorithms
3. cease on the library or book place for quarter-hour, and browse the "Accelerated inhabitants count number" from the "Beautiful Code"

Have enjoyable!

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Read or Download Beautiful Code: Leading Programmers Explain How They Think (Theory in Practice (O'Reilly)) PDF

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Additional info for Beautiful Code: Leading Programmers Explain How They Think (Theory in Practice (O'Reilly))

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When the producer is finished making changes to a file, it should call close_file, to let the consumer clean up and free the baton. Function Call Ordering ====================== There are five restrictions on the order in which the producer may use the batons: 1. The producer may call open_directory, add_directory, open_file, add_file at most once on any given directory entry. delete_entry may be called at most once on any given directory entry and may later be followed by add_directory or add_file on the same directory entry.

Add character classes such as [abc] and [0-9], which in conventional grep notation match a or b or c and a digit, respectively. This can be done in several ways, the most natural of which seems to be replacing the char* variables of the original code with a structure: typedef struct RE { int type; int ch; char *ccl; int nccl; } RE; /* /* /* /* CHAR, STAR, etc. ] */ and modifying the basic code to handle an array of these instead of an array of characters. It’s not strictly necessary to separate compilation from execution for this situation, but it turns out to be a lot easier.

Examples 3-4 through 3-6 implement a simple model of Quicksort: they mimic one run of the algorithm, without actually doing the work of sorting. Examples 3-7 through 3-12 implement a more sophisticated model: they compute the true average number of comparisons without ever tracing any particular run. 36 CHAPTER THREE The techniques used to achieve each program are summarized as follows: • Examples 3-2, 3-4, 3-7: Fundamental change of problem definition. • Examples 3-5, 3-6, 3-12: Slight change of function definition.

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