Programming - Software Engineering The Practice of Programming phần 10 potx

... directly from the machine - readable text. More information is avail - able at the web site for The Practice of Programming: The majority of the programs are in C, with a number of examples ... sight of the basic principles - simplicity, clarity, generality - that form the bedrock of good software. One can also overlook the value of tools and n...

Ngày tải lên: 13/08/2014, 08:20

... program: 24, the number of rows on the screen; 80, the number of columns; and 26, the number of letters in the alphabet. But none of these appears in the code, which makes the num - bers that do even ... NELEMS(htm1chars)) ; to find the array index of the character %. Binary search eliminates half the data at each step. The number of steps is there...

Ngày tải lên: 13/08/2014, 08:20

... byte of the string to a multiple of the hash so far. The multiplication spreads bits from the new byte through the value so far; at the end of the loop, the result should be a thorough mixing of ... The larger the size, the shorter the expected length of the chains and thus the faster the lookup. This program is really a toy, so the per - form...

Ngày tải lên: 13/08/2014, 08:20

... advquoted. The new version of advquoted uses the C++ standard function find - fi rst - of to locate the next occurrence of a separator character. The call s . f i nd-f i rst - of (f ... version of the CSV library to address some of the remaining limitations of the C version. This will entail some changes to the speci - fication, of...

Ngày tải lên: 13/08/2014, 08:20

... ensuring the integrity of a software design - program proofs, modeling, requirements analysis, formal verification - but none of these has yet changed the way software is built; they have ... of their most common uses is to examine the state of a program after death. The source line num - ber of the failure, often part of a stack trace, is the most...

Ngày tải lên: 13/08/2014, 08:20

... manner of tests of pattern - matching and tok - enization. (The test directory was of course created by a program.) For years after - wards, that directory was the bane of file - tree - walking ... of the lessons of this chapter to test - ing this program? The first set of tests consists of a handful of tiny files that check boundary condi...

Ngày tải lên: 13/08/2014, 08:20

... domi - nate the performance. Knuth's guideline is right: a small part of the program con - sumes most of the run - time. When a program is first profiled, it's common to see the top - running ... Knuth's profiling paper, " An Empirical Study of FORTRAN Programs, " appeared in Software - Practice and Experience, 1, 2, pp....

Ngày tải lên: 13/08/2014, 08:20

... advantage of the strengths of each system. The drawbacks include the size and complexity of the installation process and the complexity of code riddled with compile - time condi - tionals. ... assume the first byte of the packet can be used to deter - mine the layout. The sender encodes the data in this format and ships it; the receiver reads...

Ngày tải lên: 13/08/2014, 08:20

... utterance in the language. Furthermore, the right implemen - tation can run very fast; a combination of theory and engineering practice makes a lot of difference, an example of the benefit of specialized ... charac - ter of the text from left to right, it should skip over the longest string that matches the starred operand, then back up if the rest of...

Ngày tải lên: 13/08/2014, 08:20

... wide range of tools and also guides the structure of the programs that write programs. We are all comfortable in the large general - purpose languages that serve for the bulk of our programming. ... metacharacter, +. 223.228 0 - notation, see also algorithm 0 - notation, 4 0-4 1 table, 41 on - the - fly compiler, see just - in - time...

Ngày tải lên: 13/08/2014, 08:20