4 donald e knuth the art of computer programming vol 3

... the mathematics and the software Taken together, they are the story of a sequence of very recent developments that have changed the field on which the game of discrete mathematics is played We ... some very general identities were found It was not until 19 74, however, that the recognition mentioned above occurred There was, therefore, a considerable time lag between the development of the ... The a’s and the b’s are called, respectively, the upper and the lower parameters of the series The b’s are not permitted to be nonpositive integers or the series will obviously not make sense...

Ngày tải lên: 20/12/2013, 19:15

Ngày tải lên: 13/08/2014, 08:21

Ngày tải lên: 22/08/2016, 17:56

... Computer Architecture Dependency 3. 2 CPU Dependency 3. 3 Operating System Dependency 3 .4 Operating System Version Dependency 3. 5 File System Dependency 3. 6 File Format Dependency 3. 7 Interpreted Environment ... Section 3. 1 Computer Architecture Dependency Section 3. 2 CPU Dependency Section 3. 3 Operating System Dependency Section 3 .4 Operating System Version Dependency Section 3. 5 File System Dependency Section ... Linker Dependency 3. 19 Device Translator Layer Dependency 3. 20 Embedded Object Insertion Dependency 3. 21 Self-Contained Environment Dependency 3. 22 Multipartite Viruses 3. 23 Conclusion References Chapter...

Ngày tải lên: 17/02/2014, 15:20

... (parts of which serve as examples in the book) have benefited from the advice, feedback, and/or encouragement of many people, especially Mark Bravington, Stephen Eglen, Dirk Eddelbuett, Jay Emerson, ... the first few rows: > head(examsquiz) V1 V2 V3 16 Chapter www.it-ebooks.info 2.0 3. 3 4. 0 2 .3 2 .3 3 .3 3 .3 2.0 4. 3 0.0 1.0 3. 7 4. 0 3. 7 4. 0 3. 3 3. 3 4. 0 Lacking a header for the data, R named the ... of subsets of vectors Vectorization Where functions are applied element-wise to vectors All of these operations are central to R programming, and you will see them referred to often in the remainder...

Ngày tải lên: 23/03/2014, 05:24

... Contents in Detail 25 26 26 27 28 28 29 30 30 31 32 33 34 35 35 37 39 40 42 43 43 44 45 45 47 47 48 49 51 54 56 56 59 59 61 61 62 63 66 69 3. 3 3 .4 3. 5 3. 6 3. 7 3. 8 Applying Functions ... frame The net effect is to report a count of z = in the original frame The terms object-oriented programming and functional programming were mentioned earlier These topics pique the interest of computer ... Since there are three odd numbers in the vector (1 ,3, 5), the call oddcount(c(1 ,3, 5)) returns the value There are four odd numbers in (1,2 ,3, 7,9), so the second call returns Getting Started Notice...

Ngày tải lên: 18/04/2017, 10:25

... of the n smallest items in the two sequences The next value, c(n + 1), will require one more item from HIDDEN LINEAR RECURRENCES 25 either the A a sequence or the Ab sequence, the smaller item ... 31 4C7 42 5C8 Score: 3 4 3 3 How will this affect the final score? The score is the length of the region between the pointer and the next free cell If the new key lands in this region the score is ... the non-leaders in a cycle of size n A recurrence arises from the observation that the second smallest element in the cycle partitions the problem For convenience we place the cycle leader (the...

Ngày tải lên: 18/04/2017, 12:21

Ngày tải lên: 08/08/2012, 19:08

Ngày tải lên: 26/01/2014, 08:20

... the names of the classes they describe, Qt also provides header files for its libraries Each of these files contains the interface descriptions of all of the classes of a library; the name of the ... whether the signal/slot connections have the desired effects The Designer also has a mode that specifies the tab sequence of the widgets; that ✞ ☎ is, the order in which the user accesses the individual ... behind, even when using extensions like XRender Team Arthur, headed by Gunnar Sletta, therefore set itself a new goal: to match the feature set offered by SVG The team was determined not to rest...

Ngày tải lên: 28/04/2014, 16:56

... represent the situations where effect 93 is present Figure 4. 18 represents the remainder of the decision table The last step is to convert the decision table into 38 test cases A set of 38 test ... byte of displayed range does not fall on a word boundary The next step is the development of the graph The cause nodes are listed vertically on the left side of the sheet of paper; the effect ... in the table represent “don’t care” situations (i .e. , the state of the cause is irrelevant) or indicate that the state of a cause is obvious because of the states of other dependent causes (e. g.,...

Ngày tải lên: 09/08/2014, 16:20

... in the 39 Art of Creative Thinking 1-1 34 : Creative Thinking 3 /4/ 07 10 :37 Page 40 The Art of Creative Thinking human face the same sort of expression of the process of growth and struggle as he ... make detailed observations For they are the materials for future creative thinking 42 Art of Creative Thinking 1-1 34 : Creative Thinking 3 /4/ 07 10 :37 Page 43 Keep Your Eyes Open KEYPOINTS The ability ... help but be in awe when one contemplates the mysteries of eternity, of life, of the marvellous structure of reality It is enough if one tries merely to comprehend a little of this mystery every...

Ngày tải lên: 10/08/2014, 07:21

... boundary The next step is the development of the graph The cause nodes are listed vertically on the left side of the sheet of paper; the effect nodes are listed vertically on the right side The semantic ... receives a and the other receives a 100) 36 The standard deviation is (all students receive the same grade) The Art of Software Testing - Second Edition Página 49 Simpo Chapter 4: Test-Case Design ... operand keywords; lowercase letters represent operand values (i .e. , actual values are to be substituted) Underlined operands represent the default values (i .e. , the value used when the operand is...

Ngày tải lên: 13/08/2014, 08:21

... the names of the classes they describe, Qt also provides header files for its libraries Each of these files contains the interface descriptions of all of the classes of a library; the name of the ... for these mechanisms, there are further requirements demanded of classes having QObject as a base class: the treatment of events and the translation of strings from one language to another These ... behind, even when using extensions like XRender Team Arthur, headed by Gunnar Sletta, therefore set itself a new goal: to match the feature set offered by SVG The team was determined not to rest...

Ngày tải lên: 13/08/2014, 08:21

... whether the signal/slot connections have the desired effects The Designer also has a mode that specifies the tab sequence of the widgets; that ✞ ☎ is, the order in which the user accesses the individual ... for example, the hexChanged() signal of the decEdit object in a dialog to the setDec() slot of the associated ByteConverter If the user enters a new decimal value, the line-edit widget sends ... developer may have caused in placing the widgets If the selected layout does not arrange the widgets as you intended, or if there are the wrong number of elements for the layout, the arrangement...

Ngày tải lên: 13/08/2014, 08:21

... GUI Design Using the Qt Designer Figure 3. 14: The resources example from page 57 in the Resource Editor of the Designer In addition, the list of resources displayed in the Designer is independent ... We will remember the filename for later operations, for example to save the file again when we need to To report the successful opening of the selected file, we use the status bar Its showMessage() ... needs to include the QLabel header file, of course, since the compiler would otherwise not recognize the interface of the class In the constructor we include code that generates a QLabel object...

Ngày tải lên: 13/08/2014, 08:21

... value to getOpenFileName() The following example requires the user to select the name of a file in which to save data Here, if the user selects the name of an already existing file, the program does ... explains to the user what sort of file is involved The file extensions listed in the parentheses act as the actual filter for the filenames contained in the directory The following filter, for example, finds ... changing their dimensions To keep the size of the dialog flexible, we could replace the setFixedSize() call with the resize() method, which also expects two integer parameters or a QSize parameter This...

Ngày tải lên: 13/08/2014, 08:21

... we later on for the events generated by the timers themselves In the timerEvent() method we first check whether the pointer to the event really is valid—just to be on the safe side Next, if the ... method expects the receiving object as the first parameter, followed by a QEvent To deliver it, postEvents() passes the event to the event() method of the target object The task of the event() method ... Finally, we make the selected files available to the user To this we define a method called selectedFiles() After the dialog ends—when the user clicks Open (the Designer has already linked the corresponding...

Ngày tải lên: 13/08/2014, 08:21

... key relations We can use these to replace the uninformative number shown in the department field with the name of the department, by making use of the departments table (see Table 9 .3 on page 261) ... deselected); requires the implementation of Qt::CheckStateRole in the model Element reacts to user requests Element has a selection status with three states (selected, not selected, partially selected); ... list view becomes the QListWidget, the counterpart to the QTreeView list view is QTreeWidget, and the table view QTableView is called QTableWidget in the independent version 8.11.1 Items Each entry...

Ngày tải lên: 13/08/2014, 08:21

... side of the pie graphics This causes the geometries for both parts of the widget to be dependent on the current widget size, and we proceed to draw the segments of the pie and the legend entries ... gradient has a center, a diameter, and a focus We specify the center as the real center of pieRect, and we also determine the diameter via pieRect() So that the gradient later “creases” the edge of ... determined by the following parameters: the widget height of the square of the pie,5 the longest entry in the hash table, the width of an x, the width of the legend square (fm) and the width of the × 10...

Ngày tải lên: 13/08/2014, 08:21