... 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 ofthe ... The a’s and the b’s are called, respectively, the upper and the lower parameters ofthe series The b’s are not permitted to be nonpositive integers or the series will obviously not make sense...
... (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 3.34. 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 3.33.34. 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...
... 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 3.33 .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 ofcomputer ... 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...
... ofthe 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: 3433 How will this affect the final score? The score is the length ofthe 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...
... the names ofthe classes they describe, Qt also provides header files for its libraries Each of these files contains the interface descriptions of all ofthe classes of a library; the name ofthe ... whether the signal/slot connections have the desired effects The Designer also has a mode that specifies the tab sequence ofthe 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...
... represent the situations where effect 93 is present Figure 4. 18 represents the remainder ofthe 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 ofthe graph The cause nodes are listed vertically on the left side ofthe sheet of paper; the effect ... in the table represent “don’t care” situations (i .e. , the state ofthe cause is irrelevant) or indicate that the state of a cause is obvious because ofthe states of other dependent causes (e. g.,...
... in the 39 Artof Creative Thinking 1-1 34 : Creative Thinking 3 /4/ 07 10 :37 Page 40 TheArtof Creative Thinking human face the same sort of expression ofthe process of growth and struggle as he ... make detailed observations For they are the materials for future creative thinking 42 Artof 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, ofthe marvellous structure of reality It is enough if one tries merely to comprehend a little of this mystery every...
... boundary The next step is the development ofthe graph The cause nodes are listed vertically on the left side ofthe 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) TheArtof 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...
... the names ofthe classes they describe, Qt also provides header files for its libraries Each of these files contains the interface descriptions of all ofthe classes of a library; the name ofthe ... 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...
... whether the signal/slot connections have the desired effects The Designer also has a mode that specifies the tab sequence ofthe widgets; that ✞ ☎ is, the order in which the user accesses the individual ... for example, the hexChanged() signal ofthe decEdit object in a dialog to the setDec() slot ofthe 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...
... GUI Design Using the Qt Designer Figure 3. 14: The resources example from page 57 in the Resource Editor ofthe 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 ofthe 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 ofthe class In the constructor we include code that generates a QLabel object...
... 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 ofthe dialog flexible, we could replace the setFixedSize() call with the resize() method, which also expects two integer parameters or a QSize parameter This...
... 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 ofthe target object The task ofthe 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...
... key relations We can use these to replace the uninformative number shown in the department field with the name ofthe department, by making use ofthe 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...
... side ofthe pie graphics This causes the geometries for both parts ofthe widget to be dependent on the current widget size, and we proceed to draw the segments ofthe 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 ofthe square ofthe pie,5 the longest entry in the hash table, the width of an x, the width ofthe legend square (fm) and the width ofthe × 10...