pmbok 6th

Put a T-shirt on for naked humans Wear pants for people wearing T-shirts Put on sneakers for people wearing T-shirts and baggy pants. So, a decorative model is a way to add more functionality to an already functional dynamic, placing each function to be decorated in a separate class, and having the class wrap the object it is decorating, so that when special behavior is required, the client code can wrap the object in order, using the adornment function, as needed, at run time.

distinguish between these, kinds of equality. One of the "identical" when talking about equality of references and the word "equal" when Talking about a distinct objects that has the same content. To test-nonidentical objects for equality, pass one of the them to the Equals () method of the other: All objects inherit a Equals () method (from Object), but the default implementa‐tion simply uses = = to test for identity of references, not equality of content. A classThat wants-to-allow ob

* *......}Collection Interface: Public Interface extends　　 Some ways to iterableList Interface: Public Interface extends Some methods of collection { /*** List */ ...}Multiple inheritance of interfacesThe inheritance of the interface is a big difference from the inheritance of the class, which is that the interface can inherit more, and the multiple inheritance is similar to the way the class implements multiple interfaces: Public Interface extends Sports, EventJav

be shared between files, and the internal name of the link is shared only by functions in one file.3. Using the keyword register, it is recommended that the compiler use CPU registers to store automatic variables, which are designed to increase the speed of accessing variables. (Same as the previous usage of auto, c++11 obsolete).4. Static storage persistence variables provide 3 features: external linkage (external declaration of code blocks), internal chaining (code block external static decla

; ‘{:10.1f}‘.format(3.24)‘ 3.2‘ Tip When formatting a string, if there is only one argument, the placeholder index can be omitted. Summary of this chapterThis chapter focuses on data types in Python, where the reader needs to focus on numeric types and string types, familiarity with the conversion of numeric types to each other, and conversions between numeric types and strings.Companion videoHttp://edu.51cto.com/topic/1507.htmlSupporting source codeHttp://www.zhijieketang.co

entire element set of the largest can only be ranked LGN + 2k + 1 large, because the element separated by 2 must have a different ancestor, and this ancestor must exist in front of the smaller element.So a distribution is constructed by greed:Because the internal node also has N/2, so the unassigned ancestors have N/4, so the lowest element size position in the N/2 after the large element has N/6, consider the N/2 after the big because, after the N/2 times the minimum value, these rows will rem

6th of the design pattern-iterator mode (Java implementation)　"I'm out of date, let's not talk about it, now Java comes with an iterator, what is there to say?" "Although there are already, but specific details?" Know the mechanism of implementation is not beautiful? "All right, OK." (The iterator promised down sullen.) The author eats the small cage bag, the suck smack way: Hum, wants to be lazy, the window has not ~).Self-Introduction to the iterato

1, write the Java program, the two-dimensional array of rows and columns in the cross-tune display. Such as:1 2 3 The results shown are: 1 4 74 5 6 2 5 87 8 9 3 6 9 Packagesix; Public classSixoneegiht { Public Static voidMain (string[] args) {intarr[][]=New int[][]{{1,2,3},{4,5,6},{7,8,9}}; System.out.println ("Original two-dimensional array:"); for(inti=0;i){ for(intj=0;j//traversing a one-dimensional arraySystem.out.print ("\ T" +Arr[i][j]); } System.out.println (); } S

absolute value of the last item is not greater than the given precision EPs.(2) Flowchart(3) Source code(4) Experimental analysisNote that punctuation is English half-widthPTA Submission List2. Guess the number game(1) TitleGuess the number game is to make game console randomly produce a positive integer within 100, the user enters a number to guess, you need to write a program automatically compare it with the randomly generated guessed number, and the hint is big ("Too big"), or small ("Too s

"History of the most pit dad's Game 2 Raiders 6th" 1, first click on the pig's ear, and then click and hold it to the left to move, two pig position will be interchangeable; 2, the last click on the ear of the gray pig can pass. "History of the most pit dad's Game 2 Raiders 8th" 1, using the lower left corner of the button, the aircraft moved to the bottom of the alarm clock, "fire" attack the alarm clock, it will break the time to stop; 2, t

6th Chapter when C + + falls in love with object-oriented6.1 from structured design to object-oriented programming6.1.1 Structured programming of "top-down, gradual refinement"6.1.2 Object-oriented programming6.1.3 Object-oriented three cornerstones: encapsulation, inheritance, and polymorphismClass 6.2: When C + + falls in love with object-oriented6.2. Declaration and definition of Class 16.2.2 Creating objects using classes6.2.3 Constructors and des

do some more type checking if(t!== "Object" t!== "function")ThrowTypeError (); functionF () {};//Define a dummy constructor function.F.prototype = p;//Set its prototype property to P. return Newf ();//Use f () to create an "heir" of P.} 3. Query and settings for attributes1. Object as an associative arrayJavaScript objects are associative arrays, the difference between point access and parenthesis access2. Inheritance3. Property Access Errorvar len = Book book.subtitle book.subti

operator, however, means that the original address (arr[2]) is de-referenced instead of the incremented new address, so the value of *pt++ is arr[2], or 25.4,However, the value of PT will be the address of arr[3] When the statement is executed.#include"stdafx.h"#includeintMain () {using namespacestd; Doublearr[5]={21.1,32.8,23.4,45.2,37.4}; Double*pt=arr; ++pt; intA; Doublex; coutEndl; coutEndl; coutEndl; coutEndl; X=*pt++; coutEndl; CIN>>A;}Note: The pointer increment and decrement follow the

is a priority queue of a very good implementation. Through the heap, the discretionary operation on the priority queue can be implemented in the LGN time.3. Exercise 6.5-8 Solution*/* Introduction to algorithm sixth Exercise 6.5-8 * * Remove the first element of the K list as an array, constituting a minimum heap, the top element of the heap is the minimum * each time the top element of the heap is inserted at the end of the new linked list, and then the next element of the linked list of that

system bytecode conversion that can be done easily with Javassist. Combining this article with the previous two articles, you should have a solid foundation for implementing your own aspect-oriented transformations in your Java application, either as a separate compilation step or at run time.To better understand the power of this approach, you can also analyze the JBoss Aspect oriented Programming Project (JBOSSAOP) built with Javassis. JBOSSAOP uses an XML configuration file to define all the

question 2 and reason, understand the situation ... Pairing and mutual evaluation other (sentiment, thinking, etc., optional)XxxXxxLearning progress Bar lines of code (new/cumulative) Blog Volume (Add/accumulate) Learning Time (new/cumulative) Important Growth Goal 5000 rows 30 Articles 400 hours First week 200/200 2/2 20/20 Second week 300/500 2/4

tiles.index.definition whose layout template is/layout/index_layout.jsp.The tiles.index.definition is defined above and the body is added with a value of/snippet/index_body.jsp page.4. Using composite layouts? The layout of the page has been segmented and combined. Now apply definition to build a Request response page./example/index.jsp5. Start the server and access the/example/index.jspPage Display effect:Next look at the source code of the page: In this example, the body of the layout index

from the inheritance range. If you're not sure about this, keep the following two rules in mind: Use Object.Method to get a meaningful object in the method as the this value. For any other requirement, use the arrow function, because the function does not have its own this value, so it inherits the this value of the enclosing range. Restrictions on using Arrow functionsSome restrictions to note when applying the arrow functions: The arrow function does not have a para

removed from the array, and if the second argument is omitted, all elements are deleted from the starting point to the end of the array. Splice () returns an array of deleted elements that return an empty array if no elements are deleted.var a=[1,2,3,4,5,6,7,8];a.splice (4); // return [5,6,7,8],a to [1,2,3,4] // return [2,3],a to [1,4] // return [4],a to [1]Splice () The first two parameters specify the array elements that need to be deleted, followed by any parameters that specify the eleme

system between each encoding, it can not recognize each other, will produce garbled.2, file storage, transmission, cannot be Unicode (because Unicode is 32 bit too large) can only be utf-8 utf-16 gbk,gb2312,asciid, etc.For English:STR: representation: s = ' Alex 'Encoding method: 00000001 UnicodeBytes: representation: s = B ' Alex 'Encoding method: 00000000 Utf-8, GBK ....For Chinese:STR: representation: s = ' China 'Encoding method: 00000010 UnicodeBytes: expression form: s = B ' \xe4\xb8\xad\