r in nutshell

the different teams in the interior, but also the third-party function modules. As early as 09, they used a static resource management scheme (static Resource Management) to manage the js/css static files required for a feature: In a nutshell, it is the HTML fragment that is required by the page to decide whether to load and package the functions required by the JS and style. This means that the static file needs to be available after

The browser's working mechanism, in a nutshell, is the process of communicating between a Web browser and a Web server over an HTTP protocol. Therefore, the handshake between C/S protocol is the HTTP protocol. The following is the approximate process before the browser is received to begin rendering:From the browser address bar to start the request link, the browser through DNS resolution to the IP address of the domain name map, after successful brow

What is JSONIn a nutshell, JSON is a text-based data exchange, or a data description format, and you should choose whether or not he should first focus on the advantages it has.The advantages of JSON:1, based on plain text, cross-platform transmission is extremely simple;2, JavaScript native support, background language almost all support;3, lightweight data format, occupies very few characters, especially suitable for internet transmission;4, readabi

child element of this type, with no child elements of the child element;Can use: not to implement a reverse selection: Only-child:Select an element that has only one child element;If you remove: p in front of the only-child, that lonely span will also apply the style;You can also use: not to reverse the selection,In a nutshell, the style is applied to the p which has the sibling node;: Nth-child (N):Select the nth child element, which can be combined

Change an internship unit, things temporarily not much, learn a new technology, brush the interview questions, the days have been so.The programming idea of getting into touch with Node.js,node today is different from all the voices I've learned before, and in a nutshell, node. jsnode. JS is a development platform that lets JavaScript run on the serverTutorials Online, personal habits are written from the grassroots to look at, after all, they write m

reuse of individual modules.AOP, on the contrary, uses a technique called "crosscutting" that splits the encapsulated object interior and encapsulates public behavior that affects multiple classes into a reusable module, called "Aspect", which is the facet . The so-called "aspect", in a nutshell, is to encapsulate the logic or responsibility that is not related to the business, but for the common invocation of the business module, to reduce the dupli

"); System.out.println (i7 = = i8);//falseinteger I9 = 3;integer i10 = 3; System.out.println (I9 = = i10);//trueinteger i11 = 137;integer i12 = 137; System.out.println (i11 = = i12);//falseFor the basic data type, if within a byte, (that is, 128 ~ 127), once wrapped into an integer object, it will be placed in a buffer pool, when the next time you need to wrap the integer into an integer object, it will first look for the buffer pool there is no such object, Some change to take it directly. Smal

picture to describe it as a whole:First, the six principles of design pattern1. Opening and closing principle (Open Close Principle)The open and closed principle is to say to the expansion opening, to modify the closure . When the program needs to expand, can not modify the original code, to achieve a hot plug effect. So a nutshell is: In order to make the program good extensibility, easy to maintain and upgrade. To achieve this, we need to use inter

1) using idea to develop a program sometimes prompts "Java Heap space error", indicating that the Java heap memory is not configured by the idea default, and the program requires more heap memory.2) heap and non-heap (non-heap) memoryAccording to the official statement, "Java virtual machines have a heap, the heap is a runtime data region, and all class instances and arrays of memory are allocated from here." The heap is created when the Java virtual machine is started. "" The memory outside the

A definition of an arrayAn array can be understood as a huge "box" in which multiple types of data can be stored sequentially, such as arrays that can define an int type.Scores stores scores of 4 students.The elements in the array can be accessed by subscript, and the subscript starts at 0. For example, you can get the first element in the array by scores[0] 76,SCORES[2] can be taken to the third element of 92.Two operation of arrays requires only four steps:1 declaring an arraySyntax: data type

programming algorithm is to solve the problem from the minimum problems, and the solution of the larger problem depends on the solution of the small problem. In a nutshell, with the solution of the small problem, the problem is solved gradually, until the original problem is solved. Using dynamic programming algorithm to solve the maximal sub-segment and the idea: in order to find the i=0,1,2,..., n-1 end of the sub-section of the maximum and (in the

int type decltype (num) num2 = num; // num2 is also of type int return 0 ;} Here Decltype gets the num type, and then uses this type to define NUM2 to do a copy of Num. Auto and Decltype also have a classic use case, see the following example:Template -decltype (t1 + T2) { return t1+ T2; }Here is a template to calculate the addition of two variables, if the two types T1 and T2 different words, T1+T2 type will be determined by the compiler, so that the use of decltype can get the

content that was sent earlier, and is used for client-side validation (symmetric encryption). 5. The two will then communicate through symmetric encryption. Explanation: Why use 3 random numbers. A random number is required for both the client and the server, so that the generated key will not be the same every time. Because the SSL protocol certificate is static, it is necessary to introduce a random factor to ensure the randomness of the negotiated key, three random numbers through a key expo

block of CSS is not well defined, when I open the official demo CSS, and then chore, so many, so messy code. Function of the powerful, must face the difficulty of the use of upgrading, estimated this is for the expert users, I wait for small white or slip away. Studied for two or three hours and died. Turned to Coin-slider to walk.First on the Internet to search for relevant information, a predecessor has written a tutorial, and did a demo, download down to see, the effect is very good, the cod

have a certain Java IO base, then read the FileReader class. I suggest that you look at Java in a nutshell, which has the entire Java IO architecture diagram. Java IO class Library, if you do not understand its interfaces and inheritance relationships, reading is always confused.Java IO Package, I think is the most elegant use of inheritance and interface cases. If you are an architect in the future, you will always be dealing with it, such as the de

escape all characters in a string that might be interpreted as regular operators.>>> re.escape ('www.python.org')'www\\.python\\.org '>>> re.escape ('but where is theambiguity')' but\\ where\\ is\\ the\\ ambiguity'Matching objects and GroupsIn a nutshell, a group is a submodule that is placed inside parentheses, and the number of groups depends on its left bracket. Group 0 is the entire module, so in the following mode:' There (is a (wee) (Cooper))

safe, in terms of software development, very unfavorable. Iterator it = Alist.iterator (); while (It.hasnext ()) {String str = (string) it.next (); str = Str.touppercase (); System.out.println (Str.length ());}} private static void Demo2 () {arraylistCall Demo1 (), put the time with two different types of elements, compile without error, when the output, because no generics, so to strong turn, the problem appears in this, the int of the 8 strong to the string will be error, that is, run-time er

a certain Java IO base, then read the FileReader class. I suggest that you look at Java in a nutshell, which has the entire Java IO architecture diagram. Java IO class Library, if you do not understand its interfaces and inheritance relationships, reading is always confused.Java IO Package, I think is the most elegant use of inheritance and interface cases. If you are an architect in the future, you will always be dealing with it, such as the develop

what is MVC framework? Here I briefly explain, want to know in detail MVC the small partners can on the Baidu Encyclopedia, or find the corresponding books, carefully study and understand, but to illustrate the point is that fully understand MVC It's not an easy thing to do. MVC are all called Model View Controller , is the model - View - the abbreviation of the controller, a software framework mode, the popular point is that the application input, processing and output decoupling, so that M a

very nice symbols are the state we're looking for. That is, State D (I,J) represents the maximum value that can be achieved in a backpack with the remaining volume J for the first I gem. Above so many words, in a nutshell is: according to sub-problem definition state! If you find a problem, the state will surface. The maximum value we will eventually solve is D (n, C): The Top N Gems (0,1,2...,n-1) are loaded into the backpack with the remaining capa