rdf semantics

I. The concept of HTML semantics 1, the main tag, has the title (H1~H6), the list (LI), the emphasis (strong EM) and so on 2, according to the content of the structure (content semantics), select the appropriate tags (code semantics) for developers to read, and to write more elegant code, while the browser's crawler and machine very well parse. Two. Semantic nece

function (statically member functions)1. Key features of static member functions: It cannot directly access the nonstatic members in class It cannot be declared as cosnt, volatile, or virtual It does not need to be called through class object--although it is called in most cases 2. Take the address of a static member function, and get the location in memory, that is, its address. Because the static member function does not have this pointer, its address type is not a "poin

data members place the "individual class object" of interest, and the static data members place the "whole class" of interest.The C + + object model nonstatic data members as much as possible with the optimization of spatial optimization and access speed, and maintains compatibility with the C-language struct data configuration. It stores data directly in every class Object. For inherited nonstatic data members (either virtual or nonvirtual base class). But there is no compulsion to define thei

HTML5 semantic tag practices (blog pages) and html5 SemanticsA blog page is modeled after HTML5 + CSS3. The overall effect layout is as follows: The page layout is based on html5 elements. Therefore, it is important to familiarize yourself with HTML5 elements before you start, and then check whether its semantics is suitable for your layout. The HTML5 Structure It is very important that when writing HTML5 code, do not simply replace the Is still a

Explanation of semantic inline elements in HTML5 and html5 Semantics Explanation of semantic inline elements in HTML5Time tagThe time element represents a time value, for example, p.m., EST, limit l 23,200 7. For example:Example Source Code:The time element helps the browser and other programs identify the time in the HTML page. It does not apply any specific format to element content. However, each time element should have a datetime attribute, which

Dialog #28: contracts, promises, and mere Semantics Like most days, I started my work that day-with fresh coffee in my square room, I was receiving morning emails before I started writing code. Very strange. On this day, guru did not suddenly appear behind me. In fact, I accidentally heard it happen to another person. I was sitting in front of my desk quietly working, and heard the time from my colleagues nearby to press the keys. "It's time," g

Null Semantics Note: The first example below describes the query of employees whose ReportsToEmployee is null. The second example uses Nullable 1. Null Find all employees not affiliated with another employee: var q =from e in db.Employeeswhere e.ReportsToEmployee == null select e;2. Nullable Find all employees not affiliated with another employee: var q =from e in db.Employeeswhere !e.ReportsTo.HasValueselect e;3. Nullable Returns the employee ID o

yellow sections are relatively good results. Figure 2-1 B is a query that can express the query semantics, but the existing graph database query can only find the green part or one. The reason is that the node information does not match, and the original query does not support semantic conversion or only supports one conversion. Figure 2-1 Figure database G The problem solved in this article can be described as: Given a query Q and database G, find

Today, when I made a cross-Server query for two database servers, I encountered a Problem. "error: 7405 16 heterogeneous query requires that the ansi_nulls and ansi_warnings options be set for the connection. This ensures consistent query semantics. Please enable these options and then resend the query" Solve the problem and make a record here Problem description: The OpenDataSource method is used in the stored procedure to call a table on another

The reversal of the escape character is in the Org.apache.commons.lang package Public Static void throws unsupportedencodingexception { = "http://www.xj.10086.cn/app?service=page/operation. gprsdiscntdisposeamp;listener=initpageamp;id=2014092000003483 "; = stringescapeutils.unescapexml (URL); System.out.println (URL); }Results:http://www.xj.10086.cn/app?service=page/operation.GprsDiscntDisposelistener=initPageID=2014092000003483Reversal

active position to the initial position at the beginning of the next logical page.\ n( newline ) moves the active position to the initial position of the next line.\ r( enter ) moves the active position to the initial position of the current row.\ t( horizontal tab ) moves the active position to the next horizontal tab position on the current line. If the active location is or crosses the last position defined by the Horizontal tab position, then the behavior of the display device is unspecifie