lightbox definition

Recently began preparing for a lab study while documenting some of the programming trivia points encountered. Today when testing the SVD decomposition of matrices, we need to define the size of the rows and columns of the matrix, and I used to define these two variables with a macro definition, and when I run, I start thinking about what the difference between the macro definition and the constant is.Refer

A program usually uses a constant value to define some relatively fixed and practical values. For example, you want to define a playing card category. Playing cards have two attributes: Color and number. However, the color is only red peach (Red Heart), square, black plum, and black peach, in this case, you can define four constants to represent the four colors respectively. The benefit of this definition is that each time you assign a value to a colo

water function, you can meet the bubble surface and cooking two process of boiling water function needs, both time and effort. Since the function has so many benefits, let's look at how to define and use the function.Figure 5-1 Wrapping the program into a box, divide and conquerDeclaration and definition of the 5.1.1 functionTo use variables to express data in a program, we must declare and define the variables before we can use them. Similarly, to u

One.#define是C语言中提供的宏定义命令, the main purpose is to provide programmers with certain convenience in programming, and to a certain extent, improve the efficiency of the program, but students often do not understand the nature of the command in learning, always create some confusion here, in the programming of the misuse of the command, To make the program run inconsistent with the intended purpose, or to read the program written by others, the results of the operation to understand the error, which

Macro definition of C Language notes (1) Symbolic Constants Macro definition is a replacement strategy in C language, that is, using preprocessing commands # define equals a string of (lengthy) texts with a name (macro, then you can batch use Macros in the source code. In the preprocessing phase, replace the macro in the source code with the original text. For example, in the source code: #define PI 3.1

Note: (1) Environment construction: Activiti Custom process Spring Integration activiti-modeler5.16 Example (i): Environment construction(2) Create process Model: Activiti custom process Spring Integration activiti-modeler5.16 Instance (ii): Create process Model(3) Process Model list show: Activiti custom process Spring Integration activiti-modeler5.16 Instance (iii): Process Model list Show1.maven Guide Package and some of the basic spring configuration and no changes in the previous, it is sti

This example describes the Python array definition method. Share to everyone for your reference, as follows: There is no data structure for the array in Python, but the list is much like an array, such as: a=[0,1,2] At this point: a[0]=0, A[1]=1, a[[2]=2, but begs the question, that is, what if array a wants to define 0 to 999? This may be achieved by a = range (0, 1000). or omitted as a = range (1000). If you want to define a 1000 length, the ini

This example describes the Python array definition method. Share to everyone for your reference, as follows: There is no data structure for the array in Python, but the list is much like an array, such as: a=[0,1,2] At this point: a[0]=0, A[1]=1, a[[2]=2, but begs the question, that is, what if array a wants to define 0 to 999? This may be achieved by a = range (0, 1000). or omitted as a = range (1000). If you want to define a 1000 length, the initi

Learning Essentials:1, general definition of function address and typedef simplification definition;2, access to the function address;The 3,a function address is passed as the B function parameter;Functions are stored in the code area of memory, and they also have addresses. If we have a function of int test (int a), then its address is the name of the function, asArray, the name of the array is the startin

Transferred from: http://www.phpthink.cn/html/221.htmlIn complex association operations, if you want to add optional attributes to the association definition, we can take a fully defined approach. The fully defined format is: protected $_link = Array (' Associative table name 1 ' = = Array (' The table is associated with the property 1 ' = ' = ' = ' = ' = ' = ' = ', ' The table is associated with the property n ' = ') Define ', '), ' Association table

defined in define ():define({ name: "john", age : 20, sex : "femal"});Comments: This situation is not very useful, it is generally used for simple data simulation. After the module is loaded, the parameter injected in the callback function is the key-value pair object, which is:{ name: "john", age : 20, sex : "femal" }Function-DefinedIf a module does not have any dependencies, but requires a function to do the setup work, define the function in define () and pass it to define ():define(fu

This article transferred from: http://www.cnblogs.com/jaxu/p/5595451.htmlUsing MongoDB in node. JS is a mongoose. Suppose there is a definition of the following mongoose schemas:var New Mongoose. Schema ({ biz:string, name:string, tradetype:string, totalfee:number, transactionid:string, createtime: { type:date, default: Date.now }, updatetime: { Type:date, default: Date.now }}, { false});We wan

MySQL Gets the field definition for the specified table (assuming the table name is MyTable):DESCRIBE mytableGets the field definition for the specified table in MySQLServer (assuming the table name is MyTable): select syscols.name as column_name,st.name as data_type,syscomm.text as data_default,syscols.isnullable as NULLABLE from syscolumns syscolsleft join Systypes St on syscols.xusertype=st.xusertypeleft