the beginning of the program to the end of the program's run, but its scope is only within the function that defines it.A static local variable is initialized when its function is executed, and then when the function is executed, the static local variable is no longer initialized, but the last value is preserved.externThe external storage type, the extern type global variable, can be used not only in the defined source program files, but also in other source file functions. If the global variab
set member classes to public unless they are part of an interface
Non-members, static members, and global functions
It is recommended to use a non-member function or a static member function in a namespace instead of a global function.
Local variables
Use local variables as much as possible in the smallest domain, and initialize them at the time of declaration.
C + + supports declaring local variables anywhere in a fun
C # webbrowser Development Guide
Reference Unit mshtml;
Path: C: \ windows \ assembly \ GAC \ Microsoft. mshtml \ 7.0.3300.0 _ b03f5f7f11d50a3a \ Microsoft. mshtml. dll // different version paths
1. How to Use Webbrowser to obtain the full source code of a webpage
1. framework not included
String s = WB1.DocumentText;
2. Framework included
IHTMLDocument2 doc
. Use assertions to catch illegal situations that should not occur. Do not confuse illegal situations with error conditionsThe difference between the latter is inevitable and must be dealt with.Recommendation 2. At the entrance of the function, use assertions to check the validity of the parameters (legality).7th Chapter Memory Management1. Overloading with overrides, the member function is overloaded with features:(1) The same range (in the same class);(2) The function has the same name;(3) dif
the browser, not by markup or content, is generated, and the list tag is the generated contentinserting a build into a document can be used : before:after pseudo-elements these pseudo -Elements place the generated content before and after the content of an element based on the contents attributeIn addition to list markers The rest of the generated content is within the elementThe generated content inherits values from the elements associated with it, such as colorSpecify the content of the bui
Lambda expressions are anonymous functions that can be used to create a delegate or expression directory tree. By using lambda expressions, you can write local functions that can be passed as parameters or returned as function call values. Lambda expressions are particularly useful for writing a LINQ query expression.
To create a Lambda expression, specify the input parameter on the left side of the lambda operator => (if any), and then enter the expression or statement block on the other side.
Bool? The data type that can be null can contain three different values: True, false, and null. So bool? Type cannot be used in conditional statements, such as if, for, or while. For example, this Code cannot be compiled and a compiler error cs0266 will be reported:
bool? b = null;
if (b) // Error CS0266.
{
}
This is not allowed, because the meaning of null in the context of the condition is unclear. To use bool? In a condition statement ?, First check its hasvalue att
You can store multiple variables of the same type in an array data structure. declaring an array by specifying the type of its elementsType []arrayname;1 classTestarraysclass2 {3 Static voidMain ()4 {5 //Declare a single-dimensional array one-dimensional arrays6 int[] Array1 =New int[5];7 8 //Declare and set array element values9 int[] Array2 =New int[] {1,3,5,7,9 };Ten One //Alternative Syntax A int[] Array3 = {1,2,3,4,5,6 }; - -
memory fileoff_t represents the offset of the content of the image from the file headerCall failed return-1, otherwise the image memory start address is returnedNote You need to open a file in a process to map it * * *2.Modify the protection value of the memory image protint Protect (constvoid *addr,size_t length,int prot);Success returns 0, error returns-1, and errno is placed.3.Write memory image to external memoryint msync (constvoid *start,size_t length,int flag); flag parameter options ar
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.