First, we will introduce the Link Library: The Link Library is divided into two types: Dynamic Link Library and static Link Library.
LIB is a static Link Library. It is a static link during program compilation and connection. Its file format is. lib. That is, when the program uses a static link library ,. functions in the lib file are linked to the final executable file, because all the content required by the application is copied from the library, therefore, static
shared with the system.After the dynamic link library is shared by the system, run main and the results are as follows:Using the GCC compiler to generate a static link libraryUse an example to illustrate how to generate a static link library in the GCC compilerHello.hhello.cMain.cFirst gcc–c hello.c file generation hello.oThen use HELLO.O to generate a static link library, usingAr–rc–o LIBHELLO.A hello.oOr use AR rcs–o libhello.a hello.oThen use the static link library to compile the link main.
status is in a change that branch master has not yet staged for submission: (Using"git add ."update the content to be submitted) (using"git checkout-- ."Discard workspace changes) Modified: Readme.txt Modification has not yet joined the commit (using"git add"and/or"git commit-a")//git diff to see what's changed[Email protected]:/home/ubuntu/joe/learngit#git diff Readme.txt diff--git A/readme.txt b/Readme.txtindex F7249b8. 2FDF0C4100644---A/Readme.txt+ + + breadme.txt@@-1,2+1,2 @@-Git is a ver
The test scenario, TEST,LIB1,LIB2,DLL1,DLL2, is divided into the following four scenarios:1, Test->lib1->lib2LIB1 compiles its own code to the LIB2 part, only needs to lib2 the header file, implements the code for LIB2, and associates with the placeholder.When the test connection is generated, the LIB1 code implementation is included, recursively, and the code implementation of the associated LIB2 in the LIB1 is included.LIB1 and LIB2 are no longer required to run test.2, Test->lib1->dll2LIB1 co
In the masterProgramThe global variables in the dynamic link library are correct and undeniable, but this requires the dynamic library to be added when the program compiles the link, and use extern to declare the variable in the program to be used, which does not actually achieve the essential purpose of the dynamic library (to call it again when used); this is actually not a big problem, if you only use it in one process, this article mainly discusses the use of dynamic library global variables
Recommendation of common Python libraries and common Python libraries
IPython + ptpython, perfect experience
First, install
Pip install ipython ptpython
Then use
Ptipython
What are the benefits?
1. IPython is a very powerful Python Enhancement Tool.2. ptpython provides auto-completion functions similar to IDE3. When you input pyipython in the command line, the two functions are combined, which is ext
How can I use composer's autoload to automatically load the function libraries and class libraries compiled by myself ?, Composerautoload
1. Run the command composer init to generate the composer. json file, and edit the autoload option as follows:
There are two main options: files and psr-4.
Files is the function library that requires composer to automatically help us load (excluding classes), as long as t
3 methods for installing third-party libraries in Python, 3 methods for installing third-party libraries in python
[Method 1]: Use setuptools to install the python module.
First download http://peak.telecommunity.com/dist/ez_setup.py
NOTE: It is best to download a setuptools version 15.2, which contains ez_setup.
Run python ez_setup.py
D:\work\installation\setuptools-15.2\setuptools-15.2>python ez_setup.py
specify a weak link symbol, and the other object file with the link has its definition, otherwise it is specified with a system-specific default value.
Note the points:
-C is always available for C + + compiled object files. Remember that there are overloads in C + +? To differentiate between overloaded functions, the C + + compiler appends information such as function return values/parameters to the function name to form a mangle symbol, which, when listed with this option, does
Create a static libraryBuild four file Bin (executable file), Lib (library), include (header file), src (release source file)Here's the cumming for addRun in src file1) gcc-c ADD.C//compile ADD.C source file to generate ADD.O target file2) AR crsv. /LIB/LIBADD.A ADD.O//Archive The target file *.o, generate the LIB*.A, and put the generated file in Lib3) Gcc-o main main.c-l (Larger love dolls, the path of the library). /lib–l (Lowercase love puppet, library named Add) add–i (uppercase I): /includ
Create a static libraryBuild four files Bin (executable file), Lib (library), include (header file), src (release source file)Here's the cumming for addExecute in src file1) gcc-c ADD.C//compile ADD.C source file to generate ADD.O target file2) AR crsv. /LIB/LIBADD.A ADD.O//Archive The target file *.o, generate the LIB*.A, and put the generated file in Lib3) Gcc-o main main.c-l (Larger love dolls, the path of the library). /lib–l (Lowercase love puppet, library named Add) add–i (uppercase I): /i
Linux has two types of function libraries, dynamic libraries and static libraries
Static Library:
This type of library is typically a file with a suffix of. A, and a file compiled with a static library function is larger because all of the data in the library is integrated into the target code.
The compiled execution program does not require external function
件#include 函数原型FILE *tmpfile(void);返回值成功为文件指针出错为NULL为临时文件创建一个文件名头文件#include 函数原型char *tmpnam(char *s);返回值指向唯一路径名的指针Fcntl () function function Manipulation file description such as copy, get/Set file descriptor flag, get/Set file status flag, management Recommendation file Lock file #include #include function prototype Span class= "Hljs-keyword" >int fcntl (int FD, int cmd); int fcntl (int fd, int cmd, long arg); int fcntl (int FD, int cmd, struct flock * Lock ); Return value succ
the compiler. It is not necessary to use the import statement in the program. It contains classes and interfaces that are necessary for all actual Java programs.
Object class
Math Class (Math)
Data type class
Thread class
String Class (String class and StringBuffer Class)
Systems and Runtime classes (System class and runtime Class)
Error and exception handling classes (Throwable, Exception, error)
Procedure Class (process)
java.util bag1. Date classes,
"CMake" is executed. The Times SSL did not find a related error because SSL was not installed on this computer. Self-Baidu SSL installation method.If you do not need to enable the SSL (secure connection) feature, open the Home directory(/home/kylin/test/rabbitmq-c-... ), locate CMakeLists.txt, open and find Enable_ssl_support, and change the "on" after "on" to "Off" (option (enable_ssl_support "ENABLE SSL support" off), Then delete all files under the build directory (be sure to delete) and sta
Smartwin ++
The C ++ GUI library that complies with the BSD license protocol is built on Windows APIs, but can still be used on Linux/xnix by using winelib. It also supports Pocket PC and Windows CE-based applicationsProgram...
Xclass
The xclass library is a C ++ GUI toolkit in X Windows. It is based on xlib and consists of a set of components, from simple components to complex ones, including many common dialogs. The components have the appearance style of MS Windows.
Windows ++
Tween. js can generate js animation libraries for smooth animation effects and tween. js animation libraries.Tween. js is a js animation library that can generate smooth animation effects. Tween. js allows you to smoothly modify the attribute values of an element. It can generate various CSS-like animation effects by setting. Related jquery plug-ins include the powerful jQuery animation library plug-ins of snabbt. js and the powerful jQuery animation
Introduction to common JSTL tag libraries, jstl tag LibrariesRecently, JSTL labels are often used in development, which is quite useful. Here we will introduce several common JSTL labels for your reference. Let's review and review your knowledge!
The first is the if in the process control label, which is used a lot. Specific statement:
For example, if condition 1 is true, a button is displayed, and if condition 2 is true, a hyperlink is displayed:
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