大约有 48,000 项符合查询结果(耗时:0.0606秒) [XML]

https://www.tsingfun.com/it/cpp/671.html 

如何判断GIF是否是动图 - C/C++ - 清泛网 - 专注C/C++及内核技术

...出现GIF。 char strGIF[3]; memcpy( strGIF, pbyImageBuffer, 3 ); string strImgType(strGIF); if ( strImgType.compare("GIF") == 0 ) ///< 动态GIF图,不支持 { cout << "can't process!" << endl; } 如何判断GIF是否是动图
https://www.tsingfun.com/it/cpp/1372.html 

Boost智能指针——shared_ptr - C/C++ - 清泛网 - 专注C/C++及内核技术

...首先让我们通过一个例子看看它的基本用法: #include <string> #include <iostream> #include <boost/shared_ptr.hpp> class implementation { public: ~implementation() { std::cout <<"destroying implementation\n"; } void do_something() { std::cout << "did something\n";...
https://www.tsingfun.com/it/cpp/2033.html 

atol 头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

... long l; char *lstr = "98765432"; l = atol(lstr); printf("string = %s integer = %ld\n", lstr, l); return(0); } atol 头文件
https://www.tsingfun.com/it/cpp/2177.html 

MFC中通过Tooltip类实现悬浮鼠标显示提示信息 - C/C++ - 清泛网 - 专注C/C++及内核技术

...case(IDC_YOUR_CONTROL1) strcpy(pTTT->lpszText, your_string1); break; case(IDC_YOUR_CONTROL2) //设置相应的显示字串 break; default: break; } return TRUE; } return FALSE; } 4、很重要的一点,要显示的控件...
https://www.tsingfun.com/it/os_kernel/534.html 

Linux Glibc幽灵漏洞允许黑客远程获取系统权 - 操作系统(内核) - 清泛网 - ...

...<< EOF #include <netdb.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #define CANARY"in_the_coal_mine" struct { char buffer[1024]; char canary[sizeof(CANARY)]; } temp = { "buffer", CANARY }; int main(void) { struct hostent resbuf; struct hostent *result; int herrno;...
https://www.tsingfun.com/it/bigdata_ai/1795.html 

Too many threads are already waiting for a connection - 大数据 & AI - ...

...Options(); parallelOption.MaxDegreeOfParallelism = 200; Parallel.ForEach<string>(strList, parallelOption, str => { ...... }); 二、修改MongoClientSettings -> MaxConnectionPoolSize增加最大线程池数量,但是不可超过服务端的最大限制。 三、增加服务端最大...
https://www.tsingfun.com/it/tech/1076.html 

优化InnerHTML操作 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...拼接字符串时还可以更快,详见:Fastest way to build an HTML string。 InnerHTML DOM JS
https://www.tsingfun.com/it/tech/1674.html 

C#泛型(List)中基类和子类 怎么转换? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...类,反之报错: 方法三: 函数参数使用泛型 public string Foo<T>(List<T> list) where T : BaseClass { ... } Foo(childList); 方法四: Foo(IEnumerable<BaseClass> baseList); Foo(childList);C# 基类 子类 转换
https://www.tsingfun.com/it/tech/2014.html 

vim 命令与快捷键 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...R:替换光标后的字符直到esc u:取消,上一步ctrl+z(undo) /string: 查找n next,N pre set:ic(忽略大小写) :%s/old/new/g:全文替换 :n1,n2s/old/new/g n1 to n2 :n1,n2s/old/new/c 询问 保存/退出 ZZ=:wq :wq! owner root :w dir/filename :r filename 倒入文件...
https://www.tsingfun.com/it/tech/2056.html 

ADO方式读取EXCEL数据存在致命BUG!!!!! - 更多技术 - 清泛网 - 专注C/C++及内核技术

...m ExcelDB As New ADODB.Connection Dim RS As ADODB.Recordset Dim S As String Set ExcelDB = New ADODB.Connection Set RS = New Recordset If Application.Version < 12 Then ExcelDB.Open "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False; Data Source=" & ActiveWorkbook.FullNa...