摘要：
java: simpledateformat simple = new simpledateformat("yyyy-mm-dd hh:mm:ss" , locale.china); system.out.println (simple.format(new date()));
javascript:<script > var s ="-&quo......
摘要：以下是经过我测试的，我在vb中建一个class，然后用c#引用，最后得出这个对应表vb c#currency decimaldouble doubledate system.datetimeint shortlong intobject objectsingle floatstring string
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直接用WinSock API 发E-mail.unit smtp_connections; 【程序编程相关:
看实例学php正则表达式】 【推荐阅读:
Struts中logic:iterate】//------------------------------------------ 【扩展信息:
操作系统安全状态检查之银行家算法】 //定义单元 //--------------------------------------------- interface uses classes, stdctrls; const winsock = ´wsock32.dll´; internet = 2; stream = 1; fionbread = $4004667f; winsmtp = $0001; linuxsmtp = $0002; type twsadata = packed record wversion: word; whighversion: word; szdescription: array[0..256] of char; szsystemstatus: array[0..128] of char; imaxsockets: word; imaxudpdg: word; lpvendorinfo: pchar; end; phost = ^thost; thost = packed record name: pchar; aliases: ^pchar; addrtype: smallint; length: smallint; addr: ^pointer; end; tsockaddr = packed record family: word; port: word; addr: longint; zeros: array[0..7] of byte; end; function wsastartup(version:word; var data:twsadata):integer; stdcall; far; external winsock; function socket(family,kind,protocol:integer):integer; stdcall; far; external winsock; function shutdown(socket,how:integer):integer; stdcall; far; external winsock; function closesocket(socket:integer):integer; stdcall; far; external winsock; function wsacleanup:integer; stdcall; far; external winsock; function bind(socket:integer; var sockaddr:tsockaddr; addrlen:integer):integer; stdcall; far; external winsock; function listen(socket,flags:integer):integer; stdcall; far; external winsock; function connect(socket:integer; var sockaddr:tsockaddr; addrlen:integer):integer; stdcall; far; external winsock; ...
下一页 摘要：一、注意事项：首先，应当考虑表空间和磁盘空间是否足够。我们知道索引也是一种数据，在建立索引的时候势必也会占用大量表空间。因此在对一大表建立索引的时候首先应当考虑的是空间容量问题。其次，在对建立索引的时候要对表进行加锁，因此应当注意操作在业务空闲的时候进行。二、性能调整方面：首当其冲的考虑因素便是磁盘i/o。物理上，应当尽量把索引与数据分散到不同的磁盘上（不考虑阵列的情况）。逻辑上，数据表空间与索引......
