大约有 13,330 项符合查询结果(耗时:0.0301秒) [XML]

https://stackoverflow.com/ques... 

Naming convention for unique constraint

...primary key and foreign key have commonly used and obvious conventions ( PK_Table and FK_Table_ReferencedTable , respectively). The IX_Table_Column naming for indexes is also fairly standard. ...
https://stackoverflow.com/ques... 

Creating your own header file in C

... foo.h #ifndef FOO_H_ /* Include guard */ #define FOO_H_ int foo(int x); /* An example function declaration */ #endif // FOO_H_ foo.c #include "foo.h" /* Include the header (not strictly necessary here) */ int foo(int x) /* Functi...
https://stackoverflow.com/ques... 

Python memory usage of numpy arrays

... b.__sizeof__() is equivalent to sys.getsizeof(b) – palash Feb 27 at 7:02 1 ...
https://stackoverflow.com/ques... 

How to install therubyracer gem on 10.10 Yosemite?

...all bundle exec rake clean build binary gem install pkg/libv8-3.16.14.3-x86_64-darwin-12.gem #note that libv8 version may change, so tab through files in pkg/, also remember to use the one with version specified then just bundle your project gems this is the only way it worked for me on 10.10 (ru...
https://stackoverflow.com/ques... 

Android: View.setID(int id) programmatically - how to avoid ID conflicts?

...same id number in the same hierarchy, then a call to findViewById([repeated_id]) would return the first view set with that one repeated id. That's what I meant. – kaneda Jun 19 '13 at 23:33 ...
https://stackoverflow.com/ques... 

Primary key or Unique index?

.... Example: CREATE TABLE table1 (foo int, bar int); CREATE UNIQUE INDEX ux_table1_foo ON table1(foo); -- Create unique index on foo. INSERT INTO table1 (foo, bar) VALUES (1, 2); -- OK INSERT INTO table1 (foo, bar) VALUES (2, 2); -- OK INSERT INTO table1 (foo, bar) VALUES (3, 1); -- OK INSERT INTO...
https://stackoverflow.com/ques... 

Simplest two-way encryption using PHP

... Edited: You should really be using openssl_encrypt() & openssl_decrypt() As Scott says, Mcrypt is not a good idea as it has not been updated since 2007. There is even an RFC to remove Mcrypt from PHP - https://wiki.php.net/rfc/mcrypt-viking-funeral ...
https://stackoverflow.com/ques... 

In PHP, can you instantiate an object and call a method on the same line?

...So, if you declared a class like this : class Test { public function __construct($param) { $this->_var = $param; } public function myMethod() { return $this->_var * 2; } protected $_var; } You can then declare a function that returns an instance of that ...
https://stackoverflow.com/ques... 

C++ Dynamic Shared Library on Linux

... myclass.h #ifndef __MYCLASS_H__ #define __MYCLASS_H__ class MyClass { public: MyClass(); /* use virtual otherwise linker will try to perform static linkage */ virtual void DoSomething(); private: int x; }; #endif myclass.cc #inc...
https://stackoverflow.com/ques... 

How to get object length [duplicate]

...ize method, as well as a toArray method, which may get you what you need. _.size({one : 1, two : 2, three : 3}); => 3 share | improve this answer | follow ...