porting

问题 I am trying to port a query from MySQL to SQL SERVER 2012. How do i write an equivalent for MySQL's substring_index()? MySQL SUBSTRING_INDEX() returns the substring from the given string before a specified number of occurrences of a delimiter. SUBSTRING_INDEX(str, delim, count) SELECT SUBSTRING_INDEX('www.somewebsite.com','.',2); Output: 'www.somewebsite' 回答1: Try this solution based on T-SQL and XQuery( (root/row)[position() <= sql:variable("@count")] ): T-SQL Scalar function: CREATE

问题 I know both languages are from the same ECMA-262 standard. It seems that the two are becoming very similar with JavaScript adding event listeners for core Object instances through methods like freeze and seal in EMCAScript-262 5th edition and such. I was wondering what the differences are? 回答1: First of all ActionScript 3 and JavaScript are both defined in ECMA-262 so they have a lot in common. Both languages feature prototype inheritance for instance. It is however not correct that

问题 I Upgrade MyPHP Version To 5.4 (Xampp 1.7.3 to 1.8.0). Now I see Strict Standards error, for myDBconnection : Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\alous\include\dbconn.php on line 4 dbconn.php: <?php defined('_VALID') or die('Restricted Access!'); $conn = &ADONewConnection($config['db_type']); // <--- This Line 4 if ( !$conn->Connect($config['db_host'], $config['db_user'], $config['db_pass'], $config['db_name']) ) { echo 'Could not connect to

问题 I have a problem I'm struggling with. I have this mixin (which is an attempt to port some less to sass ): @mixin button-variant($color, $background, $border) { ... .foreverAlone{ ... } .iThink .illNeverWork& { color: $pinkUnicornRainbow; ... } } Which obviously is not working :D I would like it to generate something like: .callerClass .foreverAlone{ ... } .callerClass .iThink .illNeverWork.callerClass{ color: #123ABC; ... } The mixin is called inside various div classes, so it is not possible

问题 George Marsaglia has written an excellent random number generator that is extremely fast, simple, and has a much higher period than the Mersenne Twister. Here is the code with a description: good C random number generator I wanted to port the CMWC4096 code to Java, but it uses several unsigned datatypes so I am not sure how to do this properly. Here is the full C code: /* choose random initial c<809430660 and */ /* 4096 random 32-bit integers for Q[] */ static unsigned long Q[4096],c=362436;

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . I am trying to parallelize a function that contains several procedures. The function goes: void _myfunction(M1,M2){ for (a = 0; a < A; a++) { Amatrix = procedure1(M1) /*contains for loops*/; Bmatrix = procedure2(M1) /*contains for loops*/; ... for ( z = 1 ; z < Z ; z++ ){ calculations with Amatrix

问题 I'm porting a 32-bit C++ app to 64-bit (using VS2008). I'm not sure what does this field mean in the VS2008 :: Visual studio ->Configuration Properties-> Linker-> Advanced Options->Target Machine. By default it's value is set to " Not set ". Is it compulsory to change it's value to "MACHINEx64" if I want my application to be ported to 64-bit executable. 回答1: Yes, this is a very important option. It sets the IMAGE_FILE_HEADER.Machine field in the executable file. The very first field of the

问题 I'm in the middle of upgrading some windows applications (Legacy Code) from VC 6 to VS2010. Most of the applications compiled and would run after cleaning up expected conversion errors, but I'm having a lot of trouble with this. Here is where LoadFrame() fails and the application exits. The error returned here is 0. CMainFrame* pMainFrame = new CMainFrame;// Create main MDI Frame window if (!pMainFrame->LoadFrame(IDR_MAINFRAME)) DWORD err = GetLastError(); return FALSE; Here is the LoadFrame(

问题 I am got source files from an application on IBM AIX and I am trying to build them on Linux. However I am getting compilation errors header file not found. When compiled source from AIX on Linux got error these headers not found: usersec.h userpw.h sys/mode.h standards.h After I Googled I realized they are headers ( /usr/include/usersec.h ) for user management (user authentication and pwd verification etc) funtions on AIX. As there is no equivalent header on Linux, I like to know what is best

问题 I have got source files from an application on IBM AIX and I am trying to build them on Linux. However, header files named usersec.h and userpw.h which are there on AIX are not present on Linux. Hence, on Linux I am getting compiler error for these functions: Declared in usersec.h int getuserattr (char *, char *, void *, int); More info about getuserattr is here Declared in userpw.h struct userpw { char *upw_passwd; /* user's passwd */ unsigned int upw_flags; /* flags of restrictions */ time