wrapper

问题 I know: this has been done to death. But, believe me, I've been researching for quite a while on how to fix this one. What I'm trying to achieve is a PDO MySQL Database wrapper for use with PDO that I can just incorporate into my code. My main problem stems from two functions in particular, as well as the actual binding of the parameters I'm trying to reach. The reason why I state two functions as opposed to one is, despite my efforts, I haven't been able to spot which one is attempting the

问题 Edit : Made title a bit clearer. I am trying to wrap glibc's __assert_fail and __assert_perror_fail functions with my own that log the messages using syslog . I have verified that if I fail an assert my functions get called. The problem lies in libzmq's assertions. libzmq's assertions only invoke my wrapper functions when I build with -static . NOTES I patched libzmq to call __assert_* instead of fprintf(stderr, ...) , and I have verified that it correctly calls __assert_* . I also patched

问题 Due to legacy function calls I'm sometimes forced to write ugly wrappers like this function return = someWrapper(someField) a = someField.a; b = someField.b; % and so on, realistically it's more like ten variables that % could actually be grouped in a struct save('params.mat', 'a', 'b'); %etc. % then, on another machine, a function loads params.mat, does the calculations % and saves the result in result.mat containing the variables c,d,... load('result.mat', 'c', 'd'); return.c = c; return.d

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Weird Java Boxing Recently while I was reading about wrapper classes I came through this strange case: Integer i1 = 1000; Integer i2 = 1000; if(i1 != i2) System.out.println("different objects"); if(i1 == i2) System.out.println("same object"); Which prints: different objects and Integer i1 = 10; Integer i2 = 10; if(i1 != i2) System.out.println("different objects"); if(i1 == i2) System.out.println("same object");

问题 We have COM dll which was written in C++ and has been used by the apps written in vb 6.0. My company plans write the newer versions of apps in .Net platform. As far as the performance is concerned, when using a COM dll in a C# project, what should I choose from the 3 options listed below Just adding the dll as a com reference Writing a wrapper dll with C++/Cli Generating a wrapper dll using TlbImp.exe Or are there any other options? Thanks. 回答1: Writing a wrapper in C++/CLI isn't that likely

问题 What it the right way to write a wrapper class around an STL container, which is also a template (can accept a generic type T as element) and allows me to use an iterator as I would do with the STL container directly? I want to do something of the following type #include <list> #include <iostream> class MyClass{}; template<class T> class Wrapper { public: typename std::list<T>::iterator iterator; std::list<T> elements; iterator begin(){ return elements.begin(); }; iterator end(){ return

问题 How can you create a ZIP file using the fopen() wrapper? This is obviously not the way: <?php if( class_exists('ZipArchive') ){ echo 'Class ZipArchive exists, generating file...' . PHP_EOL; $fp = fopen('zip://' . dirname(__FILE__) . '/test.zip', 'w'); if($fp){ fwrite($fp, 'Lorem ipsum dolor sit amet, consectetur adipisicing elit.'); fclose($fp); echo 'Done' . PHP_EOL; }else{ echo 'Could not open file' . PHP_EOL; } }else{ echo 'Class Zip is not available' . PHP_EOL; } ... because all I get is:

问题 An application that writes data to disk in 100MB chunks and increments the file-name by appending +1, so n1, n2 ... n1000 . This eventually uses all of the free space on the partition (Linux host). I am looking for a way to delete files that were first written in the series until the drive space is under a specific utilization. If the latter, would https://stackoverflow.com/a/5912404/666891 be a good solution? The following solution was proposed and looks to be a viable solution per https:/

问题 Can anyone recommend a wrapper class for the gd library? I've found a few, but they just have basic image manipulation functions, such as flipping, reversing, etc. I am really drawing here, so I want all the line, point, geometric figure, and color functions. And a basic palette, so I don't have to go through the hassle of defining basic colors all the time :Þ Edit: My webhost doesn't have 5.3 available. Surely there must be a class that doesn't rely on 5.3 features? 回答1: Imagine is an OO

问题 I have a Python script that I wish to be able to be run as the system user guybrush with UID 200 and group guybrush with GID 200. At the moment my Python script (located in /path/to/script.py ) looks like this: #!/usr/bin/env python2 import os print "uid: %s" % os.getuid() print "euid: %s" % os.getgid() print "gid: %s" % os.geteuid() print "egid: %s" % os.getegid() My attempted C wrapper ( scriptwrap.c ) looks like this: #include <unistd.h> #include <sys/types.h> int main(int argc, char *argv