containers

问题 I need to break open a MS Word file (.doc) and extract its constituent files ('[1]CompObj', 'WordDocument' etc). Something like 7-zip can be used to do this manually but I need to do this programatically. I've gathered that a Word document is an OLE container (hence why 7-zip can be used to view its contents) but I can't work out how to (using C++): open the OLE container extract each constituent file and save it to disk I've found a couple of examples of OLE automation (eg here) but what I

问题 I need to break open a MS Word file (.doc) and extract its constituent files ('[1]CompObj', 'WordDocument' etc). Something like 7-zip can be used to do this manually but I need to do this programatically. I've gathered that a Word document is an OLE container (hence why 7-zip can be used to view its contents) but I can't work out how to (using C++): open the OLE container extract each constituent file and save it to disk I've found a couple of examples of OLE automation (eg here) but what I

问题 I need to break open a MS Word file (.doc) and extract its constituent files ('[1]CompObj', 'WordDocument' etc). Something like 7-zip can be used to do this manually but I need to do this programatically. I've gathered that a Word document is an OLE container (hence why 7-zip can be used to view its contents) but I can't work out how to (using C++): open the OLE container extract each constituent file and save it to disk I've found a couple of examples of OLE automation (eg here) but what I

问题 My goal is to implement a container (here a set of stacks, one for each type) that accepts many different types of objects simultaneously. This would be trivial to do at runtime, using void pointers (or a common base class for all stored types) and runtime type indentification (RTTI). Since all types the container is going to hold are known at compile time, it may (or may not) be possible to make such a class using templates. I am aware that boost::variant already provides similar

问题 I'm trying to inject the Container object (which is available in controllers) into an Entity using postLoad lifecycleCallbacks . The argument to the postLoad method is LifecycleEventArgs . I could see the container property (which I want to retrieve) in EventManager of LifecycleEventArgs according to the dump output, but it seems to be a private property and there is no getContainer() method in EventManager . The below is my code. service.yml services: ibw.jobeet.entity.job.container_aware:

问题 I have this simple piece of code: #include <iostream> #include <set> using std::set; int main(int argc, char argv) { set<int> myset; set<int>::iterator it_l, it_u; myset.insert(10); it_l = myset.lower_bound(11); it_u = myset.upper_bound(9); std::cout << *it_l << " " << *it_u << std::endl; } This prints 1 as lower bound for 11, and 10 as upper bound for 9. I don't understand why 1 is printed. I was hoping to use these two methods to get a range of values for given upper bound / lower bound.

问题 I have this simple piece of code: #include <iostream> #include <set> using std::set; int main(int argc, char argv) { set<int> myset; set<int>::iterator it_l, it_u; myset.insert(10); it_l = myset.lower_bound(11); it_u = myset.upper_bound(9); std::cout << *it_l << " " << *it_u << std::endl; } This prints 1 as lower bound for 11, and 10 as upper bound for 9. I don't understand why 1 is printed. I was hoping to use these two methods to get a range of values for given upper bound / lower bound.

问题 BY default when you run docker run -it [myimage] OR docker attach [mycontainer] you connect to the terminal as root user, but I would like to connect as a different user. Is this possible? 回答1: For docker run : Simply add the option --user <user> to change to another user when you start the docker container. docker run -it --user nobody busybox For docker attach or docker exec : Since the command is used to attach/execute into the existing process, therefore it uses the current user there

问题 I couldn't find an exact answer to this question and hence posting here. When I think of vector, it needs to build objects in a contiguous memory location. This means that vector keeps memory allocated and have to do an in-place construction (=placement new) of objects being pushed into it. Is this a valid assumption? Also, does this mean the container is manually invoking the destructor rather than calling delete? Are there any other assumptions that I am missing here? Does this mean I can

问题 I need to implement a set of sets in my application. Using QSet with a custom class requires providing a qHash() function and an operator== . The code is as follows: class Custom{ int x; int y; //some other irrelevant here } inline uint qHash(Custom* c){ return (qHash(c->x) ^ qHash(c->y)); } bool operator==(Custom &c1, Custom &c2){ return ((c1.x==c2.x) && (c1.y == c2.y)); } //now I can use: QSet<Custom*> How can I implement qHash(QSet<Custom*>) , to be able to use QSet< QSet<SomeClass*> > ?