containers

问题 Besides the fact that the standard defines it to be contiguous, why is std::vector contiguous? If it runs out of space, it needs to reallocate a new block and copy the old block to the new one before continuing. What if it wasn't contiguous? When the storage fills up, it would just allocate a new block and keep the old block. When accessing through an iterator, it would do simple >, < checks to see which block the index is in and return it. This way it doesnt need to copy the array every time

问题 I'm using Docker to create a container application and then deploy it to kubernetes engine but when the application is been initialized I get this error: err: open C:\Go/lib/time/zoneinfo.zip: no such file or directory 回答1: When using Go's time package, specifically the LoadLocation method, it looks for time zone database information in various locations. This is explained in the comments for LoadLocation in the source code at https://golang.org/src/time/zoneinfo.go. Specifically it looks in

问题 I have the following class: template <typename T> class A { public: void method(const char *buffer); // the template T is used inside this method for a local variable }; Now I need an array of instances of this class with different templates like: std::vector<A*> array; array.push_back(new A<uint32_t>); array.push_back(new A<int32_t>); But std::vector<A*> array; wont work, because I apparently need to specify a Template, but i can't so that because I store different types in this array. Is

问题 I need a template like this, which work perfectly template <typename container> void mySuperTempalte (const container myCont) { //do something here } then i want to specialize the above template for std::string so i came up with template <typename container> void mySuperTempalte (const container<std::string> myCont) { //check type of container //do something here } which doesnt't work, and throws an error. I would like to make the second example work and then IF possible i would like to add

问题 The python documentation frequently speaks of "containers". E.g. : If check_circular is False (default: True), then the circular reference check for container types will be skipped and a circular reference will result in an OverflowError (or worse). But I can't find any official definition of containers, neither a list of them. Edit For Python 2.7.3: Checked builtin types which are containers: ( isinstance(object, collections.Container) returns True ) Containers which have a __contains__

问题 derrend@laptop ~/topdir $ docker version Client version: 1.7.1 Client API version: 1.19 Go version (client): go1.4.2 Git commit (client): 786b29d OS/Arch (client): linux/amd64 Server version: 1.7.1 Server API version: 1.19 Go version (server): go1.4.2 Git commit (server): 786b29d OS/Arch (server): linux/amd64 derrend@laptop ~/topdir $ pwd; ls * $HOME/topdir Dockerfile afolder: afile As I understand it, when I execute a docker build the afolder and its contents will be included inside my

问题 I'm trying to connect to an Oracle database at my company through my docker container that contains some of my python scripts with the package cx_Oracle. After i build and run the container, i get the following error: conn = cx_Oracle.connect("{0}/{1}@{2}".format(configOracle["username"], configOracle["password"],r"ed03:1521/configOracle["servername"])) cx_Oracle.DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library: "libclntsh.so: cannot open shared object file: No such file

问题 Note: Question is related to Bluemix docker support. I am trying to connect two different Docker Containers deployed in Bluemix. I am getting the exception: java.net.NoRouteToHostException: No route to host when I try such connection (Java EE app running on Liberty trying to access MySQL). I tried using both private and public IPs of MySQL Docker Container. The point is that I am able to access MySQL Docker Container from outside Bluemix. So the IP, port, and MySQL itself are ok. It seems

问题 I have a view that contains 2 parts: + Part 1: an ADD button + Part 2: a container LIST that has scroll attribute is auto. When user clicks on button ADD, the system will add a container to container LIST. User can add as much as they want. But my container LIST has limit height so I want to scroll to new container that added to container LIST when user clicks ADD button. Anyone help me. Thanks 回答1: I tried to use: var scroller = pan.getScrollable().getScroller(); scroller.scrollToEnd(true);

问题 I am trying to make a polymorphic vector using std::reference_wrapper for these classes: struct Int2TypeBase{ virtual void which(){ std::cout << "Int2TypeBase" << "\n";} }; template <int v> struct Int2Type : public Int2TypeBase { enum { value = v }; void which(){ std::cout << "Int2Type<" << value << ">""\n";} friend bool operator==(const Int2Type& lhs, const Int2Type& rhs){ return lhs.v == rhs.v; } }; Now I am trying to make use of std::reference_wrapper like this: int main(){ using namespace