namespaces

问题 This question already has answers here : C++: “Class namespaces”? [duplicate] (4 answers) Closed 7 years ago . In C++, all I want to do is declare a DisplayInfo class in a .h file, and then in the .cpp file, not have to type the first DisplayInfo::DisplayInfo() and every function definition. Sadly, I've looked at over 20 topics and my C++ book for over two hours now and have not been able to resolve this. I think it's because I'm trying to use my 10-year-old java training in C++. 1st trial: /

问题 I read that all primitives fall under the System namespace. If I comment out using System , I would expect there to be a build error in my program. However, it is running successfully. Why is this? 回答1: It's because int is an alias for System.Int32 , and since the "Int32" is already prefixed with its namespace (ie. "fully qualified"), the syntax is legal without having to specify using System; at the top of your code. The MSDN snippet below describes this concept- Most C# applications begin

问题 I have problem with autoloading with composer when i use psr-4 autoloading it doesn't work and give me error. I tried: $ composer dump-autoload and a lot of other thing but it doesn't work without require one; error: You are now a master builder, that knows how to autoload with a classmap! Fatal error: Uncaught Error: Class 'VegithemesLibraryGreeting' not found in /home/vaclav/Server/vssk/VSSK/project/aldemo/index.php:10 Stack trace: #0 {main} thrown in /home/vaclav/Server/vssk/VSSK/project

问题 I have problem with autoloading with composer when i use psr-4 autoloading it doesn't work and give me error. I tried: $ composer dump-autoload and a lot of other thing but it doesn't work without require one; error: You are now a master builder, that knows how to autoload with a classmap! Fatal error: Uncaught Error: Class 'VegithemesLibraryGreeting' not found in /home/vaclav/Server/vssk/VSSK/project/aldemo/index.php:10 Stack trace: #0 {main} thrown in /home/vaclav/Server/vssk/VSSK/project

问题 I have 2 teams: devs: they create a new Kubernetes namespace each time they deploy a branch/tag of their app ops: they manage access control to the cluster with (cluster)roles and (cluster)rolebindings The problem is that 'devs' cannot kubectl their namespaces until 'ops' have created RBAC resources. And 'devs' cannot create RBAC resources themselves as they don't have the list of subjects to put in the rolebinding resource (sharing the list is not an option). I have read the official

问题 I'm trying to instantiate an object of a dynamically created classname. I'm using namespaces and the class I want to instantiate is in the same namespace. To examplify, this works fine: namespace MyNamespace; new MyClass; // MyNamespace\MyClass instantiated Whereas this doesn't: namespace MyNamespace; $class = 'MyClass'; new $class; // Class 'MyClass' not found Is this a bug or am I doing something wrong? 回答1: When you use a string with new you need to provide a fully qualified class name.

问题 I'm trying to instantiate an object of a dynamically created classname. I'm using namespaces and the class I want to instantiate is in the same namespace. To examplify, this works fine: namespace MyNamespace; new MyClass; // MyNamespace\MyClass instantiated Whereas this doesn't: namespace MyNamespace; $class = 'MyClass'; new $class; // Class 'MyClass' not found Is this a bug or am I doing something wrong? 回答1: When you use a string with new you need to provide a fully qualified class name.

问题 Say, I have two namespaces k8s-app1 and k8s-app2 I can list all pods from specific namespace using the below command kubectl get pods -n <namespace> We need to append namespace to all commands to list objects from the respective namespaces. Is there a way to set specific namespace and list objects without including the namespace explicitly? 回答1: I like my answers short, to the point and with references to official documentation: Answer : kubectl config set-context --current --namespace=my

问题 I only have access to xpath 1.0 commands and functions. I need to move the namespace declaration from the root node to a child node where that namespace starts to be used. Source XML: <?xml version="1.0" encoding="UTF-8" standalone="no"?> <Accounts xmlns:test="http:example.com/test1"> <ParentAccount>10113146</ParentAccount> <test1>test1</test1> <test2>test2</test2> <test:Siblings> <test:CustomerNumber>10113146</test:CustomerNumber> <test:CustomerNumber>120051520</test:CustomerNumber> </test

问题 I am trying to take a string and parse it into an int. I have read the many answers out there, and it seems that using stoi is the most up-to-date way. It appears to me that stoi uses std , but I am getting Function 'stoi' could not be resolved despitre using namespace std; #include <iostream> #include <string> #include <cstring> #include <fstream> #include<stdlib.h> using namespace std; int main(int argc, char* argv[]) { string line = ""; string five = "5"; int number = stoi(five); //Error