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what is the default namespace in c++？
#include<iostream>
class B{
.....
}
int main(){
.....
}
so what namespace is class B in?
955
The default namespace is declared in the root element and applies to all unqualified elements in the document. Default namespaces apply to elements only, not to attributes.
In most Kubernetes distributions, the cluster comes out of the box with a Namespace called “default.” In fact, there are actually three namespaces that Kubernetes ships with: default, kube-system (used for Kubernetes components), and kube-public (used for public resources).
Setting Default Namespace Namespace defaults are set in your cluster's context configuration. We change the default you will need to use the kubectl set-config command and specify the name of the namespace want to be used as default.
The default namespace is used in the XML document to save you from using prefixes in all the child elements. The only difference between default namespace and a simple namespace is that: There is no need to use a prefix in default namespace.
B is in the global namespace. It can be referred to unambiguously as ::B.
Eric Z provides an excerpt from C++03 here: https://stackoverflow.com/a/10269085
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