Could someone explain to me the reason for using namespaces? I've just always been instructed to do<P>using namespace std;<P>without any explanation (so far).

conditional_t not found in namespace std --- tensorflow c++ versioning issue #36 New issue Open frederick-m-k ...

no template named 'optional' in namespace 'std' with -std=c++17 #1280 Closed Omicronlawful opened on May 5, 2023 ...

Namespacein c++ two variables with the same name are not possible in the same scope i.e a name given to specific type or function represent one entity in a particluar scope but with namespaces, there ...