I want to use some container for this case:
i have 4 elements, say string1,string2,class1,class2.
I need string1,string2,class1 to be united, means if i access string1 in
this container you'll get class1. The problem is class2 is something flexible, sometimes it can be written, sometimes it can be deleted.
For example i had
when the main is run, the container will be something like this
which container should i use? or what container should i use?
i tried set(string,set(string,set(weather,condition))),
but it is really something hard to manipulate,
someone can help me?