Re: assignment/initialization of container - map

"Victor Bazarov" <>
Tue, 18 Jul 2006 14:13:35 -0400
Ron Natalie wrote:

xuatla wrote:


I want to define a map:

std::map<string, int> myMap;

e.g., the score of students. Then I can assign the value as follows:
myMap["stud1"] = 90;
myMap["stud2"] = 60;

My question now is: can I assign the name of many students in one
line? e.g., for array we have the following way:
    int myArray[] = { 1, 3, 4, 5 };

Do we have similar way for map?
std::map<string, int> myMap = { ("stud1", 90), ("stud2", 60) };
                  // wrong co

No, map's not an aggregate.

The best you can do is something like:

struct apair {
   const char* s;
   int i;
} maptab[] = { { "stud1", 90 }, ....

for(apair* ap = maptab; ap != sizeof maptab/sizeof (apair); ++ap)
myMap[ap->s] = ap->i;

Shouldn't this work

   std::map<string,int> myMap(maptab, maptab +

? You might find that using [] instead of .insert() is less efficient.

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