Vector Initialization Syntax

[cppaddict]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};

Thanks for any ideas,
cpp

 

[Victor Bazarov]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};

No. But you should be able to declare an array of pointers to char
and then create your vector from it, like this:

char const* theNames[] = { "Stan", "Julie" };
std::vector<MyClass> myVector(theNames, theNames + 2);

(assuming your 'MyClass' class has a constructor that accepts a pointer
to const char)

If your MyClass requires a 'string' to be passed to the c-tor, you need
to construct an array of strings, and then your vector from it.

Victor

 

[Howard Hinnant]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};

Thanks for any ideas,
cpp

You can get somewhat close with:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};
std::vector<MyClass> v(myArray,
myArray+sizeof(myArray)/sizeof(myArray[0]));

which unfortunately involves an extra copy of the data. There is
discussion of a language supported superior alternative on the committee
for C++0X, but no firm proposals I'm aware of (so it isn't even close to
a sure thing).

-Howard

 

[John Harrison]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};

Thanks for any ideas,
cpp

http://www.codeproject.com/vcpp/stl/PGIL.asp

john

 

[Gianni Mariani]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};

Thanks for any ideas,
cpp

Leor Zolman's initialization library might be useful !

http://www.bdsoft.com/tools/initutil.html

 

[Alex Vinokur]

Is it possible to avoid using push_back repeatedly when initializing a
vector? That is, is there a vector syntax that would be analogous to
the following array initialization syntax:

MyClass myArray[] = {
MyClass("Stan"),
MyClass("Julie")
};