I would like to make a dynamic array of a class with a constructor that has paramaters.
Where does the constructor's size parameter go?
ex. twoDArrayInDisguise = new dynamicArray(size)*[size];
Does not work
Asked
Active
Viewed 856 times
1
-
http://stackoverflow.com/questions/3016772/dynamic-memory-allocation-with-default-values This is similar question – ckv Jan 19 '11 at 12:45
2 Answers
5
You cannot do this directly (when using new[], the default constructor is used).
Instead, use a std::vector. You can initialise each element in terms of a reference object, e.g.:
std::vector<T> vec(size, T(/* args */));
Oliver Charlesworth
- 267,707
- 33
- 569
- 680
-
+1 Also, this is the reason why T should support copy constructor and copy assignment if you intend to use it with a std::vector (or any other std container). – MatiasFG Jan 19 '11 at 13:38
1
In C++, you cannot dynamically create an array of a class with a constructor that has paramaters!
Nawaz
- 353,942
- 115
- 666
- 851