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Given a class:

class clsPerson { public int x, y; }

Is there some way to create an array of these classes with each element initialized to a (default) constructed instance, without doing it manually in a for loop like:

clsPerson[] objArr = new clsPerson[1000];

for (int i = 0; i < 1000; ++i)
    objArr[i] = new clsPerson();

Can I shorten the declaration and instantiation of an array of N objects?

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The constructor must be run for every item in the array in this scenario. Whether or not you use a loop, collection initializers or a helper method every element in the array must be visited.

If you're just looking for a handy syntax though you could use the following

public static T[] CreateArray<T>(int count) where T : new() {
  var array = new T[count];
  for (var i = 0; i < count; i++) {
    array[i] = new T();
  }
  return array;
}

clsPerson[] objArary = CreateArray<clsPerson>(1000);

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