Question

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?

Answer 1

You must invoke the constructor for each item. There is no way to allocate an array and invoke your class constructors on the items without constructing each item.

You could shorten it (a tiny bit) from a loop using:

clsPerson[] objArr = Enumerable.Range(0, 1000).Select(i => new clsPerson()).ToArray();

Personally, I’d still allocate the array and loop through it (and/or move it into a helper routine), though, as it’s very clear and still fairly simple:

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