I have custom object MyClass and I need to create 3 instances of it.
Instead of doing something dumb like:
MyClass instance1 = new MyClass();
MyClass instance2 = new MyClass();
MyClass instance3 = new MyClass();
Shouldnt I be able to do something like this:
MyClass[] instances = new MyClass();
instances[0].somemethod;
?
Do it inside a loop:
MyClass[] instances=new MyClass[3];
for(int i=0;i<3;i++)
{
instances[i]= new MyClass();
}
Or create the array directly:
MyClass[] instances= new MyClass[]{new MyClass(), new MyClass(), new MyClass()};
MyClass[] instances = new MyClass[3];
for (int i = 0; i < instances.Length; i++)
instances[i] = new MyClass();
Use
MyClass[] instances = new MyClass[num];
for (int i=0; i<num; i++)
{
instances[i]=new MyClass();
}
or
MyClass[] instances = new MyClass[]{ new MyClass(), new MyClass(), new MyClass()};
How about using LINQ?
MyClass[] instances = Enumerable.Repeat(0, 3).Select(i => new MyClass()).ToArray();
Performance considerations are left as an exercise for the reader. ;-)
Using Linq:
MyClass[] instances Enumerable.Range(0, 3).Select(_ => new MyClass()).ToArray();
The starting value 0 doesn't matter, we just want some IEnumerable with 3 elements. Alternatively Enumerable.Repeat also works, again just ignoring the first argument.
