can we initialize array by calling parameterized constructor

Question

How to initialize an array of objects by calling the parameterized constructor of the class

Example:

class a
{
    int val;

    //def
    public a()
    {
    }

    //with param
    public a(int value)
    {
        val = value;
    }
}

How to initialize a dynamic array of the above class by using its constructor

eg:

a[] dyArray = new a[size];  // how to call constructor to initialize a value 
                            // other than looping each element and initialize 
                            // it? say, with value 10;

Is there any other standard way to do this?

possible duplicate of [All possible C# array initialization syntaxes](http://stackoverflow.com/questions/5678216/all-possible-c-sharp-array-initialization-syntaxes) — Pierre-Luc Pineault, Sep 10 '15 at 04:25
You can't do it without looping or explicitly providing every element. — Enigmativity, Sep 10 '15 at 04:28
okay. I too think so, just asked to know any solution available or not. Thanks @Enigmativity — Sin, Sep 10 '15 at 04:29
@Pierre-LucPineault - This isn't a duplicate. This is a different question. — Enigmativity, Sep 10 '15 at 04:29

score 1 · Answer 1 · answered Sep 10 '15 at 04:24

1

If you can use a generic list instead you can create the collection and initialise a value:

List<a> aList = new List<a>
{
    new a(10)
};

https://msdn.microsoft.com/en-us/library/bb384062.aspx

answered Sep 10 '15 at 04:24

Steve

9,100
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79

yea, for a list. Thanks for that answer – Sin Sep 10 '15 at 04:30

score 0 · Answer 2 · answered Sep 10 '15 at 04:27

0

try this one:

 a[] dyArray = new a[]{
     new a(1),
     new a(2)
 };

answered Sep 10 '15 at 04:27

VJPPaz

787
5
19

but it is a dynamic array, so this wont be possible in all cases. – Sin Sep 10 '15 at 04:28

score 0 · Accepted Answer · answered Sep 10 '15 at 04:46

0

How about this?

var darray = (new int[dzise]).Select(x=>new a(10)).ToArray();

answered Sep 10 '15 at 04:46

Sateesh Pagolu

8,769
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can we initialize array by calling parameterized constructor

3 Answers3