C# Array declaration with commas [closed]

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Why can't I just re-declare an array with commas?

static void Main(string[] args)
{
    short[] arr = new short[6] { 1,1,1,1,1,1 };

    if(1)
    {
        arr = {1,0,0,1,1,0}; // this line doesn't work
    }
}

@Kyle that's fine, but if(1) will not compile in C#, and its much different from if(someBoolVar) See for yourself — maccettura
– maccettura, Commented Jun 15, 2017 at 18:00
Possible duplicate of Why can't I use array initialisation syntax separate from array declaration? — Knowledge Cube
– Knowledge Cube, Commented Jun 15, 2017 at 19:21
wtf, I did not vote to close it as "primarily opinion based", I voted to close it as duplicate of the question suggested by Horton. — Mike Nakis
– Mike Nakis, Commented Jun 15, 2017 at 19:37

Mike Nakis · Accepted Answer · 2017-06-15 17:48:40Z

7

The initialization expression is not {1,0,0,1,1,0}

The initialization expression must be new short[6] { 1,1,1,1,1,1 }

So, essentially, the statement of your question is the answer to your question.

answered Jun 15, 2017 at 17:48

Mike Nakis

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2 Comments

ckuri Over a year ago

You could omit the length specifier though.

Mike Nakis Over a year ago

@ckuri yes, that's right, and preferable.

igorc · Accepted Answer · 2017-06-15 19:10:29Z

1

This syntax : short[] arr = {1, 0, 0, 1, 1, 0};
is called array initialization syntax and it works only in declaration.
why ?

As the guy here wrote, it just how Microsoft guys choose to implement for some reason.

answered Jun 15, 2017 at 19:10

igorc

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