CODEWITHSUNDEEP
c#
Alexey
Alexey

Reputation: 3637

Comma in a C# statament

I'm reviewing this code (written in C#):

string root = match.Groups[1].Value,
                secon = match.Groups[2].Success ? match.Groups[2].Value.Substring(1) : string.Empty,
                third = match.Groups[3].Success ? match.Groups[3].Value.Substring(1) : string.Empty;

Can someone explain the purpose of the commas?

Upvotes: 1

Views: 181

Answers (3)

Nicholas Carey
Nicholas Carey

Reputation: 74257

It's a syntactic shortcut. Your example above is syntactic sugar for and is exactly the same as:

string root  = match.Groups[1].Value   ;
string secon = match.Groups[2].Success ? match.Groups[2].Value.Substring(1) : string.Empty ;
string third = match.Groups[3].Success ? match.Groups[3].Value.Substring(1) : string.Empty ;

So it saves you a little typing.

That is all.

Upvotes: 3

Ric
Ric

Reputation: 13248

They are used as a shortcut to create variables, and, in your example, all of which are of type string.

Upvotes: 0

nmat
nmat

Reputation: 7591

It declares 3 variables of the type string named root, secon and third respectively. Like this:

int a, b, c;

Upvotes: 5

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