CODEWITHSUNDEEP
c#.net
Sam's son
Sam's son

Reputation: 11

How to check if a variable is a certain type?

Yeah, sorry if my question wasn't asked right- im new, dont know all the rules. Thanks for correcting me, ill definitely keep these in mind for the future.

Basically, I'd like to know if there is a method in C# which checks a variable's type and returns a bool value.

Kinda like isinstance(variable, type) in Python.

Example for that:

x = "apple"
isinstance(x, str) -> returns true, because x is a string
isinstance(x, int) -> returns false, because x is not an int

Thanks,

Upvotes: 1

Views: 1429

Answers (2)

Heinzi
Heinzi

Reputation: 172478

Each player object returns a PlayedCard variable. If the player puts down one card, the PlayedCard will be a single Card object, if the player puts down multiple cards, it will be an Array of Card objects.

Frankly, this is not a good idea.

On of the great strengths of C# is its strong type system. Once your program compiles, a lot of potential bugs are already gone.

I suggest the following alternatives (in order from simple to complex):

  • Always return an array. If the player puts one card down, return a single-element array.

  • Or wrap the array in a custom object with exactly the properties you need (bool PlayedSingleCard => backingArray.Count == 1;, etc.).

Upvotes: 3

Jaloopa
Jaloopa

Reputation: 750

You want the is operator

if (playedCard is Card card)
{
    //do single card stuff
}
else if (playedCard is Card[] cards)
{
    //do things with the array
}

You could also consider making the second check be on IEnumerable<Card>

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/is

Upvotes: 1

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