C# – how can I declare multiple bools as false

cnet

Instead of declaring:

bool one = false;
bool two = false;
bool three = false;

Is it possible to declare something like:

bool one, two, three;

while setting them all to false ?

bool one, two, three = false

Best Answer

The default value of a bool variable is false. The default value of a bool? variable is null.

For reference you can visit: bool (C# Reference).

But you cannot use it unless assigned with values.

bool one, two, three;
one = two = three = false

The same goes with nullable boolean:

bool? isCase = null;
if (isCase.HasValue){
    //TODO:
   }

Related Solutions

C# – How to calculate someone’s age based on a DateTime type birthday

An easy to understand and simple solution.

// Save today's date.
var today = DateTime.Today;

// Calculate the age.
var age = today.Year - birthdate.Year;

// Go back to the year in which the person was born in case of a leap year
if (birthdate.Date > today.AddYears(-age)) age--;

However, this assumes you are looking for the western idea of the age and not using East Asian reckoning.

C# – How to cast int to enum

From an int:

YourEnum foo = (YourEnum)yourInt;

From a string:

YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);

// The foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
{
    throw new InvalidOperationException($"{yourString} is not an underlying value of the YourEnum enumeration.")
}

Update:

From number you can also

YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);

Best Answer

Related Solutions

C# – How to calculate someone’s age based on a DateTime type birthday

C# – How to cast int to enum

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