C#•6mo ago

Null check

if (maybe is int number)
{
  Console.WriteLine($"The nullable int 'maybe' has the value {number}");
}

if (maybe is int number)
{
  Console.WriteLine($"The nullable int 'maybe' has the value {number}");
}

if(maybe != null)
{
  Console.WriteLine($"The nullable int 'maybe' has the value {maybe}");
}

if(maybe != null)
{
  Console.WriteLine($"The nullable int 'maybe' has the value {maybe}");
}

8 Replies

you could also use if (maybe.HasValue) {}

fæOP•6mo ago

which do you prefer?

i use all three tbh but mostly is int and .HasValue nowadays i believe

fæOP•6mo ago

what about is not null

really i use is not <type> rather

Joschi•6mo ago

There is one small reason for is over == and that is, that == could technically be overwritten. While is cannot.

And also is {}, before is not null is a thing Actually I use ?? mostly, not explicitly checking for null

Angius•6mo ago

is {} over is not null lets you cast to a variable too x is {} y works, x is not null y does not