Is there such a thing as a chained NULL check?

Question

I have the following ugly code:

if (msg == null || 
    msg.Content == null || 
    msg.Content.AccountMarketMessage == null || 
    msg.Content.AccountMarke         


        

Answer 1

You need monads and Monadic null checking. Could have a look at Monads.Net package. It can help with simplifying null tests and getting values from deep navigation properties

Something like

var sObject = person.With(p=>p.Content).With(w=>w.AccountMarketMessage ).With(p=>p.Account).With(p=>p.Object);

If you wanted a default value then

var sObject = person.With(p=>p.Content).With(w=>w.AccountMarketMessage).With(p=>p.Account).Return(p=>p.Object, "default value");