Add a comment. Active Oldest Votes. Gorpik Gorpik By the way in Objective-C constructor can returns null nil — fnc Swapping the first two sentences, or otherwise making the second sentence more prominent, would make the answer easier to parse more direct for use by people who've only read the "question title", not the entire question. Community Bot 1 1 1 silver badge. Marc Gravell Marc Gravell k gold badges silver badges bronze badges.
True enough - but I thought it was worth mentioning as an edge-case ;-p — Marc Gravell. And it's almost always a reference to a newly created object, too. The only exception to that that I know of is a string corner case. Show 1 more comment. Sesh Sesh 5, 4 4 gold badges 28 28 silver badges 39 39 bronze badges.
Log "Looks null to me. Stevens Miller Stevens Miller 1, 7 7 silver badges 25 25 bronze badges. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked Related Hot Network Questions. If it passes, then create the object. Alternately, why not make "IsMalformed" a public property and test that, instead of testing the object reference for null.
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Sign in to vote. Ever want to return null from a class constructor? A constructor doesn't return anything, so a constructor itself can't return a null reference. But what does C offer with which we can simulate returning null from a constructor?
Here's an example pattern. Can you think of a better one? Wednesday, March 5, AM. Thanks for the comments! But since C 9. So, with C 9. Thomas Claudius Huber. If there is a need to represent the possible abscence of a value I prefer the Option type.
Unfortunately all NRTs bring to the table are compile-time checks that you are putting your null-guards in :. Thanks Thomas. I had the following piece of code that does a null check within a Ternary Expression:.
Empty : attribute. The compiler explained to me that I am trying to do a null check against a non-nullable value type. By attempting this, I realized the null check was not necessary after confirming the type System. CustomAttributeTypedArgument is a non-nullable struct. Does this seem accurate to you? Point of sharing this is to demonstrate after going through a code base to update null checks, I learned something the code was doing that is not necessary: a null check against a non-nullable value type.
Hey Jamie, yes, your adjustments looks accurate to me. I see a lot of code that does null checks against value types that can not be null. NET development.
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