Question

Imagine this case where I have an object that I need to check a property. However, the object can currently have a null value.

How can I check these two conditions in a single "if" condition?

Currently, I have to do something like this:

if (myObject != null) {     if (myObject.Id != pId)     {         myObject.Id = pId;         myObject.Order = pOrder;     } } 

I would like something like this:

if (myObject != null && myObject.Id != pId) 

I want to evaluate the second condition only if the first was true.

Answer 1

if (myObject != null && myObject.Id != pId) {    myObject.Id = pId;    myObject.Order = pOrder; } 

&& is a short-circuiting logic test – it only evaluates the right-hand-side if the left-hand-side is true. Contrast to a & b, which always evaluates both sides (and when used with integral types instead of bool, does a bitwise "and").