In Dart, checking for a value to be <code>== null</code> seems similar to checking if it <code>is Null</code>. Why is the former more preferable?

It is the type of comparison you are doing. In <code>== null</code>, you are comparing an object/primative to <code>null</code> whereas in the latter, <code>is Null</code>, <code>null</code> is an object. It makes no difference in the compiler. <code>== null</code> is more favourable as the two being compared could be both primitives, which saves memory in the system.

Why is `== null` preferable to `is Null`?

2 Answers

It is the type of comparison you are doing. In == null, you are comparing an object/primative to null whereas in the latter, is Null, null is an object. It makes no difference in the compiler.

== null is more favourable as the two being compared could be both primitives, which saves memory in the system.