An interesting thing about '!=' in Swift

I’ve been programming in Swift today.

Coming from a C/Objective-C background, I assumed the following code would work:

// won't compile
if (someVar!=nil) {

   ...
}

It won’t work; the compiler must sees it as something like someVar! = nil due to optional chaining.

Instead, you have to write

if (someVar != nil) {

   ...
}