Question

I found that some programmers would like to code like this in the comparator operator. I found it is more difficult to read…

if (0 == foo()){
    ....
}

Is there any different between foo() == 0 in term of readability ? What’s the advantage of using 0 ==foo()?

Answer 1

No I think the best reason to do it like this:

0 == foo

is to make sure you don’t forget one = which would make it

if (0 = foo)

which will usually raise a compiler error rather than

if (foo = 0)

which creates a hard-to-find bug.