TypeError: Operator == not compatible with types bool and uint256

Question

I am receiving the error: 'TypeError: Operator == not compatible with types bool and uint256'

my code is:

if (orderedScreening[0]/4 == orderedScreening[1]/4 == orderedScreening[2]/4 == orderedScreening[3]/4 == orderedScreening[4]/4) {
              f = true;
              }

^orderedScreening is a dynamic uint array.

I have already tried:

if (uint(orderedScreening[0]/4) == uint(orderedScreening[1]/4) == uint(orderedScreening[2]/4) == uint(orderedScreening[3]/4) == uint(orderedScreening[4]/4)) {
                  f = true;
                  }

and:

a = orderedScreening[0];
b = orderedScreening[1];
c = orderedScreening[2];
d = orderedScreening[3];
e = orderedScreening[4];

    if (a/4 == b/4 == c/4 == d/4 == e/4) {
                      f = true;
                      }

I also tested:

if (orderedScreening[0] == orderedScreening[1] == orderedScreening[2] == orderedScreening[3] == orderedScreening[4]) {
              f = true;
              }

and received the same error. How can I resolve this error?

Answer 1

This is Solidity, not Python.

Change this:

if (a/4 == b/4 == c/4 == d/4 == e/4)

To this:

if (a/4 == b/4 && b/4 == c/4 && c/4 == d/4 && d/4 == e/4)

Of course, in order to reduce gas-cost, you might want to store those intermediate results (at least b/4, c/4 and d/4) in temporary variables before using them.