Exactly what it says: 'int' object is not iterable.

If you do not understand the term iterable, do not create an issue on this kata, but educate yourself. I don't know if it's the correct language (you don't even mention), but try this: MDN on iterables.

Closing.

Okay so, I wrote a solution and it passed all the test cases, but I get an error in the end saying:
Traceback:
in
in unique_in_order
TypeError: expected string or buffer

I'm not sure how to correct it since the test results indicate Time: 59ms Passed: 8 Failed: 0
Has anyone encountered this before?

I have a new problem

Test Results:
lets test it
should work with empty array (1 Passed, 0 Failed)
should work with one element (1 Passed, 0 Failed)
should reduce duplicates (5 Passed, 0 Failed)
and treat lowercase as different from uppercase (1 Passed, 0 Failed)
and work with int arrays
STDERR:
Traceback:
in
in unique_in_order
TypeError: 'int' object is not iterable

what is that meaning ?

ok i think i know whats wrong.

HI
The instruction says:

unique_in_order('AAAABBBCCDAABBB') == ['A', 'B', 'C', 'D', 'A', 'B']
unique_in_order('ABBCcAD') == ['A', 'B', 'C', 'c', 'A', 'D']
unique_in_order([1,2,2,3,3]) == [1,2,3]

shall be ok.

I made a function that gives ['A', 'B', 'C', 'D', 'A', 'B']
for unique_in_order('AAAABBBCCDAABBB')

but the test says :
Test Results:
✘ None should equal ['A', 'B', 'C', 'D', 'A', 'B']

what is the problem of this thing ?