JBirk/ImageHash — comment on commit f8fa782b478bdf020521969e32cdc66488b8d800
File:  line 0
By JBirk:

Basically, 'is not' is an origin check while '!=' is a value check.

I was checking if strings of different origin had the same origin. They didn't, but the values were the same, so I needed to compare the values.