to clarify, (i hope):
`==` compares values.
let a = 99 #99 is in some slot in memory (a.addr)
let b = 99 #99 is in another slot in memory (b.addr)
a == b # true, the value in slot a is the same as the value in slot b
Run
`==` compares values even for refs
type A = ref object
x:int
let a,b = A(x: 99) #create two A(x: 99)'s somewhere in memory and put their
addresses in a and b.
let c = a #put the value of a (the memory location of the first A(x: 99))
into c
echo c==a #is the value of c equal to the value of a? yes, they both
contain the same address
echo c==b #is the value of c equal to the value of b? no, they refer to
different A's
echo c[]==b[] #is the value referred to by c the same as the value referred
to by b? yes! c.x==b.x
c.x = 97
assert a.x==97 #changing c changed a as well, they are two references to
the same object
Run
