Direction.Up
is 0
, Direction.Down
is 1
and so on...Seasons[Seasons["Summer"] = 0] = "Summer";
. To understand this line we just need to analyze Seasons["Summer"] = 0
, here we can see that it assigns value 0
to the Seasons.Summer
, then we know that assignment operator returns the assigned value, so further execution is Seasons[0] = "Summer"
.Up
is initilized with 1
, others have auto-incremented value from that point. Direction.Down
has value 2
, Direction.Left
has 3
, Direction.Right
has 4
.