Put "def" Outside of Loops

Since the calculation counts the objects count whenever a new instance is created, you may reach the limit and get an error about too many instances. To avoid this problem, put "def" outside the loops or closures.

So instead of doing:

Too many instances

for (record in records) {
  def cost = ....
}

Use this approach:

Safer approach

def cost
for (record in records) {
  cost = ....
}