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scala> val x1 = 1
x1: Int = 1
scala> val x2 = 2
x2: Int = 2
scala> val x3 = 3
x3: Int = 3
scala> case class BippyBungus()
defined class BippyBungus
scala> x1 + x2 + x3
res0: Int = 6
scala> :reset
Resetting interpreter state.
Forgetting this session history:
val x1 = 1
val x2 = 2
val x3 = 3
case class BippyBungus()
x1 + x2 + x3
Forgetting all expression results and named terms: $intp, BippyBungus, x1, x2, x3
Forgetting defined types: BippyBungus
scala> x1 + x2 + x3
<console>:12: error: not found: value x1
x1 + x2 + x3
^
<console>:12: error: not found: value x2
x1 + x2 + x3
^
<console>:12: error: not found: value x3
x1 + x2 + x3
^
scala> val x1 = 4
x1: Int = 4
scala> new BippyBungus
<console>:12: error: not found: type BippyBungus
new BippyBungus
^
scala> class BippyBungus() { def f = 5 }
defined class BippyBungus
scala> { new BippyBungus ; x1 }
res2: Int = 4
scala> :quit
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