retronym commented on pull request #28463:
URL: https://github.com/apache/spark/pull/28463#issuecomment-625185257
> Maybe tweaking `ReplSuite` a bit can make it happen.
Alternatively, you can dynamically change (most) compiler settings in the
REPL.
```
scala> :settings -Ydelambdafy:inline
scala> class CInline { def test = () => 42 }
class CInline
scala> :javap -c CInline#test
public scala.Function0<java.lang.Object> test();
Code:
0: new #13 // class
$line6/$read$$iw$CInline$$anonfun$test$1
3: dup
4: aload_0
5: invokespecial #22 // Method
$line6/$read$$iw$CInline$$anonfun$test$1."<init>":(L$line6/$read$$iw$CInline;)V
```
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