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dart
/
sdk.git
/
f36420a912bb76b61fc8b934286df44dd1aff09b
/
.
/
pkg
/
front_end
/
parser_testcases
/
nnbd
/
issue_39723.dart
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class
A
{
operator
[](
int
index
)
=>
index
;
}
main
()
{
A
?
a
=
null
;
a
!?.
toString
();
a
!?.[
42
];
a
!?[
42
];
a
!
?
[
42
];
}