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doc(testcase_linked_list): add a little extra note about pattern #1408

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3 changes: 3 additions & 0 deletions src/custom_types/enum/testcase_linked_list.md
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@ impl List {
// depends on the variant of `self`
// `self` has type `&List`, and `*self` has type `List`, matching on a
// concrete type `T` is preferred over a match on a reference `&T`
// after Rust 2018 you can use self here and tail (with no ref) below as well,
// rust will infer &s and ref tail.
// See https://doc.rust-lang.org/edition-guide/rust-2018/ownership-and-lifetimes/default-match-bindings.html
match *self {
// Can't take ownership of the tail, because `self` is borrowed;
// instead take a reference to the tail
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