ch15 スマートポインタの和訳を最新版に更新

rust-lang/book@19c40bf

Author: shinmili

dot/trpl15-04.dot

@@ -0,0 +1,16 @@
+digraph {
+    node[shape=record];
+    rankdir=LR;
+
+    l1[label="{<data> 5| <next>}"];
+    l2[label="{<data> 10| <next>}"];
+
+    {node[shape=point height=0] invisible_start invisible_end}
+
+    a -> l1:n;
+    b -> l2:n;
+    invisible_start:n -> l1[arrowtail=none];
+    invisible_start:s -> invisible_end:s[dir=none];
+    l1:next:c -> l2:data;
+    l2:next:c -> invisible_end:n[arrowhead=none];
+}

listings/ch15-smart-pointers/listing-15-01/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "box-example"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-02/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "cons-list"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-03/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "cons-list"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-03/output.txt

@@ -1,28 +1,19 @@
 $ cargo run
    Compiling cons-list v0.1.0 (file:///projects/cons-list)
 error[E0072]: recursive type `List` has infinite size
+(エラー: 再帰的な型`List`は無限のサイズを持ちます)
  --> src/main.rs:1:1
   |
 1 | enum List {
-  | ^^^^^^^^^ recursive type has infinite size
+  | ^^^^^^^^^
 2 |     Cons(i32, List),
   |               ---- recursive without indirection
   |
-  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to make `List` representable
-
-error[E0391]: cycle detected when processing `List`
- --> src/main.rs:1:1
-  |
-1 | enum List {
-  | ^^^^^^^^^
+help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
+(ヘルプ: 何らかの間接参照(例: `Box`、`Rc`、あるいは`&`)を挿入して、循環参照を断ち切ってください)
   |
-  = note: ...which again requires processing `List`, completing the cycle
-  = note: cycle used when computing dropck types for `Canonical { max_universe: U0, variables: [], value: ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing, def_id: None }, value: List } }`
-
-error: aborting due to 2 previous errors
-
-Some errors have detailed explanations: E0072, E0391.
-For more information about an error, try `rustc --explain E0072`.
-error: could not compile `cons-list`.
+2 |     Cons(i32, Box<List>),
+  |               ++++    +
 
-To learn more, run the command again with --verbose.
+For more information about this error, try `rustc --explain E0072`.
+error: could not compile `cons-list` (bin "cons-list") due to 1 previous error

listings/ch15-smart-pointers/listing-15-05/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "cons-list"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-06/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "deref-example"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-07/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "deref-example"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-08/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "deref-example"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch15-smart-pointers/listing-15-09/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "deref-example"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]