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ja: Translate Chapter 60 (Shared State) (#1690)
Hi, ja translation team (#652 ). Here's an MR for the chapter "Shared States." Could you review the translations? any feedback would be appreciated. Thank you 😄 cc: @keiichiw , @chikoski , @HidenoriKobayashi , @ternbusty (Retrieved translaftion draft #1636 Chapter 60 draft, after recent `ja.po` file refresh #1676 )
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Kanta Yamaoka (山岡幹太)
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po/ja.po
@ -18290,6 +18290,8 @@ msgid ""
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"Rust uses the type system to enforce synchronization of shared data. This is "
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"primarily done via two types:"
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msgstr ""
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"Rustは共有データを確実に同期するために型システムを利用します。これは主に2つの"
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"型により行われます："
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#: src/concurrency/shared_state.md:6
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msgid ""
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@ -18297,18 +18299,25 @@ msgid ""
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"reference counted `T`: handles sharing between threads and takes care to "
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"deallocate `T` when the last reference is dropped,"
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msgstr ""
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"[`Arc<T>`](https://doc.rust-lang.org/std/sync/struct.Arc.html), atomic "
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"reference counted `T` : スレッド間の共有を扱い、最後の参照がドロップされたと"
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"き `T` をデアロケートすることを担当する、"
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#: src/concurrency/shared_state.md:8
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msgid ""
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"[`Mutex<T>`](https://doc.rust-lang.org/std/sync/struct.Mutex.html): ensures "
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"mutually exclusive access to the `T` value."
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msgstr ""
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"[`Mutex<T>`](https://doc.rust-lang.org/std/sync/struct.Mutex.html): `T`型の値"
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"への相互排他的なアクセスを保証する。"
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#: src/concurrency/shared_state/arc.md:3
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msgid ""
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"[`Arc<T>`](https://doc.rust-lang.org/std/sync/struct.Arc.html) allows shared "
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"read-only access via `Arc::clone`:"
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msgstr ""
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"[`Arc<T>`](https://doc.rust-lang.org/std/sync/struct.Arc.html) は読み取り専用"
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"の共有アクセスを`Arc::clone`により可能にします："
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#: src/concurrency/shared_state/arc.md:16
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msgid "\"{thread_id:?}: {v:?}\""
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@ -18325,28 +18334,37 @@ msgid ""
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"`Arc` stands for \"Atomic Reference Counted\", a thread safe version of `Rc` "
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"that uses atomic operations."
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msgstr ""
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"`Arc` は\"Atomic Reference Counted\"の略で、アトミック操作を利用するという点"
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"で、`Rc`がスレッド安全になったバージョンのようなものです。"
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#: src/concurrency/shared_state/arc.md:31
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msgid ""
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"`Arc<T>` implements `Clone` whether or not `T` does. It implements `Send` "
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"and `Sync` if and only if `T` implements them both."
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msgstr ""
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"`Arc<T>` は `Clone` を実装します。このことは`T`が`Clone`を実装するしないに関"
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"係ありません。`T`が`Send`と`Sync`の両方を実装している場合で、かつその場合に限"
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"り、`Arc<T>` は両者を実装します。"
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#: src/concurrency/shared_state/arc.md:33
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msgid ""
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"`Arc::clone()` has the cost of atomic operations that get executed, but "
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"after that the use of the `T` is free."
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msgstr ""
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"`Arc::clone()`にはアトミック操作のコストがかかります。ただ、その後は、`T`の利"
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"用に関するコストはかかりません。"
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#: src/concurrency/shared_state/arc.md:35
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msgid ""
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"Beware of reference cycles, `Arc` does not use a garbage collector to detect "
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"them."
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msgstr ""
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"参照サイクルに気をつけてください。`Arc` には参照サイクルを検知するためのガ"
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"ベージコレクタはありません。"
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#: src/concurrency/shared_state/arc.md:37
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msgid "`std::sync::Weak` can help."
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msgstr ""
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msgstr "`std::sync::Weak` が役立ちます。"
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#: src/concurrency/shared_state/mutex.md:3
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msgid ""
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@ -18354,6 +18372,9 @@ msgid ""
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"mutual exclusion _and_ allows mutable access to `T` behind a read-only "
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"interface:"
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msgstr ""
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"[`Mutex<T>`](https://doc.rust-lang.org/std/sync/struct.Mutex.html) は相互排他"
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"を保証し、 _かつ_ 読み取り専用のインターフェースの裏側で `T` へのミュータブル"
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"なアクセスを可能にします："
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#: src/concurrency/shared_state/mutex.md:11
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#: src/concurrency/shared_state/mutex.md:18
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@ -18366,38 +18387,50 @@ msgid ""
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"lang.org/std/sync/struct.Mutex.html#impl-Sync-for-Mutex%3CT%3E) blanket "
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"implementation."
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msgstr ""
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"[`impl<T: Send> Sync for Mutex<T>`](https://doc.rust-lang.org/std/sync/"
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"struct.Mutex.html#impl-Sync-for-Mutex%3CT%3E) のブランケット実装があることに"
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"注目してください。"
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#: src/concurrency/shared_state/mutex.md:31
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msgid ""
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"`Mutex` in Rust looks like a collection with just one element --- the "
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"protected data."
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msgstr ""
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"Rustにおける`Mutex`とは、保護されるデータである、たった一つの要素から構成され"
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"たコレクションのようなものです。"
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#: src/concurrency/shared_state/mutex.md:33
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msgid ""
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"It is not possible to forget to acquire the mutex before accessing the "
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"protected data."
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msgstr ""
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"保護されたデータにアクセスする前に、ミューテックスを確保し忘れることはありま"
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"せん。"
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#: src/concurrency/shared_state/mutex.md:35
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msgid ""
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"You can get an `&mut T` from an `&Mutex<T>` by taking the lock. The "
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"`MutexGuard` ensures that the `&mut T` doesn't outlive the lock being held."
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msgstr ""
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"`&Mutex<T>` からロックを取得することで、`&mut T`を得ることができます。この"
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"`MutexGuard`は`&mut T`が保持されているロックよりも長く存続しないことを保証し"
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"ます。"
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#: src/concurrency/shared_state/mutex.md:37
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msgid ""
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"`Mutex<T>` implements both `Send` and `Sync` iff (if and only if) `T` "
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"implements `Send`."
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msgstr ""
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"`T`が`Send`を実装している場合で、かつその場合に限り、`Mutex<T>` は`Send`と"
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"`Sync`の両方を実装します。"
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#: src/concurrency/shared_state/mutex.md:39
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msgid "A read-write lock counterpart: `RwLock`."
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msgstr ""
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msgstr "読み書きのロックの場合に対応するものがあります： `RwLock`。"
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#: src/concurrency/shared_state/mutex.md:40
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msgid "Why does `lock()` return a `Result`?"
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msgstr ""
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msgstr "なぜ`lock()`は`Result`を返すのでしょう？"
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#: src/concurrency/shared_state/mutex.md:41
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msgid ""
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@ -18407,10 +18440,16 @@ msgid ""
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"[`PoisonError`](https://doc.rust-lang.org/std/sync/struct.PoisonError.html). "
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"You can call `into_inner()` on the error to recover the data regardless."
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msgstr ""
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"Mutex`を保持したスレッドがパニックを起こした場合、保護すべきデータが整合性の"
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"欠けた状態にある可能性を伝えるため、`Mutex`は「ポイゾンされた」"
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"（\"poisoned\"）状態になります。ポイゾンされたMutexに対して `lock()` をコール"
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"すると、[`PoisonError`](https://doc.rust-lang.org/std/sync/struct."
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"PoisonError.html)とともに失敗します。`into_inner()` を用いることで、そのエ"
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"ラーにおいて、とりあえずデータを回復することはできます。"
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#: src/concurrency/shared_state/example.md:3
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msgid "Let us see `Arc` and `Mutex` in action:"
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msgstr ""
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msgstr "`Arc` と `Mutex` の動作を見てみましょう："
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#: src/concurrency/shared_state/example.md:6
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msgid "// use std::sync::{Arc, Mutex};\n"
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@ -18418,35 +18457,42 @@ msgstr ""
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#: src/concurrency/shared_state/example.md:23
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msgid "Possible solution:"
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msgstr ""
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msgstr "考えられる対処法："
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#: src/concurrency/shared_state/example.md:49
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msgid "Notable parts:"
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msgstr ""
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msgstr "注目するとよい箇所："
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#: src/concurrency/shared_state/example.md:51
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msgid ""
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"`v` is wrapped in both `Arc` and `Mutex`, because their concerns are "
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"orthogonal."
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msgstr ""
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"`v`は `Arc` と `Mutex`の両方でラップされています。なぜなら、それらの関心は互"
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"いに独立なものであるからです。"
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#: src/concurrency/shared_state/example.md:53
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msgid ""
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"Wrapping a `Mutex` in an `Arc` is a common pattern to share mutable state "
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"between threads."
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msgstr ""
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"`Mutex`を`Arc`でラップすることは、スレッド間でミュータブルな状態を共有するた"
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"めによく見られるパターンです。"
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#: src/concurrency/shared_state/example.md:55
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msgid ""
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"`v: Arc<_>` needs to be cloned as `v2` before it can be moved into another "
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"thread. Note `move` was added to the lambda signature."
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msgstr ""
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"`v: Arc<_>`は別のスレッドにムーブされる前に、`v2`としてクローンされる必要があ"
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"ります。`move` がラムダ式に追加されたことに注意してください。"
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#: src/concurrency/shared_state/example.md:57
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msgid ""
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"Blocks are introduced to narrow the scope of the `LockGuard` as much as "
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"possible."
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msgstr ""
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"ブロックは`LockGuard`のスコープを可能な限り狭めるために導入されています。"
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#: src/exercises/concurrency/morning.md:3
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msgid "Let us practice our new concurrency skills with"
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