trungnt13 · January 3, 2026 14:09 · Jun 11, 2024 · Jun 11, 2024 · Jun 11, 2024 · Jun 11, 2024
diff --git a/Rust.md b/Rust.md
@@ -89,8 +89,6 @@ Too many `Cargo.toml` files in the workspace, set this:
     "CARGO_HOME": "/home/tngo/codes/ml3x/insim/build/.cargo"
 },
 ```
-
-
 ---
 
 ## Control Flow

diff --git a/Rust.md b/Rust.md
@@ -4,6 +4,7 @@
   - [VSCode and rust-analyzer](#vscode-and-rust-analyzer)
     - [rust-analyzer failed to discover workspace](#rust-analyzer-failed-to-discover-workspace)
     - [rust-analyzer block build](#rust-analyzer-block-build)
+    - [rust-analyzer CARGO\_HOME](#rust-analyzer-cargo_home)
   - [Control Flow](#control-flow)
     - [If-then-else](#if-then-else)
     - [Match](#match)
@@ -81,6 +82,15 @@ Too many `Cargo.toml` files in the workspace, set this:
 ]
 ```
 
+### rust-analyzer CARGO_HOME
+
+```json
+"rust-analyzer.server.extraEnv": {
+    "CARGO_HOME": "/home/tngo/codes/ml3x/insim/build/.cargo"
+},
+```
+
+
 ---
 
 ## Control Flow

diff --git a/Rust.md b/Rust.md
@@ -3,6 +3,7 @@
 - [Rust](#rust)
   - [VSCode and rust-analyzer](#vscode-and-rust-analyzer)
     - [rust-analyzer failed to discover workspace](#rust-analyzer-failed-to-discover-workspace)
+    - [rust-analyzer block build](#rust-analyzer-block-build)
   - [Control Flow](#control-flow)
     - [If-then-else](#if-then-else)
     - [Match](#match)

diff --git a/Rust.md b/Rust.md
@@ -75,7 +75,9 @@ Too many `Cargo.toml` files in the workspace, set this:
 ### rust-analyzer block build
 
 ```json
-"rust-analyzer.cargo.loadOutDirsFromCheck": true
+"rust-analyzer.check.extraArgs": [
+    "--target-dir=target/rust-analyzer"
+]
 ```
 
 ---

diff --git a/Rust.md b/Rust.md
@@ -78,7 +78,6 @@ Too many `Cargo.toml` files in the workspace, set this:
 "rust-analyzer.cargo.loadOutDirsFromCheck": true
 ```
 
-
 ---
 
 ## Control Flow

diff --git a/Rust.md b/Rust.md
@@ -72,6 +72,13 @@ Too many `Cargo.toml` files in the workspace, set this:
 ]
 ```
 
+### rust-analyzer block build
+
+```json
+"rust-analyzer.cargo.loadOutDirsFromCheck": true
+```
+
+
 ---
 
 ## Control Flow

diff --git a/Rust.md b/Rust.md
@@ -241,6 +241,7 @@ fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
     let y = &x[0]; // OK
     let z = y.unwrap(); // ERROR: cannot move out of y because it's borrowed reference
+    let z = (*y).unwrap(); // ERROR: same as above, automatic dereference here
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -240,7 +240,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
     let y = &x[0]; // OK
-    let z0 = y.unwrap(); // ERROR: cannot move out of y because it's borrowed reference
+    let z = y.unwrap(); // ERROR: cannot move out of y because it's borrowed reference
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -240,7 +240,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
     let y = &x[0]; // OK
-    let z0 = y.clone().unwrap(); // ERROR: cannot move out of y because it's borrowed reference
+    let z0 = y.unwrap(); // ERROR: cannot move out of y because it's borrowed reference
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -240,7 +240,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
     let y = &x[0]; // OK
-    let z0 = y.clone().unwrap(); // ERROR: cannot move out of y because it's borrowed
+    let z0 = y.clone().unwrap(); // ERROR: cannot move out of y because it's borrowed reference
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -239,8 +239,8 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-    let y = x[0].unwrap(); // ERROR: cannot move out of x
     let y = &x[0]; // OK
+    let z0 = y.clone().unwrap(); // ERROR: cannot move out of y because it's borrowed
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -239,7 +239,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-    let y = x[0].unwrap(); // ERROR
+    let y = x[0].unwrap(); // ERROR: cannot move out of x
     let y = &x[0]; // OK
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK

diff --git a/Rust.md b/Rust.md
@@ -239,7 +239,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-    let y = x[0]
+    let y = x[0].unwrap(); // ERROR
     let y = &x[0]; // OK
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK

diff --git a/Rust.md b/Rust.md
@@ -239,6 +239,8 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
+    let y = x[0]
+    let y = &x[0]; // OK
     let z0: String = x[0].clone().unwrap(); // OK
     let z1: &String = x[0].as_ref().unwrap(); // OK
 }

diff --git a/Rust.md b/Rust.md
@@ -239,9 +239,8 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-    let z0: String = x[0].clone().unwrap();
-    let z1 = x[0].as_ref().unwrap();
-
+    let z0: String = x[0].clone().unwrap(); // OK
+    let z1: &String = x[0].as_ref().unwrap(); // OK
 }
 ```
 

diff --git a/Rust.md b/Rust.md
@@ -239,7 +239,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-    let z0 = x[0].clone().unwrap();
+    let z0: String = x[0].clone().unwrap();
     let z1 = x[0].as_ref().unwrap();
 
 }

diff --git a/Rust.md b/Rust.md
@@ -239,7 +239,7 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
-        let z0 = x[0].clone().unwrap();
+    let z0 = x[0].clone().unwrap();
     let z1 = x[0].as_ref().unwrap();
 
 }

diff --git a/Rust.md b/Rust.md
@@ -239,6 +239,9 @@ When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the ar
 ```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
+        let z0 = x[0].clone().unwrap();
+    let z1 = x[0].as_ref().unwrap();
+
 }
 ```
 

diff --git a/Rust.md b/Rust.md
@@ -235,8 +235,8 @@ Compiler ensures:
 
 In Rust, variables are moved by default when you assign them to another variable or pass them to a function. This means that the original variable can no longer be used after the move.
 When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the array. This is not allowed because the size of the array is fixed, and moving an element out would leave a hole.
-```rust
 
+```rust
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
 }

diff --git a/Rust.md b/Rust.md
@@ -234,9 +234,9 @@ Compiler ensures:
 ### Move Out of an Array
 
 In Rust, variables are moved by default when you assign them to another variable or pass them to a function. This means that the original variable can no longer be used after the move.
-
+When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the array. This is not allowed because the size of the array is fixed, and moving an element out would leave a hole.
 ```rust
-// When you assign `x[0]` to `y`, you are moving the `Option<String>` out of the array. This is not allowed because the size of the array is fixed, and moving an element out would leave a hole.
+
 fn pr(x: [Option<String>; 4]) {
     let y = x[0]; // ERROR
 }
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