init jnv project

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/rust:1-1-bullseye
+
+# Clang 15
+RUN apt-get update \
+  && apt-get install -y \
+    build-essential \
+    autoconf \
+    libtool \
+    git \
+    wget \
+    software-properties-common \
+  && wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|apt-key add - \
+  && apt-add-repository "deb http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-15 main" \
+  && apt-get update \
+  && apt-get install -y clang-15 lldb-15 lld-15 \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN ln -s /usr/bin/clang-15 /usr/bin/clang \
+  && ln -s /usr/bin/clang++-15 /usr/bin/clang++

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/rust
+{
+	"name": "Rust",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	// "image": "mcr.microsoft.com/devcontainers/rust:1-1-bullseye",
+	"build": {
+		// Path is relative to the devcontainer.json file.
+		"dockerfile": "Dockerfile"
+	},
+
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"rust-lang.rust-analyzer"
+			]
+		}
+	}
+
+	// Use 'mounts' to make the cargo cache persistent in a Docker Volume.
+	// "mounts": [
+	// 	{
+	// 		"source": "devcontainer-cargo-cache-${devcontainerId}",
+	// 		"target": "/usr/local/cargo",
+	// 		"type": "volume"
+	// 	}
+	// ]
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "rustc --version",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.github/workflows/ci.yml

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+name: ci
+
+on: [push]
+
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+      - name: Install clang package
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            build-essential \
+            autoconf \
+            libtool \
+            git \
+            wget \
+            software-properties-common
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+          sudo apt-add-repository "deb http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-15 main"
+          sudo apt-get update
+          sudo apt-get install -y \
+            clang-15 \
+            lldb-15 \
+            lld-15
+      - name: Set default compiler to clang
+        run: |
+          echo "CC=clang-15" >> $GITHUB_ENV
+          echo "CXX=clang++-15" >> $GITHUB_ENV
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: rustfmt, clippy
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: -- --nocapture --format pretty
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --examples
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --bins