chore: add flatmap example (#68) #174

	name: Rust

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	name: Unit Tests
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v2

	- name: Set up Rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	override: true

	- name: Cache Cargo dependencies
	uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

	- name: Install protoc (for Protocol Buffers)
	run: \|
	set -eux -o pipefail
	PROTOC_VERSION=3.19.4
	PROTOC_ZIP=protoc-$PROTOC_VERSION-linux-x86_64.zip
	curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOC_VERSION/$PROTOC_ZIP
	sudo unzip -o $PROTOC_ZIP -d /usr/local bin/protoc
	sudo unzip -o $PROTOC_ZIP -d /usr/local 'include/*'
	sudo chmod +x /usr/local/bin/protoc
	sudo find /usr/local/include -type f \| xargs sudo chmod a+r
	sudo find /usr/local/include -type d \| xargs sudo chmod a+rx
	rm -f $PROTOC_ZIP

	- name: Build
	run: cargo build --verbose

	- name: Run tests
	run: cargo test --verbose

	- name: Check formatting
	run: cargo fmt --all -- --check

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