### Install via Mint

Source: https://github.com/realm/swiftlint/blob/main/README.md

Install SwiftLint using the Mint package manager.

```bash
mint install realm/SwiftLint
```

--------------------------------

### Install via Homebrew

Source: https://github.com/realm/swiftlint/blob/main/README.md

Install the SwiftLint binary using the Homebrew package manager.

```bash
brew install swiftlint
```

--------------------------------

### Pass Multiple Configurations via Command Line

Source: https://github.com/realm/swiftlint/blob/main/README.md

Example of running SwiftLint with multiple configuration files specified in the command line.

```bash
swiftlint --config .swiftlint.yml --config .swiftlint_child.yml
```

--------------------------------

### Install Buildkite agent and tools via Homebrew

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Run this command on a new MacStadium worker to install necessary dependencies including aria2, bazelisk, and the Buildkite agent.

```bash
brew install aria2 bazelisk htop buildkite/buildkite/buildkite-agent robotsandpencils/made/xcodes
```

--------------------------------

### Define rule examples with focus

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Use the #examples macro to define triggering and non-triggering test cases. Marking an example with .focused() restricts test execution to only those marked examples.

```swift
nonTriggeringExamples: #examples([
    "let x: [Int]",
    "let x: [Int: String]".focused(),   // Only this one will be run in tests.
]),
triggeringExamples: #examples([
    "let x: ↓Array<String>",
    "let x: ↓Dictionary<Int, String>",
])
```

--------------------------------

### Install Xcode via xcodes

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Updates the xcodes tool and installs a specific version of Xcode.

```bash
xcodes update && xcodes install 14.0.0
```

--------------------------------

### Define Local Child and Parent Configurations

Source: https://github.com/realm/swiftlint/blob/main/README.md

Example file structure and the corresponding YAML configuration referencing local parent and child files.

```txt
ProjectRoot
    |_ .swiftlint.yml
    |_ .swiftlint_refinement.yml
    |_ Base
        |_ .swiftlint_base.yml
```

```yaml
child_config: .swiftlint_refinement.yml
parent_config: Base/.swiftlint_base.yml
```

--------------------------------

### Define Team-Wide and Project-Specific Configurations

Source: https://github.com/realm/swiftlint/blob/main/README.md

Examples of YAML configurations for shared team rules and project-specific overrides.

```yaml
disabled_rules:
  - force_cast
```

```yaml
opt_in_rules:
  - force_cast
```

--------------------------------

### Integrate SwiftLint via CocoaPods

Source: https://github.com/realm/swiftlint/blob/main/README.md

Executes the SwiftLint binary provided by the CocoaPods installation.

```bash
"${PODS_ROOT}/SwiftLint/swiftlint"
```

--------------------------------

### Reference Remote Configuration

Source: https://github.com/realm/swiftlint/blob/main/README.md

Example of referencing a remote configuration file via URL in a .swiftlint.yml file.

```yaml
parent_config: https://myteamserver.com/our-base-swiftlint-config.yml
```

--------------------------------

### Build and debug SwiftLint via command line

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Commands for building the project, running the binary, and attaching the LLDB debugger.

```shell
swift build [-c release]
```

```shell
swift run [-c release] [swiftlint] [arguments]
```

```shell
.build/[release|debug]/swiftlint
```

```shell
lldb -- .build/[release|debug]/swiftlint [arguments]
```

--------------------------------

### Display SwiftLint help information

Source: https://github.com/realm/swiftlint/blob/main/README.md

View the overview, usage, options, and subcommands available in the SwiftLint CLI.

```txt
$ swiftlint help
OVERVIEW: A tool to enforce Swift style and conventions.

USAGE: swiftlint <subcommand>

OPTIONS:
  --version               Show the version.
  -h, --help              Show help information.

SUBCOMMANDS:
  analyze                 Run analysis rules
  docs                    Open SwiftLint documentation website in the default web browser
  generate-docs           Generates markdown documentation for selected group of rules
  lint (default)          Print lint warnings and errors
  baseline                Operations on existing baselines
  reporters               Display the list of reporters and their identifiers
  rules                   Display the list of rules and their identifiers
  version                 Display the current version of SwiftLint

  See 'swiftlint help <subcommand>' for detailed help.
```

--------------------------------

### Run SwiftLint with Bazel

Source: https://github.com/realm/swiftlint/blob/main/README.md

Execute SwiftLint in the current directory using Bazel.

```console
bazel run -c opt @SwiftLint//:swiftlint
```

--------------------------------

### Open project in Xcode

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Command to open the current directory in Xcode.

```shell
xed .
```

--------------------------------

### Run SwiftLint with Docker

Source: https://github.com/realm/swiftlint/blob/main/README.md

Commands to pull the SwiftLint Docker image and execute it against the current working directory.

```bash
docker pull ghcr.io/realm/swiftlint:latest
```

```bash
docker run -it -v `pwd`:`pwd` -w `pwd` ghcr.io/realm/swiftlint:latest
```

```bash
$ docker run -it -v `pwd`:`pwd` -w `pwd` ghcr.io/realm/swiftlint:latest
Linting Swift files in current working directory
Linting 'RuleDocumentation.swift' (1/490)
...
Linting 'YamlSwiftLintTests.swift' (490/490)
Done linting! Found 0 violations, 0 serious in 490 files.
```

--------------------------------

### Configure Git pre-commit Hook

Source: https://github.com/realm/swiftlint/blob/main/README.md

Add SwiftLint to your .pre-commit-config.yaml file to automate linting in your repository.

```yaml
repos:
  - repo: https://github.com/realm/SwiftLint
    rev: 0.57.1
    hooks:
      - id: swiftlint
```

```yaml
- repo: https://github.com/realm/SwiftLint
  rev: 0.57.1
  hooks:
    - id: swiftlint
      entry: swiftlint --fix --strict
```

--------------------------------

### Run project tests

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Commands to execute the test suite using various build systems.

```shell
xcodebuild -scheme swiftlint test -destination 'platform=macOS'
swift test
make bazel_test
make docker_test
```

--------------------------------

### Configure Bazel Dependency

Source: https://github.com/realm/swiftlint/blob/main/README.md

Add SwiftLint to your Bazel project configuration.

```bzl
bazel_dep(name = "swiftlint", version = "0.52.4", repo_name = "SwiftLint")
```

```bzl
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "build_bazel_rules_apple",
    sha256 = "390841dd5f8a85fc25776684f4793d56e21b098dfd7243cd145b9831e6ef8be6",
    url = "https://github.com/bazelbuild/rules_apple/releases/download/2.4.1/rules_apple.2.4.1.tar.gz",
)

load(
    "@build_bazel_rules_apple//apple:repositories.bzl",
    "apple_rules_dependencies",
)

apple_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:repositories.bzl",
    "swift_rules_dependencies",
)

swift_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:extras.bzl",
    "swift_rules_extra_dependencies",
)

swift_rules_extra_dependencies()

http_archive(
    name = "SwiftLint",
    sha256 = "c6ea58b9c72082cdc1ada4a2d48273ecc355896ed72204cedcc586b6ccb8aca6",
    url = "https://github.com/realm/SwiftLint/releases/download/0.52.4/bazel.tar.gz",
)

load("@SwiftLint//bazel:repos.bzl", "swiftlint_repos")

swiftlint_repos()

load("@SwiftLint//bazel:deps.bzl", "swiftlint_deps")

swiftlint_deps()
```

--------------------------------

### Open project in Visual Studio Code

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Command to open the current directory in Visual Studio Code.

```shell
code .
```

--------------------------------

### Create Symbolic Link for SwiftLint

Source: https://github.com/realm/swiftlint/blob/main/README.md

Creates a symlink in /usr/local/bin to allow Xcode to locate the Homebrew-installed SwiftLint binary.

```bash
ln -s /opt/homebrew/bin/swiftlint /usr/local/bin/swiftlint
```

--------------------------------

### Configure SwiftLint as an Xcode Run Script Build Phase

Source: https://github.com/realm/swiftlint/blob/main/README.md

Standard shell script to execute SwiftLint during the build process, providing a fallback warning if the command is not found.

```bash
if command -v swiftlint >/dev/null 2>&1
then
    swiftlint
else
    echo "warning: `swiftlint` command not found - See https://github.com/realm/SwiftLint#installation for installation instructions."
fi
```

--------------------------------

### Execute SwiftLint in a Swift Package

Source: https://github.com/realm/swiftlint/blob/main/README.md

Script to locate and execute the SwiftLint binary within a Swift package's artifact bundle.

```bash
SWIFT_PACKAGE_DIR="${SWIFT_PACKAGE_DIR:-${BUILD_DIR%Build/*}SourcePackages}"
SWIFTLINT_CMD="$SWIFT_PACKAGE_DIR/artifacts/swiftlintplugins/SwiftLintBinary/SwiftLintBinary.artifactbundle/macos/swiftlint"

if test -f "$SWIFTLINT_CMD" 2>&1
then
    "$SWIFTLINT_CMD"
else
    echo "warning: `swiftlint` command not found - See https://github.com/realm/SwiftLint#xcode-run-script-build-phase for installation instructions."
fi
```

--------------------------------

### Configure PATH for Apple Silicon Homebrew

Source: https://github.com/realm/swiftlint/blob/main/README.md

Updates the PATH environment variable to include the Homebrew binary directory on Apple Silicon architectures.

```bash
if [[ "$(uname -m)" == arm64 ]]
then
    export PATH="/opt/homebrew/bin:$PATH"
fi

if command -v swiftlint >/dev/null 2>&1
then
    swiftlint
else
    echo "warning: `swiftlint` command not found - See https://github.com/realm/SwiftLint#installation for installation instructions."
fi
```

--------------------------------

### Configure rules in .swiftlint.yml

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Define rule-specific settings and severity levels within the project's YAML configuration file.

```yaml
force_cast: warning

file_length:
  warning: 800
  error: 1200

identifier_name:
  min_length:
    warning: 3
    error: 2
  max_length: 20
  excluded: id
```

--------------------------------

### Add to CocoaPods Podfile

Source: https://github.com/realm/swiftlint/blob/main/README.md

Include SwiftLint in your Podfile to manage it via CocoaPods.

```ruby
pod 'SwiftLint'
```

--------------------------------

### Run SwiftLint via Command Plugin

Source: https://github.com/realm/swiftlint/blob/main/README.md

Execute the SwiftLint command plugin from the terminal within a Swift package project.

```shell
swift package plugin swiftlint
```

--------------------------------

### Configure SwiftLint in Fastlane

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use the official SwiftLint action within a Fastlane lane to lint or autocorrect Swift files.

```ruby
swiftlint(
    mode: :lint,                            # SwiftLint mode: :lint (default) or :autocorrect
    executable: "Pods/SwiftLint/swiftlint", # The SwiftLint binary path (optional). Important if you've installed it via CocoaPods
    path: "/path/to/lint",                  # Specify path to lint (optional)
    output_file: "swiftlint.result.json",   # The path of the output file (optional)
    reporter: "json",                       # The custom reporter to use (optional)
    config_file: ".swiftlint-ci.yml",       # The path of the configuration file (optional)
    files: [                                # List of files to process (optional)
        "AppDelegate.swift",
        "path/to/project/Model.swift"
    ],
    ignore_exit_status: true,               # Allow fastlane to continue even if SwiftLint returns a non-zero exit status (Default: false)
    quiet: true,                            # Don't print status logs like 'Linting ' & 'Done linting' (Default: false)
    strict: true                            # Fail on warnings? (Default: false)
)
```

--------------------------------

### Define Regex Custom Rules

Source: https://github.com/realm/swiftlint/blob/main/README.md

Configure custom linting rules using regular expressions within the SwiftLint configuration file.

```yaml
custom_rules:
  # Rule identifier.
  pirates_beat_ninjas:
    # Optional regex that defines paths to include during linting.
    included:
      - ".*\\.swift"
    # Optional regex that defines paths to exclude during linting.
    excluded:
      - ".*Test\\.swift"
    # Optional rule name.
    name: "Pirates Beat Ninjas"
    # Matching pattern.
    regex: "([nN]inja)"
    # Number of regex capture group to highlight the rule violation at. Optional, defaults to 0 (the whole match).
    capture_group: 0
    # SyntaxKinds to match. optional.
    match_kinds:
      - comment
      - identifier
    # Optional violation message.
    message: "Pirates are better than ninjas."
    # Optional violation severity.
    severity: error
  no_hiding_in_strings:
    regex: "([nN]inja)"
    # Syntax kinds to match. optional.
    match_kinds: string
```

--------------------------------

### Publish CocoaPods manually

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Execute this command to manually publish the project to CocoaPods if the automated release workflow fails.

```bash
make pod_publish
```

--------------------------------

### Add Xcode Package Dependency

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use this URL to add SwiftLint as a package dependency within Xcode.

```bash
https://github.com/SimplyDanny/SwiftLintPlugins
```

--------------------------------

### Disable and enable specific rules in code

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use swiftlint:disable and swiftlint:enable comments to toggle specific rules for a block of code.

```swift
// swiftlint:disable colon
let noWarning :String = "" // No warning about colons immediately after variable names.
// swiftlint:enable colon
let hasWarning :String = "" // Warning generated about colons immediately after variable names.
```

--------------------------------

### Define rule configuration

Source: https://github.com/realm/swiftlint/blob/main/CONTRIBUTING.md

Set the configuration property of a rule using a specific configuration type, such as SeverityConfiguration.

```swift
var configuration = SeverityConfiguration<Self>(.warning)
```

--------------------------------

### Configure Xcode CI for Unattended Plugin Use

Source: https://github.com/realm/swiftlint/blob/main/README.md

Bypass Xcode validation dialogs for plugins and macros during CI builds using xcodebuild flags or defaults settings.

```bash
-skipPackagePluginValidation
-skipMacroValidation
```

```bash
defaults write com.apple.dt.Xcode IDESkipPackagePluginFingerprintValidatation -bool YES
defaults write com.apple.dt.Xcode IDESkipMacroFingerprintValidation -bool YES
```

--------------------------------

### Add SwiftLint to Package.swift

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use these declarations to include SwiftLint as a dependency in your Swift Package Manager project.

```swift
.package(url: "https://github.com/SimplyDanny/SwiftLintPlugins", from: "<version>")
```

```swift
.package(url: "https://github.com/SimplyDanny/SwiftLintPlugins", exact: "<version>")
```

--------------------------------

### Include Custom Rules in only_rules

Source: https://github.com/realm/swiftlint/blob/main/README.md

Ensure custom rules are processed when using the only_rules configuration option.

```yaml
only_rules:
  - custom_rules

custom_rules:
  no_hiding_in_strings:
    regex: "([nN]inja)"
    match_kinds: string
```

--------------------------------

### Path Merging Logic

Source: https://github.com/realm/swiftlint/blob/main/README.md

The mathematical logic used to resolve included and excluded paths when merging configurations.

```text
merged.included = (parent.included - child.excluded) + child.included
merged.excluded = (parent.excluded - child.included) + child.excluded
```

--------------------------------

### Disable all rules in code

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use the all keyword to suppress all SwiftLint warnings within a specific block.

```swift
// swiftlint:disable all
let noWarning :String = "" // No warning about colons immediately after variable names.
let i = "" // Also no warning about short identifier names.
// swiftlint:enable all
let hasWarning :String = "" // Warning generated about colons immediately after variable names.
let y = "" // Warning generated about short identifier names.
```

--------------------------------

### Override Swift Toolchain

Source: https://github.com/realm/swiftlint/blob/main/README.md

Use the TOOLCHAINS environment variable to specify a particular Swift toolchain version for SwiftLint execution.

```shell
TOOLCHAINS=com.apple.dt.toolchain.Swift_2_3 swiftlint --fix
```

--------------------------------

### Add SwiftLint Plugin to Swift Package Target

Source: https://github.com/realm/swiftlint/blob/main/README.md

Include the SwiftLintBuildToolPlugin in the plugins array of your target definition within Package.swift.

```swift
.target(
    ...
    plugins: [.plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLintPlugins")]
),
```

--------------------------------

### Apply rule modifiers to specific lines

Source: https://github.com/realm/swiftlint/blob/main/README.md

Append :previous, :this, or :next to disable or enable commands to restrict the scope to specific lines.

```swift
// swiftlint:disable:next force_cast
let noWarning = NSNumber() as! Int
let hasWarning = NSNumber() as! Int
let noWarning2 = NSNumber() as! Int // swiftlint:disable:this force_cast
let noWarning3 = NSNumber() as! Int
// swiftlint:disable:previous force_cast
```

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