https://github.com/alexito4/casepaths-extensions

Some simple CasePaths extensions
https://github.com/alexito4/casepaths-extensions

keypath package swift

Last synced: 1 day ago
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Some simple CasePaths extensions

• Host: GitHub
• URL: https://github.com/alexito4/casepaths-extensions
• Owner: alexito4
• License: mit
• Created: 2020-02-11T08:37:02.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-11-20T11:13:39.000Z (about 4 years ago)
• Last Synced: 2024-11-08T21:24:08.707Z (about 2 months ago)
• Topics: keypath, package, swift
• Language: Swift
• Size: 5.86 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# CasePaths-Extensions

Some simple [CasePaths](https://github.com/pointfreeco/swift-case-paths) extensions.

# matches

Useful to use in `if` conditions:

```swift

let state = Authentication.authenticated(accessToken: "123")

if (/Authentication.unauthenticated).matches(state) {

    print("unauthenticated")

} else {

    print("you're in!")

}

```

# map

As with `Optional.map` it transforms a value only if the enum is of the expected case.

```swift

let userIn = Authentication.authenticated(accessToken: "123")

let userOut = Authentication.unauthenticated

(/Authentication.authenticated).map(userIn, { $0.count }) // 3

((/Authentication.authenticated).map(userOut, { $0.count }) // nil

```

# mutate

Similar to `map` but instead of returning any new type, it returns a new enum with a transformed value, only if the enum case matches.

```swift

(/Authentication.authenticated).mutate(userIn, { ">>\($0)<<" })

// returns Authentication.authenticated(accessToken: ">>123<<")

```

# Author

Alejandro Martinez | http://alejandromp.com | [@alexito4](https://twitter.com/alexito4)