https://github.com/chiroptical/derive-has-field

https://github.com/chiroptical/derive-has-field

Last synced: 10 days ago
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• Host: GitHub
• URL: https://github.com/chiroptical/derive-has-field
• Owner: chiroptical
• License: mit
• Created: 2023-09-26T21:25:31.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2024-10-16T15:47:51.000Z (20 days ago)
• Last Synced: 2024-10-19T01:30:07.775Z (18 days ago)
• Language: Haskell
• Size: 20.5 KB
• Stars: 11
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Derive HasField instances

===

The [`OverloadedRecordDot`][overloaded-record-dot] syntax is surprisingly nice.

I really enjoy writing code with this extension and I was originally hesistant.

[Persistent][persistent] has a really nice feature where it will automatically remove

prefixes from models. Given a model like,

```

BankAccount

  accountNumber String

```

You would normally reference this field as `bankAccountAccountNumber`. However,

with overloaded record dot you can write `bankAccount.accountNumber` which is

much nicer.

At work, I really wanted this for **every** record. With this library, I can

write,

```haskell

{-# LANGUAGE DataKinds #-}

{-# LANGUAGE TemplateHaskell #-}

import DeriveHasField

data BankAccount =

  BankAccount

    { bankAccountAccountNumber :: String

    }

deriveHasFieldWith (dropPrefix "bankAccount") ''BankAccount

```

[overloaded-record-dot]: https://ghc.gitlab.haskell.org/ghc/doc/users_guide/exts/overloaded_record_dot.html

[persistent]: https://github.com/yesodweb/persistent