| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Data.Env.ExtractFields
Description
This module provides a type class ExtractFields that extracts field names
from a record type. It also provides functions to retrieve environment
variables based on these field names, with options for different naming
conventions.
Synopsis
- class ExtractFields a
- extractFields :: forall a. ExtractFields a => [String]
- getEnvRaw :: forall a m. (MonadIO m, ExtractFields a) => (String -> String) -> m (Map String String)
- getEnvRawLowerToUpperSnake :: forall a m. (MonadIO m, ExtractFields a) => m (Map String String)
- getEnvRawCamelCaseToUpperSnake :: forall a m. (MonadIO m, ExtractFields a) => m (Map String String)
Documentation
class ExtractFields a Source #
Type class for extracting field names from a record type.
Minimal complete definition
extractFields'
Instances
| (Generic a, GExtractFields (Rep a)) => ExtractFields (a :: Type) Source # | |
Defined in Data.Env.ExtractFields Methods extractFields' :: Proxy a -> [String] | |
extractFields :: forall a. ExtractFields a => [String] Source #
Extract field names from a record type.
getEnvRaw :: forall a m. (MonadIO m, ExtractFields a) => (String -> String) -> m (Map String String) Source #
Retrieve environment variables based on field names, applying a mapping function to the field names.
getEnvRawLowerToUpperSnake :: forall a m. (MonadIO m, ExtractFields a) => m (Map String String) Source #
Retrieve environment variables based on field names, converting them to upper case.
getEnvRawCamelCaseToUpperSnake :: forall a m. (MonadIO m, ExtractFields a) => m (Map String String) Source #
Retrieve environment variables based on field names, converting them from camel case (record field naming) to upper snake case (environment variable naming).