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A lightweight package for loading OS environment variables into structs for Go projects

env 최신버젼 다운로드

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# Env

GoLobby Env is a lightweight package for loading OS environment variables into structs for Go projects.

## Documentation
### Supported Versions
It requires Go `v1.16` or newer versions.

### Installation
To install this package run the following command in the root of your project
```bash
go get github.com/golobby/env/v2
```

### Usage Example
The following example demonstrates how to use GoLobby Env package.

```go
type Config struct {
    Debug bool      `env:"DEBUG"` // Possible Values: "true", "false", "1", "0"
    App struct {
        Name string `env:"APP_NAME"`
        Port int16  `env:"APP_PORT"`
    }
    Database struct {
        Name string `env:"DB_NAME"`
        Port int16  `env:"DB_PORT"`
        User string `env:"DB_USER"`
        Pass string `env:"DB_PASS"`
    }
    IPs []string `env:IPS` // Possible Value: "192.168.0.1, 192.168.0.2"
    IDs []int32  `env:IDS` // Possible Value: "10, 11, 12"
}

config := Config{}
err := env.Feed(&config)

// Use `config` struct in your app!
```

### Usage Tips
* The `Feed()` function gets a pointer of a struct.
* It ignores empty OS environment variables.
* It supports nested structs and struct pointers.

### Field Types
GoLobby Env uses the [GoLobby Cast](https://github.com/golobby/cast) package to cast OS environment variables to related struct field types.
Here you can see the supported types:

https://github.com/golobby/cast#supported-types

## See Also
* [GoLobby/Config](https://github.com/golobby/config): A lightweight yet powerful configuration management for Go projects
* [GoLobby/DotEnv](https://github.com/golobby/dotenv): A lightweight package for loading dot env (.env) files into structs for Go projects

## License
GoLobby Env is released under the [MIT License](http://opensource.org/licenses/mit-license.php).

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