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[](https://circleci.com/gh/peter-edge/env-go/tree/master)
[](http://goreportcard.com/report/peter-edge/env-go)
[](https://godoc.org/go.pedge.io/env)
[](https://github.com/peter-edge/env-go/blob/master/LICENSE)
Package env handles environment variables in a structured manner. It uses reflection
to set fields on a struct pointer passed to the main public method, `Populate`.
Example (from the test):
```go
type subEnv struct {
SubEnvRequiredString string `env:"SUB_ENV_REQUIRED_STRING,required"`
SubEnvOptionalString string `env:"SUB_ENV_OPTIONAL_STRING"`
SubEnvOptionalUint16Default uint16 `env:"SUB_ENV_OPTIONAL_UINT16_DEFAULT,default=1024"`
}
type testEnv struct {
RequiredString string `env:"REQUIRED_STRING,required"`
OptionalString string `env:"OPTIONAL_STRING"`
OptionalInt int `env:"OPTIONAL_INT"`
OptionalBool bool `env:"OPTIONAL_BOOL"`
SubEnv subEnv
Struct struct {
StructOptionalInt int `env:"STRUCT_OPTIONAL_INT"`
}
OptionalStringDefault string `env:"OPTIONAL_STRING_DEFAULT,default=foo"`
}
```
To populate this, one would call:
```go
testEnv := &testEnv{}
if err := env.Populate(testEnv); err != nil {
return err
}
```
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