Env prefixes doesn't work with array

[dongjiang1989]

ref:

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"os"

	"github.com/caarlos0/env/v10"
)

type Test struct {
	Str string `env:"TEST"`
}
type ComplexConfig struct {
	Foos  []Test `envPrefix:"FOO_"`
	Clean Test   `envPrefix:"BAR_"`
}

func main() {
	os.Setenv("FOO_TEST", "kek")
	os.Setenv("FOO_0_TEST", "kek0")
	os.Setenv("FOO_1_TEST", "kek1")
	os.Setenv("BAR_TEST", "lel")

	cfg := ComplexConfig{}
	err := env.Parse(&cfg)
	if err != nil {
		log.Fatal(err)
	}
	confBytes, _ := json.Marshal(cfg)
	fmt.Printf("%s", confBytes)
}

output:

{"Foos":null,"Clean":{"Str":"lel"}}

[akutuev]

@caarlos0 let me know if you'd like to make this change, happy to help

[caarlos0]

on the top of my head I can't think of a reason why not... if you wanna try pls go for it 🙏

[dongjiang1989]

@akutuev Will you add pr for this feat？ I can help

[akutuev]

@akutuev Will you add pr for this feat？ I can help

Hi, no worries, I'm planning to take a look very soon, thanks