respect tag name for structs in a slice

[sattellite]

I caught trouble when some fields in my structs have names that contains more then one uppercase letter. I fixed this trouble.

type A struct {
  B struct {
    C []struct{
      ID       int    // previous m2s searches for an "Id"
      UserName string // previous m2s searches for an "Username"
    }
  }
}

Now the tag name is respected into account in the structures inside the slice.

[cristaloleg]

Hm, interesting

[sattellite]

At first, I couldn't figure out what the problem was when my config was loading. I thought the problem was in the parent library for parsing toml itself. But after studying the code, I came to the conclusion that the problem lies in aconfig itself. For some reason, the m2s method uses the strings.Title(deprecated) to search for fields only in the format when the first letter is uppercase. And field names that are idiomatic for Go are ignored, such as ID (not Id). Field tags are also ignored, which makes it useless to specify them for structures in slices. I was added processing of tags to correctly select the field of structure for filling. But since at the time of filling it is unknown which decoder the data came from, I use a loop of connected decoders.

[sattellite]

@cristaloleg hi, can you do a review for my pull request, please? I am ready to answer any questions you may have about the code.