找到包但找不到内容？

Question

I get a strange error while building my go project.

My structure:

-$GOPATH
 -src
   -main
     -main.go
   -configuration
     -configuration.go

configuration.go:

package configuration;

type Config int;

func (c Config) Parse(s string) map[string]string {...}

main.go

package main;

import"configuration"

func main() {
    var config Config;
    argMap := config.parse(...);    
    return;
}

if my working directory is $GOPATH, I do:

go build configuration - no output, OK
go build main
    imported and not used "configuration"
    undefined: Config

So my package is found ($GOPATH/pkg contains configuration.go with correct content - I can see the Parse method) and main imports it, but does not recognize its contents?

I recon the problem is that the type Config is not exported? Why would that be?

Answer 1

argMap := config.parse(...); wouldn't work, since you declared a Parse() method.
(as in "exported method configuration.Parse()")

var config configuration.Config
argMap := config.Parse(...); 

Config is exported, but the methods are case-sensitive (cf. Exported Identifiers).