package main import ( "strings" "github.com/dghubble/go-twitter/twitter" ) func analyzeSource(tweets []twitter.Tweet) map[string]int { var sources = make(map[string]int) for _, v := range tweets { source := strings.Split(strings.Split(v.Source, ">")[1], "<")[0] if _, ok := sources[source]; ok { sources[source] = sources[source] + 1 } else { sources[source] = 1 } } return (sources) }