refactor: log parser parseLine to parseFields

27-functional-programming/log-parser-exp/result.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"strings"
 )
 
 // result stores the parsed result for a domain
@@ -13,9 +12,8 @@ type result struct {
 	uniques int
 }
 
-// parseLine parses a log line and returns the parsed result with an error
-func parseLine(line string) (r result, err error) {
-	fields := strings.Fields(line)
+// parseFields parses and returns the parsing result
+func parseFields(fields []string) (r result, err error) {
 	if len(fields) != 4 {
 		return r, fmt.Errorf("wrong number of fields -> %v", fields)
 	}

27-functional-programming/log-parser-exp/textreader.go

@@ -11,6 +11,7 @@ import (
 	"bufio"
 	"fmt"
 	"io"
+	"strings"
 )
 
 func textReader(r io.Reader) ([]result, error) {
@@ -27,7 +28,7 @@ func parseText(in *bufio.Scanner) ([]result, error) {
 	for in.Scan() {
 		lines++
 
-		result, err := parseLine(in.Text())
+		result, err := parseFields(strings.Fields(in.Text()))
 		if err != nil {
 			// TODO: custom error type for line information
 			return nil, fmt.Errorf("line %d: %v", lines, err)