same

ch1/1_1.go

@@ -1,12 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strings"
-)
-
-func main() {
-	fmt.Printf("command: %s\n", os.Args[0])
-	fmt.Printf("args: %s\n", strings.Join(os.Args[1:], " "))
-}

ch1/1_2.go

@@ -1,19 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strings"
-)
-
-func main() {
-	fmt.Printf("command: %s\n", os.Args[0])
-	fmt.Printf("args: %s\n", strings.Join(os.Args[1:], " "))
-	str := ""
-	deli := " "
-	for i, j := range os.Args[1:] {
-		str += fmt.Sprintf("index: %d value: %s", i, j)
-		str += deli
-	}
-	fmt.Println(str)
-}

ch1/1_3.go

@@ -1,33 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strings"
-	"time"
-)
-
-func usingJoin() {
-	fmt.Println(strings.Join(os.Args[1:], " "))
-}
-
-func forLoop() {
-	s, sep := "", " "
-	for _, i := range os.Args[1:] {
-		s += i
-		s += sep
-	}
-	fmt.Println(s)
-}
-
-func main() {
-	start := time.Now()
-	forLoop()
-	t1 := time.Since(start)
-	fmt.Println("for loop: ", t1)
-	start = time.Now()
-	usingJoin()
-	t2 := time.Since(start)
-	fmt.Println("using join: ", t2)
-	fmt.Println("Δ", t1-t2)
-}

ch1/1_4.go

@@ -1,51 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"log"
-	"os"
-	"strings"
-)
-
-func main() {
-	counts := make(map[string][]string)
-	file := os.Args[1:]
-	if len(file) == 0 {
-		countLines(os.Stdin, counts)
-	} else {
-		for _, i := range file {
-			f, err := os.Open(i)
-			if err != nil {
-				log.Print(err)
-			}
-			countLines(f, counts)
-			f.Close()
-		}
-	}
-	for lines, n := range counts {
-		if len(n) > 1 {
-			fmt.Printf("%v\t\"%s\"\n", n, strings.Trim(lines, " "))
-		}
-	}
-}
-
-func contains(slice []string, file string) bool {
-	for _, i := range slice {
-		if i == file {
-			return true
-		}
-	}
-	return false
-}
-
-func countLines(f *os.File, counts map[string][]string) {
-	input := bufio.NewScanner(f)
-	for input.Scan() {
-		cur := counts[input.Text()]
-		if !contains(cur, f.Name()) {
-			cur = append(cur, f.Name())
-			counts[input.Text()] = cur
-		}
-	}
-}

ch1/dup2.go

@@ -1,37 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"log"
-	"os"
-)
-
-func main() {
-	counts := make(map[string]int)
-	file := os.Args[1:]
-	if len(file) == 0 {
-		countLines(os.Stdin, counts)
-	} else {
-		for _, i := range file {
-			f, err := os.Open(i)
-			if err != nil {
-				log.Print(err)
-			}
-			countLines(f, counts)
-			f.Close()
-		}
-	}
-	for lines, n := range counts {
-		if n > 1 {
-			fmt.Printf("%d\t%s\n", n, lines)
-		}
-	}
-}
-
-func countLines(f *os.File, counts map[string]int) {
-	input := bufio.NewScanner(f)
-	for input.Scan() {
-		counts[input.Text()]++
-	}
-}

ch1/echo.go

@@ -1,11 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strings"
-)
-
-func main() {
-	fmt.Println(strings.Join(os.Args[1:], " "))
-}