Peter,
with your responses I was able to figure out the cause of the error. I
created a function that calls defer.
I did it as a function as I put some trace code in along with the Close().
>From that I concluded you were correct.
I went ahead and reworked the rest of the code, which was my intent for
this particular exercise.
I have other questions, not related to this topic, so I won't talk about
that, subject for another topic,
and only after I have performed the necessary research. I do want to thank
you for your help, much appreciated ...
Following is the corrected, updated code ...
package main
import (
"flag"
"bufio"
"fmt"
"log"
"os"
)
func cli() string {
flag.Parse()
return flag.Arg(0)
}
func openFile(s string) *os.File {
file, err := os.Open(s)
if err != nil {
log.Fatal(err)
}
return file
}
func ClosingFile(file *os.File) {
file.Close()
}
func CreateScanner(file *os.File) *bufio.Scanner {
ireader := bufio.NewReader(file)
scanner := bufio.NewScanner(ireader)
return scanner
}
func CountLines(scanner *bufio.Scanner) int {
var count int
for scanner.Scan() {
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
count++
}
return count
}
func main() {
fname := cli()
f := openFile(fname)
defer ClosingFile(f)
s := CreateScanner(f)
lcounter := 0
lcounter = CountLines(s)
fmt.Printf("# lines read : %d\n", lcounter)
}
THANX(MKD).
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