Golang : Read a file line by line
Got another newbie to Golang asking me for help today on how to read a file line by line. The simplest way that I can think of is to use the bufio.NewScanner() and scanner.Scan() functions. Below is a sample code for reading a text file line by line.
Content of file.dat
First
Second
Third
Fourth
Fifth
and the program will read the file
package main
import (
"bufio"
"fmt"
"os"
)
func main() {
file, err := os.Open("./file.dat")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer file.Close()
reader := bufio.NewReader(file)
scanner := bufio.NewScanner(reader)
for scanner.Scan() {
fmt.Println(scanner.Text())
}
}
and output the following
First
Second
Third
Fourth
Fifth
Reference :
See also : Golang : Scanf function weird error in Windows
By Adam Ng
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