golangHow to read file line by line

package main

import (
  "bufio"
  "fmt"
	"os"
)

func main() {
  f, _ := os.Open("/var/www/examples/data.csv")
  defer f.Close()
  
  scn := bufio.NewScanner(f)
  for scn.Scan() {
    fmt.Println(scn.Text())
  }
}ctrl + cgithub

`package main` default package declaration	`"os"` include operating-system level library
`func main() {` declare `main` function that will be launched automatically	`os.Open` opens specified file handler
`/var/www/examples/data.csv` path to sample file with multiple lines	`defer f.Close()` deferred file handler close
`bufio.NewScanner` create new scanning buffer from our file handler	`scn.Scan()` iterate over scanning buffer
`scn.Text()` get buffer content on each iteration

Usage example

package main

import (
  "bufio"
  "fmt"
    "os"
)

func main() {
  f, _ := os.Open("/var/www/examples/data.csv")
  defer f.Close()

  scn := bufio.NewScanner(f)
  for scn.Scan() {
    fmt.Println(scn.Text())
  }
}

output

a,b
1,4
2,3
3,6

More of Golang

See more codes...

golangHow to read file line by line

Usage example

output

Related

More of Golang