Strings / Read file line by line / Essential Go
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package main
import (
"fmt"
"io/ioutil"
"log"
"strings"
)
// ReadFileAsLines reads a file and splits it into lines
func ReadFileAsLines(path string) ([]string, error) {
d, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
s := string(d)
lines := strings.Split(s, "\n")
return lines, nil
}
func main() {
path := "main.go"
lines, err := ReadFileAsLines(path)
if err != nil {
log.Fatalf("ReadFileAsLines() failed with '%s'\n", err)
}
fmt.Printf("There are %d lines in '%s'\n", len(lines), path)
}
Go
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