Performance counter stats for './target/release/fl':

       3570,953007      task-clock (msec)         #    1,000 CPUs utilized
                10      context-switches          #    0,003 K/sec
                 0      cpu-migrations            #    0,000 K/sec
               113      page-faults               #    0,032 K/sec
        7122554792      cycles                    #    1,995 GHz
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
       14789974128      instructions              #    2,08  insns per cycle
        3270834989      branches                  #  915,956 M/sec
          98659373      branch-misses             #    3,02% of all branches

       3,571524133 seconds time elapsed


Performance counter stats for './main':

       2666,074874      task-clock (msec)         #    1,001 CPUs utilized
               342      context-switches          #    0,128 K/sec
                 8      cpu-migrations            #    0,003 K/sec
               137      page-faults               #    0,051 K/sec
        5311949003      cycles                    #    1,992 GHz
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
       10034346466      instructions              #    1,89  insns per cycle
        2073760220      branches                  #  777,833 M/sec
          52485608      branch-misses             #    2,53% of all branches

       2,663269590 seconds time elapsed




use std::io;
use std::io::BufReader;
use std::io::BufRead;
use std::fs::File;

fn main() {
    let f = File::open("www.js").unwrap();
    let mut file = BufReader::new(&f);
    let mut buffer = String::new();
    let mut count = 0;

    while file.read_line(&mut buffer).unwrap() != 0 {
        if buffer.contains("array") {
            count += 1;
        }
        buffer.clear();
    }
    println!("{}", count);
}




package main

import (
	"bufio"
	"bytes"
	"fmt"
	"io"
	"log"
	"os"
)

func main() {

	f, err := os.Open("www.js")
	count := 0
	bf := bufio.NewReader(f)

	arr := []byte("array")
	for {
		line, _, err := bf.ReadLine()

		if err == io.EOF {
			break
		}

		if bytes.Contains(line, arr) {
			count++
		}

	}
	fmt.Println(count)
}