Move internal bloom cmds to dht repo

This commit is contained in:
Matt Joiner 2018-05-25 18:36:59 +10:00
parent 93c24e862f
commit 7cafedac42
2 changed files with 0 additions and 49 deletions

View File

@ -1,16 +0,0 @@
package main
import (
"flag"
"fmt"
"github.com/willf/bloom"
)
func main() {
n := flag.Int("n", 0, "expected number of items")
falsePositiveRate := flag.Float64("fpr", 0, "false positive rate")
flag.Parse()
filter := bloom.NewWithEstimates(uint(*n), *falsePositiveRate)
fmt.Printf("m: %d, k: %d\n", filter.Cap(), filter.K())
}

View File

@ -1,33 +0,0 @@
package main
import (
"bufio"
"fmt"
"os"
"github.com/anacrolix/tagflag"
"github.com/willf/bloom"
)
func main() {
var args struct {
M uint `help:"num bits"`
K uint `help:"num hashing functions"`
}
tagflag.Parse(&args, tagflag.Description("adds lines from stdin to a bloom filter with the given configuration, and gives collision stats at EOF"))
filter := bloom.New(args.M, args.K)
scanner := bufio.NewScanner(os.Stdin)
n := 0
collisions := 0
for scanner.Scan() {
if filter.TestAndAdd(scanner.Bytes()) {
collisions++
}
n++
}
if err := scanner.Err(); err != nil {
fmt.Fprintf(os.Stderr, "error reading stdin: %s", err)
os.Exit(1)
}
fmt.Printf("collisions %d/%d (%f)\n", collisions, n, float64(collisions)/float64(n)*100)
}