package main
import (
"fmt"
"github.com/xiexiao/gopark"
"strings"
)
var (
fn = gopark.NewFlatMapperFunc("fn", func(x interface{}) []interface{} {
vals := strings.Fields(x.(string))
results := make([]interface{}, len(vals))
for idx, v := range vals {
results[idx] = v
}
return results
})
fnMap = gopark.NewMapperFunc("fnMap", func(x interface{}) interface{} {
return &gopark.KeyValue{x, 1}
})
fnReduce = gopark.NewReducerFunc("fnReduce", func(x, y interface{}) interface{} {
return x.(int) + y.(int)
})
)
func init() {
gopark.RegisterFunc(fn)
gopark.RegisterFunc(fnMap)
gopark.RegisterFunc(fnReduce)
}
fmt.Println("Pi =", (4.0 * count.Value().(float64) / float64(N)))
}
func main() {
testTextFile()
}
var flatmap_func = gopark.NewFlatMapperFunc("flatmap_func",
func(line interface{}) []interface{} {
vs := strings.Fields(line.(string))
set := make(map[string]bool)
for _, v := range vs {
if _, ok := set[v]; !ok {
set[v] = true
}
}
words := make([]interface{}, len(set))
idx := 0
for k, _ := range set {
words[idx] = k
idx += 1
}
return words
})
var reducer_func = gopark.NewReducerFunc("reducer_func",
func(x, y interface{}) interface{} {
return x.(int) + y.(int)
})
func init() {
gopark.RegisterFunc(random_once)