Golang File Categories

Package Main

Import (

"FMT"

)

Func files (fs []string) <-chan string{

c: = Make (Chan string, 1000)//with 1000 buffered channel,1000 without blocking

Go func () {

For _, F: = Range fs{

C <-F

}

Close (c)//Slice All files are sent, closed

}()

Return C

}

Func filtersize (in <-chan string) <-chan string{

c: = Make (Chan string, 1000)//with 1000 buffered channel,1000 without blocking

Go func () {

For I: = Range in{

Fmt. Println ("Filter size got:", i)

if i = = "123.txt" | | i = = "456.txt" {

C <-I

}

}

Close (c)

}()

Return C

}

Func Main () {

Fmt. Println ("File filter Service")

FS: = []string{"123.txt", "456.txt", "789.txt", "1222.txt"}

c: = filtersize (Files (FS))

For I: = Range c{//block main gorouting, loop through the data in the channel until the channel is closed

Fmt. Println ("Main got:", i)

}

}

Output:

File Filter Service

Filter size Func got:123.txt

Filter size Func got:456.txt

Filter size Func got:789.txt

Filter size Func got:1222.txt

Main Got:123.txt

Main Got:456.txt