The dWC.go utility revisited

In this section, we will change the implementation of the dWC.go utility developed in the previous chapter.

The first version of the program will use a buffered channel whereas the second version of the program will use shared memory for keeping the counts for each file you process.

Using a buffered channel

The name of this implementation will be WCbuffered.go and will be presented in five parts.

The first part of the utility is the following:

package main 
 
import ( 
   "bufio" 
   "fmt" 
   "io" 
   "os" 
   "path/filepath" 
   "regexp" 
) 
 
type File struct { 
   Filename   string 
   Lines      int 
   Words      int 
   Characters int 
   Error      error 
} 

The File structure will keep the counts for each input file. The second chunk of WCbuffered.go has the following Go code:

func monitor(values <-chan File, count int) { 
   var totalWords int = 0 
   var totalLines int = 0 
   var totalChars int = 0 
   for i := 0; i < count; i++ { 
         x := &lt...