improve standard of the document

Signed-off-by: chentanjun <[email protected]>

pkg/errortypes/errortypes.go

@@ -90,37 +90,37 @@ func (s DfError) Error() string {
 	return fmt.Sprintf("{\"Code\":%d,\"Msg\":\"%s\"}", s.Code, s.Msg)
 }
 
-// IsNilError check the error is nil or not.
+// IsNilError checks the error is nil or not.
 func IsNilError(err error) bool {
 	return err == nil
 }
 
-// IsDataNotFound check the error is the data cannot be found.
+// IsDataNotFound checks the error is the data cannot be found.
 func IsDataNotFound(err error) bool {
 	return checkError(err, codeDataNotFound)
 }
 
-// IsEmptyValue check the error is the value is empty or nil.
+// IsEmptyValue checks the error is the value is empty or nil.
 func IsEmptyValue(err error) bool {
 	return checkError(err, codeEmptyValue)
 }
 
-// IsInvalidValue check the error is the value is invalid or not.
+// IsInvalidValue checks the error is the value is invalid or not.
 func IsInvalidValue(err error) bool {
 	return checkError(err, codeInvalidValue)
 }
 
-// IsNotInitialized check the error is the object is not initialized or not.
+// IsNotInitialized checks the error is the object is not initialized or not.
 func IsNotInitialized(err error) bool {
 	return checkError(err, codeNotInitialized)
 }
 
-// IsConvertFailed check the error is a conversion error or not.
+// IsConvertFailed checks the error is a conversion error or not.
 func IsConvertFailed(err error) bool {
 	return checkError(err, codeConvertFailed)
 }
 
-// IsRangeNotSatisfiable check the error is a
+// IsRangeNotSatisfiable checks the error is a
 // range not exist error or not.
 func IsRangeNotSatisfiable(err error) bool {
 	return checkError(err, codeRangeNotSatisfiable)

pkg/errortypes/supernode_errors.go

@@ -47,47 +47,47 @@ var (
 	ErrAuthenticationRequired = DfError{codeAuthenticationRequired, "authentication required"}
 )
 
-// IsSystemError check the error is a system error or not.
+// IsSystemError checks the error is a system error or not.
 func IsSystemError(err error) bool {
 	return checkError(err, codeSystemError)
 }
 
-// IsCDNFail check the error is CDNFail or not.
+// IsCDNFail checks the error is CDNFail or not.
 func IsCDNFail(err error) bool {
 	return checkError(err, codeCDNFail)
 }
 
-// IsCDNWait check the error is CDNWait or not.
+// IsCDNWait checks the error is CDNWait or not.
 func IsCDNWait(err error) bool {
 	return checkError(err, codeCDNWait)
 }
 
-// IsPeerWait check the error is PeerWait or not.
+// IsPeerWait checks the error is PeerWait or not.
 func IsPeerWait(err error) bool {
 	return checkError(err, codePeerWait)
 }
 
-// IsUnknowError check the error is UnknowError or not.
+// IsUnknowError checks the error is UnknowError or not.
 func IsUnknowError(err error) bool {
 	return checkError(err, codeUnknowError)
 }
 
-// IsPeerContinue check the error is PeerContinue or not.
+// IsPeerContinue checks the error is PeerContinue or not.
 func IsPeerContinue(err error) bool {
 	return checkError(err, codePeerContinue)
 }
 
-// IsURLNotReachable check the error is a url not reachable or not.
+// IsURLNotReachable checks the error is a url not reachable or not.
 func IsURLNotReachable(err error) bool {
 	return checkError(err, codeURLNotReachable)
 }
 
-// IsTaskIDDuplicate check the error is a TaskIDDuplicate error or not.
+// IsTaskIDDuplicate checks the error is a TaskIDDuplicate error or not.
 func IsTaskIDDuplicate(err error) bool {
 	return checkError(err, codeTaskIDDuplicate)
 }
 
-// IsAuthenticationRequired check the error is an AuthenticationRequired error or not.
+// IsAuthenticationRequired checks the error is an AuthenticationRequired error or not.
 func IsAuthenticationRequired(err error) bool {
 	return checkError(err, codeAuthenticationRequired)
 }

pkg/printer/printer.go

@@ -29,7 +29,7 @@ var (
 	Printer = &StdPrinter{Out: os.Stdout}
 )
 
-// StdPrinter output info to console directly.
+// StdPrinter outputs info to console directly.
 type StdPrinter struct {
 	Out io.Writer
 }

pkg/syncmap/syncmap.go

@@ -39,7 +39,7 @@ func NewSyncMap() *SyncMap {
 	return &SyncMap{&sync.Map{}}
 }
 
-// Add add a key-value pair into the *sync.Map.
+// Add adds a key-value pair into the *sync.Map.
 // The ErrEmptyValue error will be returned if the key is empty.
 func (mmap *SyncMap) Add(key string, value interface{}) error {
 	if stringutils.IsEmptyStr(key) {