Created IsWritable function and also changed name of CanRead() to IsReadable()

ringbuffer/RingBuffer.go

@@ -81,7 +81,7 @@ a call to Get without an accompanying call to DoneWriting.
 func (rb *ringBuffer) Get() ([]byte, error) {
 	rb.mutex.Lock()
 	defer rb.mutex.Unlock()
-	if rb.noOfElements == rb.size {
+	if !rb.IsWritable() {
 		return nil, errors.New("Buffer full!")
 	}
 	if rb.currentlyWriting {
@@ -129,7 +129,7 @@ second call to Read before a call to DoneReading.
 func (rb *ringBuffer) Read() ([]byte, error) {
 	rb.mutex.Lock()
 	defer rb.mutex.Unlock()
-	if !rb.CanRead() {
+	if !rb.IsReadable() {
 		return nil, errors.New("Buffer is empty, nothging to read!")
 	}
 	if rb.currentlyReading {
@@ -160,12 +160,23 @@ func (rb *ringBuffer) DoneReading() error {
 }
 
 /*
-CanRead returns true if it is possible to read from the buffer, i.e. if
+IsReadable returns true if it is possible to read from the buffer, i.e. if
 it is not empty.
 */
-func (rb *ringBuffer) CanRead() bool {
+func (rb *ringBuffer) IsReadable() bool {
 	if rb.first == -1 || rb.noOfElements == 0 {
 		return false
 	}
 	return true
 }
+
+/*
+IsWritable returns true if it is possible to write to the buffer, i.e. if
+it is not full.
+*/
+func (rb *ringBuffer) IsWritable() bool {
+	if rb.noOfElements == rb.size {
+		return false
+	}
+	return true
+}