add expanded net, mem widgets

widgets/hist.go

@@ -1,21 +1,45 @@
 package widgets
 
 type HistData struct {
-	data    []int
-	labels  []string
-	maxSize int
+	maxLen int
+	labels []string
 }
 
 func NewHistData(max int) HistData {
 	return HistData{
-		data:    make([]int, max),
-		labels:  make([]string, max),
-		maxSize: max,
+		maxLen: max,
+		labels: make([]string, max),
 	}
 }
 
-func (h HistData) Append(val int) {
-	if len(h.data) >= h.maxSize {
+type IntHistData struct {
+	HistData
+	data []int
+}
+
+func NewIntHistData(max int) IntHistData {
+	return IntHistData{NewHistData(max), make([]int, max)}
+}
+
+func (h IntHistData) Append(val int) {
+	if len(h.data) >= h.maxLen {
+		h.data = append(h.data[:0], h.data[1:]...)
+	}
+
+	h.data = append(h.data, val)
+}
+
+type FloatHistData struct {
+	HistData
+	data []float64
+}
+
+func NewFloatHistData(max int) FloatHistData {
+	return FloatHistData{NewHistData(max), make([]float64, max)}
+}
+
+func (h FloatHistData) Append(val float64) {
+	if len(h.data) >= h.maxLen {
 		h.data = append(h.data[:0], h.data[1:]...)
 	}
 	h.data = append(h.data, val)