HBS-0: input pine optimization to nyc copy

links/24h_volume.pine.link

@@ -1,14 +1,23 @@
 // 24h volume
-price = close
 currency = "USD"
 msIn24h = 24*60*60*1000
 countOfFiveMinsInDay = 24*60/5
 maxBufferSize = 2*countOfFiveMinsInDay
 cumVolTF = "5"
-cum24hVol(s) =>
-	src = s
-	if bar_index==0
-		src := src[maxBufferSize] * time[maxBufferSize] * 0
+expr(offset, maxBufferSize) =>
+	if (syminfo.volumetype == "quote")
+		max_bars_back(volume, maxBufferSize)
+		volume[offset]
+	else
+		if syminfo.volumetype == "base"
+			max_bars_back(close, maxBufferSize)
+			max_bars_back(volume, maxBufferSize)
+			close[offset] * volume[offset]
+		else
+			na
+
+cum24hVol() =>
+	max_bars_back(time, maxBufferSize)
 	var cumSum = 0.
 	var int firstBarTimeIndex = na
 	if na(firstBarTimeIndex) // 24 H have not elapsed yet
@@ -17,20 +26,20 @@ cum24hVol(s) =>
 			if (time - time[i]) >= msIn24h
 				firstBarTimeIndex := bar_index - i + 1
 				break
-			sum += src[i]
+			sum += expr(i, maxBufferSize)
 		cumSum := sum
 	else
-		cumSum += nz(src)
+		cumSum += nz(expr(0, maxBufferSize))
 		for i = firstBarTimeIndex to bar_index
 			if (time - time[bar_index - i]) < msIn24h
 				firstBarTimeIndex := i
 				break
-			cumSum -= nz(src[bar_index - i])
+			cumSum -= nz(expr(bar_index - i, maxBufferSize))
 			if cumSum <= 0
 				cumSum := 0
 	cumSum
-expr = syminfo.volumetype == "quote" ? volume : ( syminfo.volumetype == "base" ? price*volume : na )
-vol24h = request.security(syminfo.tickerid, cumVolTF, cum24hVol(expr), lookahead = barmerge.lookahead_off, currency = currency, ignore_invalid_symbol=true)
+
+vol24h = request.security(syminfo.tickerid, cumVolTF, cum24hVol(), lookahead = barmerge.lookahead_off, currency = currency, ignore_invalid_symbol=true)
 plot(vol24h, title = "24h_vol", style = plot.style_columns)
 
 // volume in base and quote currencies
@@ -42,8 +51,8 @@ plot(volQuote, title = "volume_quote", style = plot.style_columns)
 // 24h prev value (generic)
 prev24hVal(source) =>
 	src = source
-	if bar_index == 0
-		src := src[maxBufferSize] * time[maxBufferSize] * 0
+	max_bars_back(src, maxBufferSize)
+	max_bars_back(time, maxBufferSize)
 	int BB24h = na
 	for i = 0 to countOfFiveMinsInDay
 		if (time - time[i]) >= msIn24h