code refactoring, backend code optimization

server/rx/extensions.go

@@ -2,47 +2,19 @@ package rx
 
 import "time"
 
-/*
-	Package rx contains:
-	-	Definitions for common reactive programming functions/patterns
-*/
-
-// ReactiveX inspired debounce function.
-//
-// Debounce emits a string from the source channel only after a particular
-// time span determined a Go Interval
-//
-// --A--B--CD--EFG-------|>
-//
-//	-t->                 |>
-//	       -t->          |>   t is a timer tick
-//	             -t->    |>
-//
-// --A-----C-----G-------|>
-func Debounce(interval time.Duration, source chan string, f func(emit string)) {
-	var item string
-	timer := time.NewTimer(interval)
-	for {
-		select {
-		case item = <-source:
-			timer.Reset(interval)
-		case <-timer.C:
-			if item != "" {
-				f(item)
-			}
-		}
-	}
-}
-
 // ReactiveX inspired sample function.
 //
 // Debounce emits the most recently emitted value from the source
 // withing the timespan set by the span time.Duration
-func Sample[T any](span time.Duration, source chan T, cb func(emit T)) {
-	timer := time.NewTimer(span)
+func Sample[T any](span time.Duration, source chan T, done chan struct{}, fn func(e T)) {
+	ticker := time.NewTicker(span)
 	for {
-		<-timer.C
-		cb(<-source)
-		timer.Reset(span)
+		select {
+		case <-ticker.C:
+			fn(<-source)
+		case <-done:
+			ticker.Stop()
+			return
+		}
 	}
 }