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