29 lines
480 B
Go
29 lines
480 B
Go
package reactive
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import "context"
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func BlockingLoop[T any](gen func() (T, error)) Observable[T] {
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return &blockingLoop[T]{gen}
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}
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type blockingLoop[T any] struct {
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gen func() (T, error)
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}
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func (b *blockingLoop[T]) Observe(ctx context.Context) <-chan Notification[T] {
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ch := make(chan Notification[T])
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go func() {
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defer close(ch)
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for {
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v, err := b.gen()
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if err != nil {
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ch <- MakeError[T](err)
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} else {
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ch <- MakeNext[T](v)
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}
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}
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}()
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return ch
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}
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