lo/docs/data/core-waitfor.md

name, slug, sourceRef, category, subCategory, playUrl, variantHelpers, similarHelpers, position, signatures

name	slug	sourceRef	category	subCategory	playUrl	variantHelpers	similarHelpers	position	signatures
WaitFor	waitfor	concurrency.go#L112	core	concurrency	https://go.dev/play/p/t_wTDmubbK3	core#concurrency#waitfor core#concurrency#waitforwithcontext	core#retry#attemptwithdelay core#retry#attemptwhilewithdelay core#time#durationx	20	func WaitFor(condition func(i int) bool, timeout time.Duration, heartbeatDelay time.Duration) (totalIterations int, elapsed time.Duration, conditionFound bool) func WaitForWithContext(ctx context.Context, condition func(ctx context.Context, i int) bool, timeout time.Duration, heartbeatDelay time.Duration) (totalIterations int, elapsed time.Duration, conditionFound bool)

Runs periodically until a condition is validated. Use WaitFor for simple predicates, or WaitForWithContext when you need context cancellation/timeout inside the predicate. Both return total iterations, elapsed time, and whether the condition became true.

iterations, elapsed, ok := lo.WaitFor(
    func(i int) bool {
        return i > 5
    },
    10*time.Millisecond,
    time.Millisecond,
)

With context:

iterations, elapsed, ok := lo.WaitForWithContext(
    context.Background(),
    func(_ context.Context, i int) bool {
        return i >= 5
    },
    10*time.Millisecond,
    time.Millisecond,
)