lo/docs/data/core-attempt.md

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

name	slug	sourceRef	category	subCategory	playUrl	variantHelpers	similarHelpers	position	signatures
Attempt	attempt	retry.go#L153	core	retry	https://go.dev/play/p/3ggJZ2ZKcMj	core#retry#attempt	core#retry#attemptwithdelay core#retry#attemptwhile core#retry#attemptwhilewithdelay	0	func Attempt(maxIteration int, f func(index int) error) (int, error)

Invokes a function up to N times until it returns nil. Returns the number of iterations attempted (1-based) and the last error. Useful for retrying operations that might fail temporarily.

// Success after 3 attempts
iter, err := lo.Attempt(5, func(i int) error {
    if i == 2 {
        return nil // succeeds on 3rd attempt (index 2)
    }
    return errors.New("failed")
})
// iter: 3, err: nil

// All attempts fail - returns last error
iter, err = lo.Attempt(3, func(i int) error {
    return fmt.Errorf("attempt %d failed", i)
})
// iter: 3, err: "attempt 2 failed" (last error from index 2)

// Immediate success on first attempt
iter, err = lo.Attempt(5, func(i int) error {
    return nil // succeeds immediately
})
// iter: 1, err: nil

// Zero attempts - returns error without calling function
iter, err = lo.Attempt(0, func(i int) error {
    return errors.New("should not be called")
})
// iter: 0, err: "maxIteration must be greater than 0"