@spec dictfilter(map() | keyword()) :: map()

Remove all keys from a map or keyword list whose value is nil.

@spec fxrange(number(), number() | nil, number(), boolean()) :: Enumerable.t()

Generate floating-point range (kombu.utils.functional.fxrange).

@spec fxrangemax(number(), number() | nil, number(), number()) :: Enumerable.t()

Generate floating-point range bounded by cumulative sum max (kombu.utils.functional.fxrangemax).

@spec maybe_list(term()) :: list() | nil

Wrap a scalar in a single-element list unless it is nil or already a list.

@spec maybe_s_to_ms(number() | nil) :: integer() | nil

Convert seconds to milliseconds (int(float(v) * 1000.0)), or nil if nil.

@spec retry_over_time((-> term()), module() | [module()], keyword()) :: term()

Retry fun when an exception in catch_list is raised (kombu.utils.functional.retry_over_time).

Options:

• :max_retries - maximum number of retries before re-raising (nil for unlimited)
• :interval_start - initial backoff in seconds (default 2)
• :interval_step - backoff increment in seconds (default 2)
• :interval_max - maximum sleep interval in seconds (default 30)
• :errback - fn exc, interval_list, retries -> sleep_seconds
• :callback - fn -> :ok called between retries and each 1s sleep tick
• :timeout - overall timeout in seconds (nil for none)
• :sleep_fn - custom sleep function fn seconds -> :ok (defaults to Process.sleep(trunc(s * 1000)))