ALWAYS (unconditionally) executes given `run` form and: Default kind: `:error` Default level: `:error` Returns: - If given `run` form succeeds: returns the form's result. - If given `run` form throws ANYTHING: Calls `error!` with the thrown error and given signal options [2], then either returns given (:catch-val opts), or rethrows. Just a convenience util. For more flexibility use your own `try/catch`. See `taoensso.encore/try*` for easily catching cross-platform errors. Examples: (catch->error! (/ 1 0)) ; %> {:kind :error, :level :error, :error ...} (catch->error! ::my-id (/ 1 0)) ; %> {... :id ::my-id ...} (catch->error! {:let [x "x"] ; Available to `:data` and `:msg` :data {:x x} :msg ["My msg:" x] :catch-val "Return value iff form throws"} (/ 1 0)) ; %> {... :data {x "x"}, :msg_ "My msg: x" ...} Tips: - Test using `with-signal`: (with-signal (catch->error! ...)). - Supports the same options [2] as other signals [1]. - Useful for preventing errors from going unnoticed in futures, callbacks, agent actions, etc.!: (future (catch->error ::my-future (do-something))) See also `error!`. ---------------------------------------------------------------------- [1] See `help:signal-creators` - (`signal!`, `log!`, `event!`, ...) [2] See `help:signal-options` - {:keys [kind level id data ...]} [3] See `help:signal-content` - {:keys [kind level id data ...]} [4] See `help:signal-filters` - (by ns/kind/id/level, sampling, etc.)