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d2386d62f1
Objectives:
- Support single map opts arg in all cases.
- Make it easier for folks to inspect the source to understand how
the common creators use/wrap underlying `signal!`.
Also updated relevant docstrings, etc.
38 lines
1.4 KiB
Text
38 lines
1.4 KiB
Text
ALWAYS (unconditionally) executes given `run` form and:
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If `run` form succeeds: return the form's result.
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If `run` form throws:
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Call `error!` with the thrown error and the given signal options [2],
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then return (:catch-val opts) if it exists, or rethrow the error.
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Default kind: `:error`
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Default level: `:error`
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Examples:
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(catch->error! (/ 1 0)) ; %> {:kind :error, :level :error, :error <caught> ...}
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(catch->error! ::my-id (/ 1 0)) ; %> {... :id ::my-id ...}
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(catch->error!
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{:let [x "x"] ; Available to `:data` and `:msg`
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:data {:x x}
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:msg ["My msg:" x my-error]
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:catch-val "Return value when form throws"
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:catch-sym my-error ; Sym of caught error, available to `:data` and `:msg`
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}
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(/ 1 0)) ; %> {... :data {x "x"}, :msg_ "My msg: x <caught>" ...}
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Tips:
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- Test using `with-signal`: (with-signal (catch->error! ...)).
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- Supports the same options [2] as other signals [1].
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- Useful for preventing errors from going unnoticed in futures, callbacks,
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agent actions, etc.!: (future (catch->error ::my-future (do-something)))
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See also `error!`.
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----------------------------------------------------------------------
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[1] See `help:signal-creators` - (`signal!`, `log!`, `event!`, ...)
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[2] See `help:signal-options` - {:keys [kind level id data ...]}
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[3] See `help:signal-content` - {:keys [kind level id data ...]}
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[4] See `help:signal-filters` - (by ns/kind/id/level, sampling, etc.)
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