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Exceptions indicated.
Exceptions indicated.
merr.core
errclj/s
(err)(err {:keys [type message data cause] :or {type default-error-type} :as m})Returns value as MerrError.
NOTE Default error type is :error
=> (:type (err {:message "hello"}))
:error
=> (:type (err {:type :custom-error :message "hello"}))
:custom-error
=> (:data (err {:data {:foo "bar"}}))
{:foo "bar"}
Returns value as `MerrError`.
**NOTE** Default error type is `:error`
```
=> (:type (err {:message "hello"}))
:error
=> (:type (err {:type :custom-error :message "hello"}))
:custom-error
=> (:data (err {:data {:foo "bar"}}))
{:foo "bar"}
```err?clj/s
(err? x)Returns true if x is MerrError.
=> (err? "foo")
false
=> (err? (err {:message "foo"}))
true
Returns `true` if x is `MerrError`.
```
=> (err? "foo")
false
=> (err? (err {:message "foo"}))
true
```letclj/smacro
(let err-sym bindings & body)binding => binding-form init-expr
If init-expr is not MerrError, binding-form bound to the value,
if not, err-sym bound to the MerrError value and rest bindings are skipped.
=> (let +err+ [a 1
=> b (inc a)]
=> [a b (err? +err+)])
[1 2 false]
=> (let +err+ [a (err {:message "ERR"})
=> b (inc a)]
=> [a b (err? +err+)])
[nil nil true]
binding => binding-form init-expr
If init-expr is not `MerrError`, binding-form bound to the value,
if not, `err-sym` bound to the `MerrError` value and rest bindings are skipped.
```
=> (let +err+ [a 1
=> b (inc a)]
=> [a b (err? +err+)])
[1 2 false]
=> (let +err+ [a (err {:message "ERR"})
=> b (inc a)]
=> [a b (err? +err+)])
[nil nil true]
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