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Add throw (as in #8) #10

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Merged
paf31 merged 1 commit into from
Dec 11, 2015
Merged

Add throw (as in #8) #10

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11 changes: 10 additions & 1 deletion docs/Control/Monad/Eff/Exception.md
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Expand Up @@ -21,7 +21,7 @@ The type of Javascript errors

##### Instances
``` purescript
instance showError :: Show Error
Show Error
```

#### `error`
Expand Down Expand Up @@ -74,4 +74,13 @@ main = catchException print do
trace "Exceptions thrown in this block will be logged to the console"
```

#### `throw`

``` purescript
throw :: forall eff a. String -> Eff (err :: EXCEPTION | eff) a
```

A shortcut allowing you to throw an error in one step. Defined as
`throwException <<< error`.


6 changes: 6 additions & 0 deletions src/Control/Monad/Eff/Exception.purs
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Expand Up @@ -8,6 +8,7 @@ module Control.Monad.Eff.Exception
, message
, throwException
, catchException
, throw
) where

import Prelude
Expand Down Expand Up @@ -53,3 +54,8 @@ foreign import throwException :: forall a eff. Error -> Eff (err :: EXCEPTION |
-- | trace "Exceptions thrown in this block will be logged to the console"
-- | ```
foreign import catchException :: forall a eff. (Error -> Eff eff a) -> Eff (err :: EXCEPTION | eff) a -> Eff eff a

-- | A shortcut allowing you to throw an error in one step. Defined as
-- | `throwException <<< error`.
throw :: forall eff a. String -> Eff (err :: EXCEPTION | eff) a
throw = throwException <<< error