@@ -11,35 +11,35 @@ const { runNode, Promise: CreedPromise } = require('creed')
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// readFilePromise :: String -> String -> Promise Error Buffer
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const readFilePromise = ( fileName , encoding = 'utf-8' ) =>
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- runNode ( fs . readFile , fileName , { encoding} )
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+ runNode ( fs . readFile , fileName , { encoding} )
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// wrap into List that provides 'traverse'
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const files = List ( [ 'file1.txt' , 'file2.txt' ] )
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console . log (
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`Running...
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List(['file1.txt', 'file2.txt'])
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- .traverse( CreedPromise.of, readFilePromise )
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- .then( console.log, console.error ) :
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+ .traverse( CreedPromise.of, readFilePromise )
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+ .then( console.log, console.error ) :
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`
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)
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/*
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- 'files' is List of files 'List(a)'
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- 'map' preserves the List wrapper, so we can get 'List(Promise(a))'
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- 'traverse' applies the function (a -> f b) to each List entry,
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- then lifts the List to Promise of Lists via CreedPromise's 'ap' operator
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- running Promises in parallel!
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+ 'files' is List of files 'List(a)'
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+ 'map' preserves the List wrapper, so we can get 'List(Promise(a))'
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+ 'traverse' applies the function (a -> f b) to each List entry,
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+ then lifts the List to Promise of Lists via CreedPromise's 'ap' operator
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+ running Promises in parallel!
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*/
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files
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. traverse (
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- // type hint, applicative functor
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- // needed in case of failure or never running the function
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- CreedPromise . of ,
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+ // type hint, applicative functor
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+ // needed in case of failure or never running the function
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+ CreedPromise . of ,
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- // traversing function a -> f b
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- file => readFilePromise ( file )
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+ // traversing function a -> f b
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+ file => readFilePromise ( file )
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)
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. then ( console . log , console . error )
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