Gr(      !"#$%&'NoneINConstruct an ordinary pipes ( from a ) of elements3runEffect $ fromStream (S.each [1..3]) >-> P.print123 Construct a ) of elements from a pipes ("S.print $ toStream $ P.each [1..3]123 FLink the chunks of a producer of bytestrings into a single byte stream 7Successively yield the chunks hidden in a byte stream.   splits a ( into two ( s; the outer (b is the longest consecutive group of elements that satisfy the predicate. Its inverse is    splits a ( into two ( s; the outer (_ is the longest consecutive group of elements that fail the predicate. Its inverse is  divides a ( into two (8s after a fixed number of elements. Its inverse is  splits a ( into two (s; the second producer begins where we meet an element that is different according to the equality predicate. Its inverse is Like #, where the equality predicate is (*) splits a ( into a ) of (%s of equal items. Its inverse is  groupsBy' splits a ( into a ) of (7s grouped using the given relation. Its inverse is This differs from h by comparing successive elements instead of comparing each element to the first member of the groupimport Pipes (yield, each)import Pipes.Prelude (toList)let rel c1 c2 = succ c1 == c2E(toList . intercalates (yield '|') . groupsBy' rel) (each "12233345") "12|23|3|345"E(toList . intercalates (yield '|') . groupsBy rel) (each "12233345")"122|3|3|34|5" splits a ( into a ) of ((s of a given length. Its inverse is .4let listN n = L.purely P.folds L.list . P.chunksOf nHrunEffect $ listN 3 P.stdinLn >-> P.take 2 >-> P.map unwords >-> P.print1<Enter>2<Enter>3<Enter>"1 2 3"4<Enter>5<Enter>6<Enter>"4 5 6"Blet stylish = P.concats . P.maps (<* P.yield "-*-") . P.chunksOf 2QrunEffect $ stylish (P.each $ words "one two three four five six") >-> P.stdoutLn onetwo-*-threefour-*-fivesix-*-Join a stream of (s into a single ( Fold each ( in a producer ) Vpurely folds :: Monad m => Fold a b -> Stream (Producer a m) m r -> Producer b m r Fold each ( in a ( stream, monadically Zimpurely foldsM :: Monad m => FoldM a b -> Stream (Producer a m) m r -> Producer b m r (takes' n) only keeps the first n (s of a linked ) of  ProducersUnlike , - is not functor-general - it is aware that a ( can be drainedH, as functors cannot generally be. Here, then, we drain the unused (Us in order to preserve the return value. This makes it a suitable argument for .  Step functionInitial accumulatorExtraction function Step functionInitial accumulatorExtraction function     None Send an HTTP + and wait for an HTTP , Create a -( from a content length and an effectful . Create a - from an effectful . is more flexible than C, but requires the server to support chunked transfer encoding.This is a quick method - oleg would call it 'unprofessional' - to bring a web page in view. It sparks its own internal manager and closes itself. Thus something like this makes senseArunResourceT $ Q.putStrLn $ simpleHttp "http://lpaste.net/raw/12"chunk _ [] = [];chunk n xs = let h = take n xs in h : (chunk n (drop n xs))but if you try something like\rest <- runResourceT $ Q.putStrLn $ Q.splitAt 40 $ simpleHTTP "http://lpaste.net/raw/146532"&import Data.ByteString.Streaming.HTTP "it will just be good luck if with runResourceT $ Q.putStrLn restyou get the rest of the file:  import qualified Data.ByteString.Streaming.Char8 as Q main = runResourceT $ Q.putStrLn $ simpleHTTP "http://lpaste.net/raw/146532" rather than  J*** Exception: <socket: 13>: hGetBuf: illegal operation (handle is closed)DSince, of course, the handle was already closed by the first use of  runResourceT6. The same applies of course to the more hygienic - above, which permits one to extract an IO (ByteString IO r) , by using splitAt or the like. UThe reaction of some streaming-io libraries was simply to forbid operations like splitAt. That this paternalism was not viewed as simply outrageous is a consequence of the opacity of the older iteratee-io libraries. It is obviousj that I can no more run an effectful bytestring after I have made its effects impossible by using  runResourceT (which basically means closeEverythingDown). I might as well try to run it after tossing my machine into the flames. Similarly, it is obvious that I cannot read from a handle after I have applied hClose6; there is simply no difference between the two cases.Handler for response/0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~-+,/0NoneThe result of a parse (Either a ([String], String)#), with the unconsumed byte stream.O:set -XOverloadedStrings -- the string literal below is a streaming bytestringJ(r,rest1) <- AS.parse (A.scientific <* A.many' A.space) "12.3 4.56 78.3"print r Left 12.3=(s,rest2) <- AS.parse (A.scientific <* A.many' A.space) rest1print s Left 4.56=(t,rest3) <- AS.parse (A.scientific <* A.many' A.space) rest2print t Left 78.3Q.putStrLn rest3 Apply a parser repeatedly to a stream of bytes, streaming the parsed values, but ending when the parser fails.or the bytes run out.JS.print $ AS.parsed (A.scientific <* A.many' A.space) $ "12.3 4.56 78.9"12.34.5678.918.282 Attoparsec parser Raw input/   None+35IN"An  attoparsec7 error that happened while parsing the raw JSON string.#An aeson0 error that happened while trying to convert a  to an    instance, as reported by  .%An error while decoding a JSON value.$This instance allows using   with  and 0 instance Error (DecodingError, Producer a m r)Consecutively parse a elements from the given Producer" using the given parser (such as  or .), skipping any leading whitespace each time.This Producerf runs until it either runs out of input or until a decoding failure occurs, in which case it returns  with a ! and a Producer! with any leftovers. You can use   to turn the  return value into an  monad transformer.Like , except it accepts any  instance, not just  or .%VGiven a bytestring, parse a top level json entity - returning any leftover bytes. &`Resolve a succession of top-level json items into a corresponding stream of Haskell values. '(Experimental. Parse a bytestring with a  json-streams parser. The function will read through the whole of a single top level json entity, streaming the valid parses as they arise. (It will thus for example parse an infinite json bytestring, though these are rare in practice ...) ~If the parser is fitted to recognize only one thing, then zero or one item will be yielded; if it uses combinators like arrayOf2, it will stream many values as they arise. +This function is closely modelled on  and  !"#$%&'!"#$%&'!"#$%&'!"#$%&' !" !# !$%&'()*+,-./0123456789:;<=>?@ABCDE !FGHIJKLJKMJKNOPQRSJTUJTVJTWJTXJTYJTZJT[JT\JT]J^_J^`J^aJ^bJ^cJdeJdfJdgJdhJdiJdjJdkJdlJdmJdnJdoJdpJdqJdrJstJsuJsvJwxJwyJwzJw{Jw|Jw}Jw~JwJwJwJwJJJJJJJJJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJKJK      !" #$ #%&'strea_3EAP75yxq9OCxtsxgguYa0Data.ByteString.Streaming.HTTPStreaming.Pipes$Data.Attoparsec.ByteString.StreamingData.ByteString.Streaming.Aeson Control.Monadjoin Data.AesonValueAFromJSONError Pipes.LifterrorP Pipes.AesondecodeddecodedLdecode parseValueControl.Monad.Trans.ErrorErrorTencodeData.JsonStream.ParserparseByteStringparseLazyByteStringresou_DSmpSfVl1RZ5REVgSSG8K1Control.Monad.Trans.Resource runResourceT%Control.Monad.Trans.Resource.Internal liftResourceT MonadResource ResourceTstrea_44Y8GrM5KtfIuFD4ImGM2uStreaming.Internaltakes intercalatesmaps fromStreamtoStreamtoStreamingByteStringfromStreamingByteStringspanbreaksplitbreakssplitAtgroupBygroupgroupsBy groupsBy'groupschunksOfconcatsfoldsfoldsMtakes'withHTTPstreamNstream simpleHTTPMessageparseparsed DecodingErrorAttoparsecError FromJSONError streamParsepipes_K0zcXSRuUPLIEZKISYW7lv Pipes.CoreProducerStreamghc-prim GHC.Classes==httpc_BWVh5rW4Klf8w2nrHHFwU1Network.HTTP.Client.TypesRequestResponse RequestBodystrea_17Zu84vJTp7BIXX6JGK1t6"Data.ByteString.Streaming.Internal ByteStringtofromNetwork.HTTP.ClientmanagerSetProxymanagerSetSecureProxymanagerSetInsecureProxywithResponseHistoryresponseOpenHistoryhrFinalResponsehrFinalRequest hrRedirectsHistoriedResponseNetwork.HTTP.Client.Core responseClose responseOpen httpNoBodyhttpLbs withResponseNetwork.HTTP.Client.CookiesgenerateCookieinsertCheckedCookiereceiveSetCookieupdateCookieJarcomputeCookieStringinsertCookiesIntoRequestevictExpiredCookies!removeExistingCookieFromCookieJardestroyCookieJarcreateCookieJar pathMatches defaultPath domainMatches isIpAddressNetwork.HTTP.Client.Body brConsume brReadSomebrReadNetwork.HTTP.Client.Manager defaultProxyproxyEnvironmentNamedproxyEnvironmentuseProxynoProxyproxyFromRequest withManager closeManager newManagerdefaultManagerSettingsrawConnectionModifySocketNetwork.HTTP.Client.RequestobservedStreamFile streamFilesetQueryStringurlEncodedBodyapplyBasicProxyAuthapplyBasicAuthgetUriparseUrl BodyReaderTlsExceptionHostPort!ResponseLengthAndChunkingBothUsedInvalidProxyEnvironmentVariableHttpZlibExceptionInvalidDestinationHostIncompleteHeadersInvalidChunkHeadersResponseBodyTooShortTlsNotSupported TlsExceptionNoResponseDataReceivedProxyConnectExceptionInternalIOException InvalidHeaderInvalidStatusLineExpectedBlankAfter100ContinueFailedConnectionException2FailedConnectionExceptionResponseTimeoutOverlongHeadersHandshakeFailedHttpParserExceptionTooManyRetriesUnparseableRedirectTooManyRedirectsInvalidUrlExceptionStatusCodeException HttpExceptioncookie_http_onlycookie_secure_onlycookie_host_onlycookie_persistentcookie_last_access_timecookie_creation_time cookie_path cookie_domaincookie_expiry_time cookie_value cookie_nameCookie CookieJar proxyPort proxyHostProxyRequestBodyStreamChunkedRequestBodyStreamRequestBodyBuilder RequestBodyBSRequestBodyLBSPopper NeedsPopper GivesPopperrequestVersion cookieJarresponseTimeout checkStatus redirectCount decompressproxy requestBodyrequestHeaders queryStringpathporthostsecuremethodresponseCookieJar responseBodyresponseHeadersresponseVersionresponseStatusmanagerModifyRequestmanagerIdleConnectionCountmanagerWrapIOExceptionmanagerRetryableExceptionmanagerResponseTimeoutmanagerTlsConnectionmanagerRawConnectionmanagerConnCountManagerSettings ProxyOverrideManagergetHttpManagerHasHttpManager thisChunkSize readSoFarfileSizeStreamFileStatushttpc_C3RXJYjmAeqLHyx5Mwrz3FNetwork.HTTP.Client.TLSgetTlsConnectiontlsManagerSettingsmkManagerSettingsattop_KGz8kXnHawX2yTRIBzGnQa#Data.Attoparsec.ByteString.Internalmatch parseOnly peekWord8' peekWord8notWord8word8anyWord8 notInClassinClass takeWhile1 runScannerscantakeLazyByteStringtakeByteString takeWhiletakeTill skipWhilestringtake satisfyWithskipsatisfyParserData.Attoparsec.CombinatorfeedeitherPcount skipMany1skipMany manyTill'manyTillsepBy1'sepBy1sepBy'sepBymany1'many1many'optionchoicetryData.Attoparsec.InternalatEnd endOfInputcompareResults ParsingErrorbase Data.EitherLeftEitheraeson_Gu0b3XUgQSw686IUxDNRrIData.Aeson.Types.ClassToJSONData.Aeson.Types.InternalArrayObject$fExceptionDecodingError