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authormichaelt <what_is_it_to_do_anything@yahoo.com>2016-02-06 23:20:25 -0500
committermichaelt <what_is_it_to_do_anything@yahoo.com>2016-02-06 23:20:25 -0500
commitc3e06dbcca93dc0116a3f522fd514e95ec87d206 (patch)
treec607ac7cdcb43729dfad4e5a90d05e3d6eb19f17 /Pipes/Prelude
parent5cfcd4996cbc258ba67b20d700d349190e20cb6d (diff)
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little attoparsec example repaired
Diffstat (limited to 'Pipes/Prelude')
-rw-r--r--Pipes/Prelude/Text.hs22
1 files changed, 11 insertions, 11 deletions
diff --git a/Pipes/Prelude/Text.hs b/Pipes/Prelude/Text.hs
index 814da0a..d573e51 100644
--- a/Pipes/Prelude/Text.hs
+++ b/Pipes/Prelude/Text.hs
@@ -28,14 +28,14 @@ import Pipes.Safe (MonadSafe(..), runSafeT, runSafeP)
28import Prelude hiding (readFile, writeFile) 28import Prelude hiding (readFile, writeFile)
29 29
30{- $lineio 30{- $lineio
31 Line-based operations are marked with a final \-@Ln@, like 'stdinLn', 'readFileLn', etc. They are 31 Line-based operations are marked with a final \-@Ln@, like 'stdinLn', 'readFileLn', etc.
32 drop-in replacements for the line-based operations in @Pipes.Prelude@ and 32 They are drop-in 'Text' replacements for the corresponding 'String' operations in
33 @Pipes.Safe.Prelude@ - the final \-@Ln@ being added where necessary. 33 @Pipes.Prelude@ and @Pipes.Safe.Prelude@ - a final \-@Ln@ being added where necessary.
34 With them, one is producing, piping and consuming semantically significant individual texts, 34 In using them, one is producing and consuming semantically significant individual texts,
35 understood as lines, just as one would produce or pipe 'Int's or 'Char's or anything else. 35 understood as lines, just as one would produce or pipe 'Int's or 'Char's or anything else.
36 Thus, the standard materials from @Pipes@ and @Pipes.Prelude@ and 36 Thus, the standard materials from @Pipes@ and @Pipes.Prelude@ and
37 @Data.Text@ are all you need to interact with these lines as you read or write them, and 37 @Data.Text@ are all you need to work with them, and
38 you can use these operations without using any of the other material in this package. 38 you can use these operations without using any of the other modules in this package.
39 39
40 Thus, to take a trivial case, here we upper-case three lines from standard input and write 40 Thus, to take a trivial case, here we upper-case three lines from standard input and write
41 them to a file. 41 them to a file.
@@ -54,9 +54,9 @@ TWO
54THREE 54THREE
55 55
56 The point of view is very much that of @Pipes.Prelude@. It would still be the same even if 56 The point of view is very much that of @Pipes.Prelude@. It would still be the same even if
57 we did something more sophisticated, like run an ordinary attoparsec 'Text' parser on, 57 we did something a bit more sophisticated, like run an ordinary attoparsec 'Text' parser on
58 as is frequently reasonable. Here we run 58 each line, as is frequently desirable. Here we run
59 the simple attoparsec @scientific@ number parser on lines of standard input, 59 a minimal attoparsec number parser, @scientific@, on separate lines of standard input,
60 dropping bad parses with @P.concat@: 60 dropping bad parses with @P.concat@:
61 61
62>>> import qualified Data.Attoparsec.Text as A 62>>> import qualified Data.Attoparsec.Text as A
@@ -94,7 +94,7 @@ stdinLn = fromHandleLn IO.stdin
94{-# INLINABLE stdinLn #-} 94{-# INLINABLE stdinLn #-}
95 95
96 96
97{-| Write 'String's to 'IO.stdout' using 'putStrLn' 97{-| Write 'Text' lines to 'IO.stdout' using 'putStrLn'
98 98
99 Unlike 'toHandle', 'stdoutLn' gracefully terminates on a broken output pipe 99 Unlike 'toHandle', 'stdoutLn' gracefully terminates on a broken output pipe
100-} 100-}
@@ -113,7 +113,7 @@ stdoutLn = go
113 Right () -> go 113 Right () -> go
114{-# INLINABLE stdoutLn #-} 114{-# INLINABLE stdoutLn #-}
115 115
116{-| Write lines of 'Text's to 'IO.stdout'. 116{-| Write lines of 'Text' to 'IO.stdout'.
117 117
118 This does not handle a broken output pipe, but has a polymorphic return 118 This does not handle a broken output pipe, but has a polymorphic return
119 value. 119 value.