我最近发布了关于使用HXT泡菜进行解析的文章。经过一番阅读后,我决定改用常规的HXT。
但是,我无法创建列表,即。我有一个XML文档:
<meta>
<sampleQuery>sample1</sampleQuery>
<sampleQuery>sample2</sampleQuery>
</meta>
和解析函数
parseMeta =
proc x -> do
meta <- deep (isElem >>> hasName "meta") -< x
sampleQueries <- getText <<< getChildren <<< deep (hasName "sampleQuery") -< meta
returnA -< Meta sampleQueries
sampleQueries应该具有[String]类型(在这种情况下为[“sample1”,“sample2”])但我无法实现此目的。
答案 0 :(得分:2)
箭头符号在这里似乎有些过分。
import Text.XML.HXT.Core
xml = unlines
[ "<meta>"
, "<sampleQuery>sample1</sampleQuery>"
, "<sampleQuery>sample2</sampleQuery>"
, "</meta>"
]
queries = hasName "meta" /> hasName "sampleQuery" /> getText
main = runX (readString [] xml /> queries) >>= print
这将按预期打印["sample1","sample2"]
。