In my code, I use classTag[JValue] want to get org.json4s.JsonAST.JValue ,
but actually it returns org.json4s.JsonAST$JValue, it is strange ! why there is the $?
I am new guy use scala ,could someone answer me ? thanks a lot
json4s JValue scala classTag works wrong
103 views Asked by yang_song At
1
There are 1 answers
Related Questions in SCALA
- Spark .mapValues setup with multiple values
- Where do 'normal' println go in a scala jar, under Spark
- Serializing to disk and deserializing Scala objects using Pickling
- Where has "Show Type Info on Mouse Motion" gone in Intellij 14
- AbstractMethodError when mixing in trait nested in object - only when compiled and imported
- Scala POJO Aggregator Exception
- How to read in numbers from n lines into a Scala list?
- Spark pairRDD not working
- Scala Eclipse IDE compiler giving errors until "clean" is run
- How to port Slick 2.1 plain SQL queries to Slick 3.0
- Log of dependency does not show
- Getting unary error for escaped characters in Scala
- Akka actor invoked with a function delegate - is this bad practice?
- Json implicit format with recursive class definition
- How to create a executable jar reading files from local file system
Related Questions in JSON4S
- Error calling `JValue.extract` from distributed operations in spark-shell
- convert scala object to json using json4s
- What's the most elegant way to deconstruct a JSON array with JSON4s?
- how can i pattern match on runtime class in scala
- How to throw messages to http response from case class require?
- JSON4S does not serialize internal case class members
- scala json serialization missing fields (json4s)
- json4s serializes a case class Test("test") to "{}" on Android
- how to convert JString to Int with json4s
- Cannot extract data from json with more than 22 fields in scala 2.10
- Lift JSON JValue Extract issue
- Json4s: Trouble while trying to convert Json attribute to java.sql.Date
- How to parse and extract information from json array using json4s
- ObjectId is not serialized to JSON
- Why does this json4s code work in the scala repl but fail to compile?
Related Questions in CLASSTAG
- How to manipulate a map using a parameterized class as the key
- Scala Any => native format
- How are ClassTags made available in Scala?
- Scala get classtag from class instance
- ficus configuration load generic
- scala T is not a class
- ClassTag in Scala
- Passing case class into function arguments
- What is the meaning of a generic type like "C: ClassTag : Manifest"?
- Get ClassTag implicitly for abstract type
- Scala - How to Convert Generic List To Array and avoid "No ClassTag available for T"
- Scala: Type annotation of parameter resets ClassTag to Option and spoils type matching
- Pass a function with any case class return type as parameter
- Reading type parameter's ClassType in trait
- Converting scala list to array
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
The name you use to refer to a class/method/etc. in your code and the name it has in bytecode produced by the compiler doesn't have to be the same. Scala compiler needs to be more of this name-mangling than the Java compiler, but this specific case is same for both.
The reason is that inner classes don't really exist on JVM: they are normal classes which have an additional field containing the outer instance. The JVM name of the class looks like
<outer_class>$<inner_class>.In Scala and Java,
$in a name generally indicates it's mangled in some way (though it is a legal character for programmers to use as well).