Scala circe json

Skill cxcscmu/SkillLearnBench/skills/b4-skill-creator-gemini-3.1-pro-preview/python-scala-translation/scala-circe-json

How to use circe for JSON processing in Scala. Use this skill whenever translating Python json operations to Scala or working with circe libraries.From its SKILL.md

Install

npx -y skills add cxcscmu/SkillLearnBench --skill scala-circe-json

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SKILL.md

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Scala Circe JSON

When translating Python's json module to Scala, use io.circe when requested or working with Json data structures.

Parsing JSON

Parse JSON string: io.circe.parser.parse(string) returns Either[ParsingFailure, Json].
Extract value safely: parse(string).getOrElse(Json.Null).

Generating JSON Strings

Compact string output: json.noSpaces.
Pretty printed output (indented): json.spaces2.

Navigating JSON

Objects: json.asObject returns Option[JsonObject].
Arrays: json.asArray returns Option[Vector[Json]].
Access object properties: jsonObject(key) or jsonObject.toMap.get(key).
Access array elements: jsonArray.lift(index).

What ships with it

Read from the repository

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