AGENT SKILL

run2_scala-circe-json

Using circe for JSON tokenization in Scala, including printing, cursor navigation, and path-based access.

License 许可
MIT
最近更新
2026-10-02
Stars
★ 93
Forks
8

01 前言 Front Matter

name
run2_scala-circe-json
description
Using circe for JSON tokenization in Scala, including printing, cursor navigation, and path-based access.

03 SKILL.md 正文

Circe JSON for Tokenization

Printing

import io.circe.{Json, Printer}

val compact = Printer.noSpaces.print(json)
val pretty = Printer.spaces2.print(json)

Path-Based Navigation with ACursor

import io.circe.ACursor

def navigate(json: Json, path: String): Option[Json] = {
  val cursor = path.split("\\.").foldLeft(json.hcursor: ACursor) { (c, part) =>
    if (part.forall(_.isDigit)) c.downN(part.toInt)
    else c.downField(part)
  }
  cursor.focus
}

Key Differences from Python json module

  • circe uses Json ADT instead of Python's dynamic types
  • No need for recursive JsonValue type alias - Json is already recursive
  • Printing via Printer instances rather than json.dumps kwargs

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