scala-adt-enums SKILL.md skillA
scala-adt-enums from cxcscmu/skilllearnbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cxcscmu/skilllearnbench/scala-adt-enums@git:20260424.d50cf5aPins git:20260424.d50cf5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cxcscmu/skilllearnbench
- Path
skills/b1-one-shot-claude-haiku-4-5/python-scala-translation/scala-adt-enums/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260424.d50cf5a, committed Apr 24, 2026
- Size
- 6,395 bytes
- Repository stars
- 91
- License
- MIT
Translating Python Enums and Protocols to Scala sealed traits and algebraic data types.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Scala ADTs, Sealed Traits, and Enums for Python Developers
## Enums
### Python Enum
```python
from enum import Enum
class TokenType(Enum):
STRING = "string"
NUMERIC = "numeric"
TEMPORAL = "temporal"
STRUCTURED = "structured"
BINARY = "binary"
NULL = "null"
# Usage
t = TokenType.STRING
t.value # "string"
t.name # "STRING"
```
### Scala Enum (Scala 2.13 - using sealed trait + case objects)
```scala
sealed trait TokenType {
def value: String
}
object TokenType {
case object STRING extends TokenType { val value = "string" }
case object NUMERIC extends TokenType { val value = "numeric" }
case object TEMPORAL extends TokenType { val value = "temporal" }
case object STRUCTURED extends TokenType { val value = "structured" }
case object BINARY extends TokenType { val value = "binary" }
case object NULL extends TokenType { val value = "null" }
// Helper for pattern matching
def all: List[TokenType] = List(STRING, NUMERIC, TEMPORAL, STRUCTURED, BINARY, NULL)
}
// Usage
val t: TokenType = TokenType.STRING
t.value // "string"
```
## Algebraic Data Types (ADTs)
### Python Union Types
```python
from typing import Union
…Read the whole file at its exact version.
How to install
mdr add cxcscmu/skilllearnbench/scala-adt-enums@sha256:76e688a8f4d59131The line at the top of this page pins the label git:20260424.d50cf5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_op3ypie2ybppseic)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Apr 24, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6395 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cxcscmu/skilllearnbench · 91 stars · license MIT · pushed 2026-10-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_op3ypie2ybppseic GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/scala-adt-enums GET https://markdownregistry.com/api/v1/blob/76e688a8f4d591312c143845bda733892bc1a32e22c15bd9534e332e812da60c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.