python-scala-idioms SKILL.md skillA
python-scala-idioms 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/python-scala-idioms@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-opus-4-6/python-scala-translation/python-scala-idioms/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260424.d50cf5a, committed Apr 24, 2026
- Size
- 1,138 bytes
- Repository stars
- 91
- License
- MIT
Guide for writing idiomatic Scala including naming conventions, error handling, and pattern matching.
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 Idioms and Conventions
## Naming Conventions
- Classes/Traits: `PascalCase`
- Methods/Fields: `camelCase` (not `snake_case`)
- Constants: `PascalCase` in companion objects or `UPPER_CASE` for enum-like
- Package: `lowercase`
- Type parameters: single uppercase letter `T`, `A`, `B`
## Error Handling
```scala
// Python: raise ValueError -> Scala: throw or Either/Try
// Prefer Option for absence, Either/Try for errors
def tokenizePath(value: Json, path: String): Option[Token]
```
## Pattern Matching (replaces isinstance chains)
```scala
// Python: if isinstance(value, str): ...
// Scala:
value match {
case s: String => ...
case i: Int => ...
case _ => ...
}
```
## String Interpolation
```scala
// Python: f"{value:.6f}" -> Scala: f"$value%.6f" or s"$value"
```
## Companion Objects
```scala
// Factory methods, constants go in companion objects
object TemporalTokenizer {
val IsoFormat = "yyyy-MM-dd'T'HH:mm:ss"
val DateFormat = "yyyy-MM-dd"
}
```Read the whole file at its exact version.
How to install
mdr add cxcscmu/skilllearnbench/python-scala-idioms@sha256:5309a89083fe27b3The 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_hgc4i7xj2lbdyovd)
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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 (1138 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_hgc4i7xj2lbdyovd GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/python-scala-idioms GET https://markdownregistry.com/api/v1/blob/5309a89083fe27b30ec14284b005040fa05564f557a5c1fa90307ca1742636a7
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.