fp-higher-order-functions SKILL.md skillA
fp-higher-order-functions from pantheon-org/tekhne is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pantheon-org/tekhne/fp-higher-order-functions@git:20260710.2a8ef15Pins git:20260710.2a8ef15 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pantheon-org/tekhne
- Path
skills/software-engineering/fp-higher-order-functions/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260710.2a8ef15, committed Jul 10, 2026
- First version recorded
- Jul 10, 2026
- Size
- 11,976 bytes
- Repository stars
- 10
- License
- MIT
Master higher-order functions, map/filter/reduce patterns for expressive data transformations.
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
# Higher-Order Functions and Functional Patterns
Higher-order functions are functions that take other functions as arguments or return functions as results. They enable powerful abstractions, code reuse, and declarative programming styles. The classic trio of map, filter, and reduce form the foundation of functional data transformation.
## Understanding Higher-Order Functions
A higher-order function is any function that does at least one of the following:
1. **Accepts functions as parameters**
2. **Returns a function as its result**
This enables composition, abstraction, and powerful declarative patterns.
### JavaScript: Basic Higher-Order Functions
```javascript
// Function that takes a function as argument
function applyOperation(x, y, operation) {
return operation(x, y);
}
const sum = applyOperation(5, 3, (a, b) => a + b); // 8
const product = applyOperation(5, 3, (a, b) => a * b); // 15
// Function that returns a function
function createMultiplier(factor) {
return function(number) {
return number * factor;
};
}
const double = createMultiplier(2);
const triple = createMultiplier(3);
console.log(double(5)); // 10
console.log(triple(5)); // 15
…Read the whole file at its exact version.
How to install
mdr add pantheon-org/tekhne/fp-higher-order-functions@sha256:301dffeb560fdd0bThe line at the top of this page pins the label git:20260710.2a8ef15, 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_mqdxp7h4mib4mosp)
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Versions
The registry has recorded 2 versions of this file, all committed on Jul 10, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260710.2a8ef15 latest | 2026-07-10 | 2a8ef15 | 11,976 B | A | view · diff |
| git:20260710.48d97ba | 2026-07-10 | 48d97ba | 10,636 B | A | view |
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 (11976 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
pantheon-org/tekhne · 10 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mqdxp7h4mib4mosp GET https://markdownregistry.com/api/v1/resolve?ref=pantheon-org/tekhne/fp-higher-order-functions GET https://markdownregistry.com/api/v1/blob/301dffeb560fdd0bc6653fd1b38c334bd41ff3774697aafd08a63d50e9ecf82a
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.