heck 0.5.0: heck::ToLowerCamelCase

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "heck"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"

[[package]]
name = "sample-heck-lower-camel-case"
version = "1.0.0"
dependencies = [
 "heck",
]

[package]
name = "sample-heck-lower-camel-case"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
heck = "=0.5.0"

[[bin]]
name = "contract"
path = "test/contract.rs"

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify heck::ToLowerCamelCase in pkg:cargo/heck@0.5.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/heck@0.5.0
Demonstrate these symbols/APIs:
  - heck::ToLowerCamelCase

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:3e4a8bad24b83eb56e10151a83ac767a5b50816bc48567541d17cb63d516109a","contract":["heck::ToLowerCamelCase::to_lower_camel_case converts space-separated words and punctuation to lowerCamelCase","heck::ToLowerCamelCase::to_lower_camel_case converts snake_case and kebab-case strings to lowerCamelCase","heck::ToLowerCamelCase::to_lower_camel_case converts PascalCase and acronyms like XMLHttpRequest to xmlHttpRequest","heck::ToLowerCamelCase::to_lower_camel_case returns an empty string for empty input and lowercases a single uppercase word"],"goal":"verify heck::ToLowerCamelCase in pkg:cargo/heck@0.5.0","kind":"HOW","packages":["pkg:cargo/heck@0.5.0"],"schemaVersion":1,"symbols":["heck::ToLowerCamelCase"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/heck@0.5.0"],"schemaVersion":1,"subject":"pkg:cargo/heck@0.5.0","symbols":["heck::ToLowerCamelCase"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify heck::ToLowerCamelCase in pkg:cargo/heck@0.5.0",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/heck@0.5.0"
  ],
  "symbols": [
    "heck::ToLowerCamelCase"
  ]
}

use heck::ToLowerCamelCase;

fn main() {
    // 1. Converts space-separated words to lowerCamelCase
    assert_eq!("We carry a new world here, in our hearts.".to_lower_camel_case(), "weCarryANewWorldHereInOurHearts");

    // 2. Converts snake_case and kebab-case strings to lowerCamelCase
    assert_eq!("hello_world_example".to_lower_camel_case(), "helloWorldExample");
    assert_eq!("kebab-case-identifier".to_lower_camel_case(), "kebabCaseIdentifier");

    // 3. Converts UpperCamelCase / PascalCase to lowerCamelCase
    assert_eq!("UpperCamelCase".to_lower_camel_case(), "upperCamelCase");
    assert_eq!("XMLHttpRequest".to_lower_camel_case(), "xmlHttpRequest");

    // 4. Handles empty string and single word
    assert_eq!("".to_lower_camel_case(), "");
    assert_eq!("SINGLE".to_lower_camel_case(), "single");

    println!("All heck::ToLowerCamelCase contract assertions passed.");
}