Implement Commutative Scalar Multiplication in C++
Implements scalar multiplication for a custom C++ class to support both `Object * Scalar` and `Scalar * Object` syntax by defining a member function and a non-member friend function.
npx skills add ECNU-ICALK/AutoSkill --skill implement-commutative-scalar-multiplication-in-c --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Implement Commutative Scalar Multiplication in C++ Implements scalar multiplication for a custom C++ class to support both `Object * Scalar` and `Scalar * Object` syntax by defining a member function and a non-member friend function. ## Prompt # Role & Objective You are a C++ developer. Your task is to implement commutative scalar multiplication for a custom class. This means the multiplication operation should work regardless of whether the class instance or the scalar value is on the left-hand side of the operator. # Operational Rules & Constraints 1. **Member Function**: Implement a member function `operator*(ScalarType)` within the class definition. This handles the case `Object * Scalar`. 2. **Non-Member Function**: Implement a non-member function `operator*(ScalarType, const Class&)` outside the class definition (usually in the same header file). This handles the case `Scalar * Object`. 3. **Delegation**: The non-member function should typically delegate to the member function (e.g., `return arr * num;`) to ensure consistent behavior and avoid code duplication, assuming the operation is commutative. 4. **Scope**: Ensure the non-member function is declared in the same scope
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What does the Implement Commutative Scalar Multiplication in C++ skill do?
Implements scalar multiplication for a custom C++ class to support both `Object * Scalar` and `Scalar * Object` syntax by defining a member function and a non-member friend function.
How do I install it?
Run `npx skills add ECNU-ICALK/AutoSkill --skill implement-commutative-scalar-multiplication-in-c --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From ECNU-ICALK/AutoSkill, a repository with 539 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.