How to write sample code for Golang function documentation?

Including example code in Go function documentation is critical because it provides guidance on function usage and behavior. Best practices include: Keeping inputs and outputs concise Specifying inputs and outputs using appropriate statements Validating boundary conditions

Sample code writing in the Go function documentation

When writing Go function documentation, including example code is critical because it helps developers understand the usage and expected behavior of the function. Here are some best practices for writing effective sample code:

1. Keep it simple:

Sample code should be as short and concise as possible, containing only the key functionality of the demonstrated function necessary line. Avoid unnecessary or redundant code.

Input and output:

Explicitly specify the input parameters and expected output results of the function. This helps developers understand the function's behavior and avoid misunderstandings.

3. Use appropriate statements:

Choose appropriate statements to demonstrate the functionality of the function. For example, for a validation function, an if else statement might be appropriate, while for a string processing function, a for loop would be more appropriate.

4. Input Validation:

For functions with input validation, it is critical to include invalid input in the sample code to demonstrate error handling. This helps developers understand how functions handle unexpected situations.

5. Boundary conditions:

Consider the boundary conditions of the function and include test cases under these conditions in the sample code. This helps ensure the robustness of the function.

Practical case:

Example:

Write a function that calculates the sum of two integers.

func Sum(a, b int) int {
    return a + b
}

Sample code:

package main

import "fmt"

func main() {
    x, y := 5, 10
    sum := Sum(x, y)
    fmt.Println("The sum of", x, "and", y, "is", sum)
}

Parsing:

• Sample code clearly demonstrates how to call Sum function and print the output result.
• It contains valid input for two integers, as well as the declaration and initialization of the sum variable.
• fmt.Println The use of the function prints the result clearly.

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