Follow the following steps to write a function document that conforms to Golang document writing specifications: 1. Function signature (including function name, parameters and return value type); 2. Function description (briefly describing function functions); 3. Parameters (specified name, type and description); 4. Return value (specify type and description); 5. Collapse and expansion (use annotations to control the expansion and collapse of the description).
Golang’s function documentation follows specific specifications to ensure consistency and readability. Here is a step-by-step guide to writing function documentation that conforms to these specifications:
1. Function signature
Include the function signature before the code block, including the function name, parameter list and return value type.
func Sum(a, b int) int
2. Function description
Below the function signature, describe the function of the function in a short sentence.
// Sum returns the sum of two integers. func Sum(a, b int) int
3. Parameters
For each parameter, specify its name, type, and optional description.
// a is the first number to be summed. // b is the second number to be summed. func Sum(a, b int) int
4. Return value
Specify the type and optional description of the value returned by the function.
// Sum returns the sum of two integers. // The result is an integer. func Sum(a, b int) int
5. Collapse and expand
By default, the function document is expanded, showing the full description of the parameters and return values. These descriptions can be collapsed using <!-- -->
comments to make it easier to read the function signature:
// Sum returns the sum of two integers. // <!-- --> // a is the first number to be summed. // b is the second number to be summed.
Practical example
The following is an example of a function document that conforms to Golang documentation writing specifications:
// Length returns the length of the string. // The length is an integer representing the number of UTF-8 code points in the string. func Length(s string) int
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