What are the common errors in Golang function documentation?
Common errors in Go function documentation include: lack of description of parameter usage; syntax errors (such as exclamation marks); redundant information (repeating information already included in the function signature); inconsistent format (indentation alignment issues); lack of example usage.
Common mistakes in Go function documentation
Error 1: Lack of necessary information
func Foo(x, y int)
The function documentation lacks information describing the purpose of the parameters x
and y
.
Correct:
// Foo computes the sum of two integers. func Foo(x, y int) int
Error 2: Syntax error
//! Foo computes the sum of two integers. func Foo(x, y int) int
Exclamation mark in document!
It is a syntax error and will cause document parsing to fail.
Correct:
// Foo computes the sum of two integers. func Foo(x, y int) int
Error 3: Redundant information
// Foo computes the sum of two integers x and y. func Foo(x, y int) int
"x" and "y" are already included in Function signatures, repeating them in documentation is redundant.
Correct:
// Foo computes the sum of two integers. func Foo(x, y int) int
Error 4: Inconsistent formatting
// Foo computes the sum of two integers x and y. func Foo(x, y int) int { return x + y }
The indentation of the document should be aligned with the function code, to Improve readability.
Correct:
// Foo computes the sum of two integers. func Foo(x, y int) int { return x + y }
Error 5: Missing example usage
Documentation should contain example usage to show how to use the function:
// Foo computes the sum of two integers. func Foo(x, y int) int // Examples of how to use Foo: var ( a = Foo(1, 2) // a == 3 b = Foo(3, 4) // b == 7 )
Practical case
type Point struct { X, Y int } // Sum returns the sum of the coordinates of two points. func Sum(p1, p2 Point) (sumX, sumY int) { return p1.X + p2.X, p1.Y + p2.Y } // Example usage: func main() { point1 := Point{1, 2} point2 := Point{3, 4} sumX, sumY := Sum(point1, point2) fmt.Printf("Sum of Point1 and Point2: (%d, %d)\n", sumX, sumY) }
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