question: Please tell me the meaning of 255.

[itcuihao]

• With issues:
  Please tell me the meaning of 255.

Description

How to reproduce

func countParams(path string) uint8 {
	var n uint
	for i := 0; i < len(path); i++ {
		if path[i] != ':' && path[i] != '*' {
			continue
		}
		n++
	}
	if n >= 255 {
		return 255
	}
	return uint8(n)
}

• go version:go version go1.13 windows/amd64
• gin version (or commit ref): master
• operating system:

[Doarakko]

uint8 is unsigned integer 8 bit.
8 bits can represent 0 to 255(2**8-1)

[itcuihao]

Does it mean that the length of path cannot exceed 255? Why is it so set?

[cpl]

If I am reading the function correctly, it's counting the named params (:name, :id in the defined path) and not the path length. Check the function usage to understand the possible limtations around it.

[yeqown]

there isn't 255 anymore 😂

https://github.com/gin-gonic/gin/blob/b01605bb5b43dbf33781970af5ad6633e5549fd1/tree_test.go#L87-94