triplemake

README

TripleMake

The 2 argument form of make can cause all sorts of fun bugs that can be difficult to debug. This linter finds those uses and alerts you that perhaps you should consider changing them to the 3 argument form to be more explicit.

An example

package main

import "fmt"

func main() {
	// Premature optimisation: we only want to put 5 items into this slice.
	test := make([]int, 5)

	// Oops!
	test = append(test, 1)

	fmt.Println(test) // [0 0 0 0 0 1]
}

A quick rant

This is bad DX on the part of Go. The difference between Length and Capacity of slices can be difficult to understand for the kinds of people who like to do premature optimisation, and debugging this can be tricky too.