Golint

golint不同于go fmt，用于检测代码的规范性。

一、用法

Usage of golint:
    golint [flags] # runs on package in current directory
    golint [flags] [packages]
    golint [flags] [directories] # where a '/...' suffix includes all sub-directories
    golint [flags] [files] # all must belong to a single package
Flags:
  -min_confidence float
        minimum confidence of a problem to print it (default 0.8)
  -set_exit_status
        set exit status to 1 if any issues are found

考虑以下代码：

func GetSelectedDeviceIndex() []int {
    for {
        log.Println("Select Target Device: ")
        index, err := utils.ScanlnInteger()
        if err == nil {
            return utils.UniqueIntegerArray(index)
        }
        else {
            log.Println("Invalid Input!")
        }
    }
}

在使用golint后，就会返回if block ends with a return statement, so drop this else and outdent its block的提示，需要做出如下改动：

func GetSelectedDeviceIndex() []int {
    for {
        log.Println("Select Target Device: ")
        index, err := utils.ScanlnInteger()
        if err == nil {
            return utils.UniqueIntegerArray(index)
        }
        log.Println("Invalid Input!")
    }
}

二、Goland集成golint

1. 点击Files->Settings->Tools->File Watcher，并点击+，选择custom。

2. 填入golint的位置和参数，并根据需求选择advanced options。