套件：golang-github-peterbourgon-ff-dev（3.4.0-2）

Flags-first package for configuration (library)

The basic idea is that myprogram -h should always show the complete configuration "surface area" of a program. Therefore, every config parameter should be defined as a flag. This module provides a simple and robust way to define those flags, and to parse them from command-line arguments, environment variables, and/or config files.

Building a command-line application in the style of kubectl or docker? ff.Command offers a declarative approach that may be simpler to write, and easier to maintain, than many common alternatives.

本頁其他語言版本如下（如何設定預設文件語言）：