Handling Multiple Command-Line Options
Learn how the command-line arguments can be handled using the flag package.
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As we’ve seen while implementing the initial version of our command-line
interface, using the os.Args variable isn’t a flexible way of handling command-line arguments. Let’s improve the tool by using the flag package to parse and
handle multiple command-line options.
Command-line flags
The flag package enables us to define command-line flags of specific types such as int or string, so we don’t need to convert them manually. This version of the tool will accept three command-line arguments:
-list: A boolean flag. When used, the tool will list all to-do items.-task: A string flag. When used, the tool will include the string argument as a new to-do item in the list.-complete: An integer flag. When used, the tool will mark the item number as completed.
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Example code
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