Guides

Boolean Flags

Parse option flags without explicit values

Options without = are interpreted as boolean flags.

prop:"'database.host',optional"

Map the flag to a boolean field.

type PropTag struct {
	Key      string `option:"value"`
	Optional bool   `option:"optional"`
}

When the optional flag is present, Optional becomes true.

Primary Value

Parse the first value in a tag expression

Key Value Options

Parse named options with values