Struct bdrck_params::option::Option

pub struct Option {
    pub name: String,
    pub help: String,
    pub short_name: Optional<char>,
    pub default_value: Optional<String>,
    pub is_optional: bool,
    pub is_flag: bool,
}

An option is a non-positional parameter to a command. Options can either be normal options or flags. Normal options must be passed by name along with a value. Flags are options whose value is either true or false, and is false by default. Passing a flag by name means flipping its value to true.

Fields

name: String

help: String

short_name: Optional<char>

default_value: Optional<String>

is_optional: bool

is_flag: bool

Methods

impl Option

fn required(name: &str,
            help: &str,
            short_name: Optional<char>,
            default_value: Optional<&str>)
            -> Option

Constructs a required option. This option may have a default value. But, importantly, it will always have some value inside the command function.

fn optional(name: &str, help: &str, short_name: Optional<char>) -> Option

Construct an optional value. This option does not have a default value, and it may have no value to access inside the command function.

fn flag(name: &str, help: &str, short_name: Optional<char>) -> Option

Construct a flag option. This option's value is either true or false, and it is false unless it is explicitly passed to the command as an argument.

Trait Implementations

impl Clone for Option

fn clone(&self) -> Option

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Option

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.