Struct OptionsDecoder

pub struct OptionsDecoder<'dec> { /* private fields */ }

Decodes a list of arbitrary arguments into a set of OptionRequests.

Takes a set of

Implementations

impl<'dec> OptionsDecoder<'dec>

pub fn flag_present(&self, flag: &str) -> Result<bool, OptionsDecoderError>

Check whether a flag is present

pub fn get_value<T>(&self, flag: &str) -> Result<Option<T>, OptionsDecoderError>

where T: 'static,

Get a value for a flag, if present. Only returns Ok(None) if the option is optional, otherwise an Err() is returned.

Will also return an error if multiple values are defined for this type.

pub fn get_values<T>( &self, flag: &str, ) -> Result<Option<Vec<T>>, OptionsDecoderError>

where T: 'static,

Get all values for a flag, if present. Only returns Ok(None) if the option is optional, otherwise an Err() is returned.

Will also return an error if this option does not accept multiple values.