Struct FitsHeaderCard 

pub struct FitsHeaderCard { /* private fields */ }

Available on crate feature fits only.

A card within an HDU header section.

Examples

use astro_rs::fits::FitsHeaderCard;

let card_raw = *b"SIMPLE  =                    T / FITS STANDARD                                  ";
let mut card = FitsHeaderCard::from(card_raw);

assert_eq!(*card.keyword(), "SIMPLE");
// deserializes value and comment, discarding padding
assert_eq!(*card.get_value::<bool>()?, true);
assert_eq!(*card.get_comment()?, String::from("FITS STANDARD"));

// re-serialize the header card
let comparison: [u8; 80] = card.into();
assert_eq!(comparison, card_raw);

Implementations

impl FitsHeaderCard

pub fn keyword(&self) -> &FitsHeaderKeyword

Gets the keyword of the header card.

pub fn get_value<T: FitsHeaderValue + 'static>( &mut self, ) -> Result<Rc<T>, FitsHeaderError>

Gets the value of the header card. If the value has not yet been deserialized, the deserialization process is attempted. If the process succeeds, the deserialized value is cached.

Examples

use astro_rs::fits::*;

let mut card = FitsHeaderCard::from(
    *b"SIMPLE  =                    T                                                  ",
);
assert!(card.get_value::<Bitpix>().is_err());
assert!(card.get_value::<bool>().map(|value| *value).unwrap_or_default());
// value is now cached, deserialization is not attempted, but types differ
assert!(card.get_value::<u32>().is_err());
assert!(card.get_value::<bool>().map(|value| *value).unwrap_or_default());

pub fn get_comment(&mut self) -> Result<Rc<String>, FitsHeaderError>

Gets the comment section of the header card.

Examples

use astro_rs::fits::FitsHeaderCard;

let mut card = FitsHeaderCard::from(*b"SIMPLE  =                    T / FITS STANDARD                                  ");
assert_eq!(*card.get_comment()?, String::from("FITS STANDARD"));

Trait Implementations

impl Clone for FitsHeaderCard

fn clone(&self) -> FitsHeaderCard

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FitsHeaderCard

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<[u8; 80]> for FitsHeaderCard

fn from(raw: [u8; 80]) -> Self

Converts to this type from the input type.

impl From<FitsHeaderCard> for [u8; 80]

fn from(card: FitsHeaderCard) -> Self

Converts to this type from the input type.