Struct M2dirFlags 

pub struct M2dirFlags(/* private fields */);

Set of flags attached to an m2dir entry.

Each flag is an arbitrary UTF-8 string; serialization to the .meta/<id>.flags metadata file is one flag per line.

Implementations

impl M2dirFlags

pub fn iter(&self) -> impl Iterator<Item = &str>

Returns an iterator over the flags in this set.

pub fn len(&self) -> usize

Returns the number of flags in this set.

pub fn is_empty(&self) -> bool

Returns true if the set contains no flags.

pub fn insert(&mut self, flag: impl Into<String>) -> bool

Inserts a flag into the set. Returns true if it was not already present.

pub fn remove(&mut self, flag: &str) -> bool

Removes a flag from the set. Returns true if it was present.

pub fn contains(&self, flag: &str) -> bool

Returns true if the set contains the given flag.

pub fn extend(&mut self, flags: M2dirFlags)

Adds every flag from flags to this set.

pub fn difference(&mut self, flags: &M2dirFlags)

Removes every flag in flags from this set.

pub fn to_meta(&self) -> String

Serializes the flag set to its on-disk .flags representation: one flag per line, deterministic alphabetical order.

pub fn from_meta(contents: &str) -> Self

Parses a .flags metadata payload (one flag per line, blanks ignored).

Trait Implementations

impl Clone for M2dirFlags

fn clone(&self) -> M2dirFlags

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for M2dirFlags

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

Formats the value using the given formatter.

impl Default for M2dirFlags

fn default() -> M2dirFlags

Returns the “default value” for a type.

impl Display for M2dirFlags

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

Formats the value using the given formatter.

impl Eq for M2dirFlags

impl From<BTreeSet<String>> for M2dirFlags

fn from(set: BTreeSet<String>) -> Self

Converts to this type from the input type.

impl From<M2dirFlags> for BTreeSet<String>

fn from(flags: M2dirFlags) -> Self

Converts to this type from the input type.

impl<'a> FromIterator<&'a str> for M2dirFlags

fn from_iter<I: IntoIterator<Item = &'a str>>(iter: I) -> Self

Creates a value from an iterator.

impl FromIterator<String> for M2dirFlags

fn from_iter<I: IntoIterator<Item = String>>(iter: I) -> Self

Creates a value from an iterator.

impl Ord for M2dirFlags

fn cmp(&self, other: &M2dirFlags) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for M2dirFlags

fn eq(&self, other: &M2dirFlags) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for M2dirFlags

fn partial_cmp(&self, other: &M2dirFlags) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for M2dirFlags