Struct Parameters

pub struct Parameters { /* private fields */ }

A new type for a set of parameters or name/value pairs.

Each parameter consists of the name of the parameter and its value.

Implementations

impl Parameters

pub fn empty() -> Self

Creates and empty set of parameters.

pub fn new() -> Self

Creates a new set of parameters, which is empty.

pub fn with_capacity(capacity: usize) -> Self

Creates a new set of parameters with the given capacity.

When the number of parameters to be inserted in the new parameter set is known beforehand using this function can speed up memory allocation.

pub fn is_empty(&self) -> bool

Returns whether this parameter set is empty.

pub fn iter(&self) -> ParameterIter<'_>

Returns an Iterator over the parameters in this set.

pub fn insert<K, V>(&mut self, name: K, value: V)

where K: Into<String>, V: Into<Value>,

Inserts a name/value pair as a new parameter into this set.

Trait Implementations

impl Clone for Parameters

fn clone(&self) -> Parameters

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Parameters

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

Formats the value using the given formatter.

impl Default for Parameters

fn default() -> Self

Returns the “default value” for a type.

impl Display for Parameters

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

Formats the value using the given formatter.

impl<K, V> Extend<(K, V)> for Parameters

where K: Into<String>, V: Into<Value>,

fn extend<T: IntoIterator<Item = (K, V)>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<K, V> From<Vec<(K, V)>> for Parameters

where K: Into<String>, V: Into<Value>,

fn from(list: Vec<(K, V)>) -> Self

Converts to this type from the input type.

impl<'i, K, V> FromIterator<&'i (K, V)> for Parameters

where K: Into<String> + Clone, V: Into<Value> + Clone,

fn from_iter<T: IntoIterator<Item = &'i (K, V)>>(iter: T) -> Parameters

Creates a value from an iterator.

impl<K, V> FromIterator<(K, V)> for Parameters

where K: Into<String>, V: Into<Value>,

fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Parameters

Creates a value from an iterator.

impl PartialEq for Parameters

fn eq(&self, other: &Parameters) -> 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 StructuralPartialEq for Parameters