Struct mysql_async::PoolConstraints

pub struct PoolConstraints { /* fields omitted */ }

Connection pool constraints.

This type stores min and max constraints for Pool and ensures that min <= max.

Methods

impl PoolConstraints

pub fn new(min: usize, max: usize) -> Option<PoolConstraints>

Creates new PoolConstraints if constraints are valid (min <= max).

pub fn min(&self) -> usize

Lower bound of this pool constraints.

pub fn max(&self) -> usize

Upper bound of this pool constraints.

Trait Implementations

impl Default for PoolConstraints

fn default() -> Self

Returns the "default value" for a type.

impl Clone for PoolConstraints

fn clone(&self) -> PoolConstraints

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<PoolConstraints> for PoolConstraints

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for PoolConstraints

impl From<PoolConstraints> for (usize, usize)

fn from(PoolConstraints { min: min, max: max }: PoolConstraints) -> Self

Transforms constraints to a pair of (min, max).

impl Hash for PoolConstraints

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Debug for PoolConstraints

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

Formats the value using the given formatter.