Struct Trend 

pub struct Trend {
    pub current: f64,
    pub previous: f64,
}

Comparison of a metric against an earlier period.

Fields

current: f64

previous: f64

Implementations

impl Trend

pub fn new(current: f64, previous: f64) -> Self

pub fn change_ratio(&self) -> Option<f64>

Relative change, e.g. -0.4 for a 40 % drop.

Returns None when the previous value is zero — there is no meaningful percentage change from nothing, and reporting +∞ % in the UI is worse than reporting nothing.

Trait Implementations

impl Clone for Trend

fn clone(&self) -> Trend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Trend

impl Debug for Trend

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Trend

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Trend

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Trend

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Trend