Struct CtrStats 

pub struct CtrStats {
    pub item_id: String,
    pub impressions: u64,
    pub clicks: u64,
}

Raw impression/click counts and derived metrics for a single item.

Fields

item_id: String

The item identifier (e.g. thumbnail slug or content ID).

impressions: u64

Total number of times this item was shown to viewers.

clicks: u64

Total number of times viewers clicked/tapped this item.

Implementations

impl CtrStats

pub fn ctr(&self) -> f64

Computes the raw click-through rate: clicks / impressions.

Returns 0.0 when impressions == 0.

pub fn wilson_interval(&self, z: f64) -> (f64, f64)

Computes the Wilson score confidence interval for the CTR.

Returns (lower, upper) bounds at the given z level. Common values:

• z = 1.645 → 90 % confidence
• z = 1.960 → 95 % confidence (default)
• z = 2.576 → 99 % confidence

Returns (0.0, 0.0) when impressions == 0.

Reference

Wilson, E. B. (1927). Probable inference, the law of succession, and statistical inference. Journal of the American Statistical Association, 22(158), 209-212.

pub fn is_untracked(&self) -> bool

Returns true when this item has never been shown.

Trait Implementations

impl Clone for CtrStats

fn clone(&self) -> CtrStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CtrStats

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

Formats the value using the given formatter.

impl PartialEq for CtrStats

fn eq(&self, other: &CtrStats) -> 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 CtrStats