Struct InvertedHammer 

pub struct InvertedHammer { /* private fields */ }

Inverted Hammer — a single-bar bullish reversal candidate.

An Inverted Hammer is the mirror of a Hammer: small real body near the bottom of the bar, a long upper shadow at least twice the body and a short or absent lower shadow.

body         = |close − open|
upper_shadow = high − max(open, close)
lower_shadow = min(open, close) − low
inverted     = upper_shadow >= 2 * body
              && lower_shadow <= body
              && body > 0

Output is +1.0 when the shape matches, 0.0 otherwise. Pattern-shape check only — no trend filter is applied; combine with a trend indicator for actionable signals.

Signed ±1 encoding

An Inverted Hammer is bullish by definition, so under the uniform candlestick sign convention (+1.0 bullish, −1.0 bearish, 0.0 none) it emits +1.0 when the shape matches and 0.0 otherwise — it never emits −1.0. The same geometry read at the top of an uptrend is the bearish ShootingStar, which carries the opposite sign.

Example

use wickra_core::{Candle, Indicator, InvertedHammer};

let mut indicator = InvertedHammer::new();
// Open 10, close 10.5, low 9.9, high 15: long upper shadow, tiny lower.
let candle = Candle::new(10.0, 15.0, 9.9, 10.5, 1.0, 0).unwrap();
assert_eq!(indicator.update(candle), Some(1.0));

Implementations

impl InvertedHammer

pub const fn new() -> InvertedHammer

Construct a new Inverted Hammer detector.

Trait Implementations

impl Clone for InvertedHammer

fn clone(&self) -> InvertedHammer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InvertedHammer

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

Formats the value using the given formatter.

impl Default for InvertedHammer

fn default() -> InvertedHammer

Returns the “default value” for a type.

impl Indicator for InvertedHammer

type Input = Candle

Type of one input data point (typically f64 for a price, or Candle / Tick).

type Output = f64

Type of one output value.

fn update(&mut self, candle: Candle) -> Option<f64>

Feed one new data point into the indicator and return the freshly computed output, or None if the indicator is still warming up.

fn reset(&mut self)

Reset all internal state, leaving the indicator equivalent to a freshly constructed instance with the same parameters.

fn warmup_period(&self) -> usize

Number of inputs required before the first non-None output can be produced.

fn is_ready(&self) -> bool

Whether the indicator has emitted at least one value since the last reset.

fn name(&self) -> &'static str

Stable, human-readable indicator name. Used by chaining and diagnostics.