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preview: 0.19.0rc1 - higher-timeframe indicators and expression choices

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Synced from the private engine at 1e39bfa (branch feat/sweep-choice-expr),
tracked files only. Two additions to the expression API:

- tf("1h").apply(expr): evaluate an expression ON the higher timeframe's
  grid, then step-hold it onto the simulation grid without lookahead.
  Periods inside count in that timeframe's bars, so
  tf("1h").apply(sma(close, param("len"))) is a true SMA of len hourly
  closes, sweepable like any param.
- choice(name, {branch: expr}): sweep a CHOICE of expression. The selector
  becomes a grid axis; each combination resolves to its branch before
  simulation.

Wheel for this preview is attached to the v0.19.0rc1 pre-release; built
locally, not by the release pipeline, not on PyPI.
This commit is contained in:
Jimmy7892
2026-08-22 04:17:34 +02:00
parent 0b93aed93b
commit 71156abe18
5 changed files with 431 additions and 2 deletions
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pyproject.toml
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@@ -1,6 +1,6 @@
[project]
name = "manifoldbt"
version = "0.18.0"
version = "0.19.0rc1"
description = "Rust-powered backtesting engine for quantitative research"
requires-python = ">=3.9"
license = { file = "LICENSE" }