140's 8, box layout, written in aup with no new opcode (aup's examples/layout.aup: a subset of CSS Flexbox 1 written down first, one line, row or column, padding, gap, six justify-content, four align-items, grow and shrink with 9.7's loop, cross sizes stretched, nothing sized by content): 2,000 random trees (29,388 nodes; 7,659 items frozen at their padding by the loop) are Taffy 0.15's within 0.01 (layout_taffy, built by cargo; the worst 8.3e-5) and layout.py's bit for bit on the three paths, the paths the same; the single-pass subset first tried refused 66% of trees, so the loop came in; Taffy given min sizes equal to the padding (given 0 it floors at 0 while resolving lengths, where 9.7 floors the content box), the reference adding from the left (sum compensates since Python 3.12); module_specs in make check: 100 trees (tests/specs/layout); bars: 116 lines against Python's 54, 4,754 ns a node, Taffy's 644 (7.4x), pure Python 5,396 (Pure 1.14x faster), 1,494 instructions a node (9.7's loop 44%); four frictions; aup's rows read by position no longer copy (99,067 ns a node before); the suite table's row 8; CHECKPOINT's direction row

1 files changed, 9 insertions, 0 deletions

diff --git a/research/experiments/044-specs/layout_taffy/Cargo.toml b/research/experiments/044-specs/layout_taffy/Cargo.toml
new file mode 100644
index 0000000..ef3c005
--- /dev/null
+++ b/research/experiments/044-specs/layout_taffy/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "layout_taffy"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+taffy = { version = "=0.15.0", default-features = false, features = ["std", "taffy_tree", "flexbox"] }
+serde_json = "1"