Chore: refactor dict module

[connortsui20]

Again, a purely cosmetic change.

(wanted to do this before implementing the batch execute)

[codspeed-hq]

CodSpeed Performance Report

Merging #5501 will degrade performances by 18.82%

_{Comparing ct/dict-refactor (5efe37e) with develop (b5d28a1)}

Summary

⚡ 12 improvements
❌ 2 regressions
✅ 1501 untouched
🆕 7 new
⏩ 119 skipped¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
🆕	decompress[("alp_for_bp_f64", 0x45b7fa0)]	N/A	29.8 ms	N/A
🆕	decompress[("datetime_for_bp", 0x45baa70)]	N/A	41.7 ms	N/A
🆕	decompress[("dict_fsst_varbin_bp_string", 0x45b9ef0)]	N/A	76.3 ms	N/A
🆕	decompress[("dict_fsst_varbin_string", 0x45b9b70)]	N/A	76.3 ms	N/A
🆕	decompress[("dict_varbinview_string", 0x45b89c0)]	N/A	75.6 ms	N/A
🆕	decompress[("for_bp_u64", 0x45b7850)]	N/A	2.5 ms	N/A
🆕	decompress[("runend_for_bp_u32", 0x45b8d50)]	N/A	2.1 ms	N/A
❌	batch[262144]	1.8 ms	2 ms	-11.48%
⚡	batch[73728]	568.2 µs	484.2 µs	+17.34%
⚡	in_place_batch[65536]	249.3 µs	208.4 µs	+19.63%
⚡	in_place_batch[73728]	299.3 µs	234.3 µs	+27.75%
⚡	in_place_batch[86016]	326.8 µs	273 µs	+19.69%
❌	in_place_pipeline[1024]	4 µs	5 µs	-18.82%
⚡	in_place_pipeline[262144]	397.3 µs	331.1 µs	+20.01%
⚡	in_place_pipeline[8192]	15.7 µs	12.7 µs	+23.61%
⚡	in_place_pipeline[86016]	132 µs	110.9 µs	+19.01%
⚡	pipeline[16384]	32 µs	27.7 µs	+15.24%
⚡	pipeline[73728]	118.4 µs	98.6 µs	+20.12%
⚡	pipeline_extra_copy[8192]	19.7 µs	17.6 µs	+11.41%
⚡	verify_all_methods[1024]	168 µs	123.5 µs	+35.99%
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

Footnotes

1. 119 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

❌ Patch coverage is 83.15217% with 31 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.61%. Comparing base (b5d28a1) to head (5efe37e).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
vortex-array/src/arrays/dict/vtable/array.rs	47.36%	10 Missing ⚠️
vortex-array/src/arrays/dict/vtable/encode.rs	0.00%	7 Missing ⚠️
vortex-array/src/arrays/dict/vtable/mod.rs	85.41%	7 Missing ⚠️
vortex-array/src/arrow/convert.rs	0.00%	6 Missing ⚠️
vortex-array/src/arrays/dict/vtable/validity.rs	97.43%	1 Missing ⚠️

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