feat: Add BoundedVec by michael-weigelt · Pull Request #702 · dfinity/candid

michael-weigelt · 2026-02-13T14:43:05Z

This makes the BoundedVec type, thus far used in the management canister types, available for public use.

github-actions · 2026-02-13T14:48:15Z

Name	Max Mem (Kb)	Encode	Decode
blob	4_224	4_206_625	2_122_439
btreemap	75_456	4_729_808_739	15_179_970_550
nns	128	2_043_084 ($\textcolor{green}{-0.01\%}$)	5_598_596 ($\textcolor{red}{0.28\%}$)
nns_list_proposal	1_088	6_871_784 ($\textcolor{green}{-0.12\%}$)	67_997_693 ($\textcolor{green}{-0.02\%}$)
option_list	128	8_041_649	26_784_438
text	6_336	4_203_542	7_877_879
variant_list	128	8_095_450	25_434_051
vec_int16	16_704	123_692_847	1_017_143_280

Parser cost: 17_102_981
Extra args: 3_449_828

Click to see raw report

---------------------------------------------------

Benchmark: blob
  total:
    instructions: 6.33 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 4.21 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 2.12 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: btreemap
  total:
    instructions: 19.91 B (no change)
    heap_increase: 1179 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 4.73 B (no change)
    heap_increase: 159 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 15.18 B (no change)
    heap_increase: 1020 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: extra_args
  total:
    instructions: 3.45 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: nns
  total:
    instructions: 25.59 M (0.06%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  0. Parsing (scope):
    calls: 1 (no change)
    instructions: 17.10 M (no change)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 2.04 M (-0.01%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 5.60 M (0.28%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: nns_list_proposal
  total:
    instructions: 74.87 M (-0.03%) (change within noise threshold)
    heap_increase: 17 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 6.87 M (-0.12%) (change within noise threshold)
    heap_increase: 3 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 68.00 M (-0.02%) (change within noise threshold)
    heap_increase: 14 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: option_list
  total:
    instructions: 34.83 M (no change)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 8.04 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 26.78 M (no change)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: text
  total:
    instructions: 12.08 M (no change)
    heap_increase: 99 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 4.20 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 7.88 M (no change)
    heap_increase: 33 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: variant_list
  total:
    instructions: 33.53 M (no change)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 8.10 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 25.43 M (no change)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: vec_int16
  total:
    instructions: 1.14 B (no change)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    calls: 1 (no change)
    instructions: 123.69 M (no change)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    calls: 1 (no change)
    instructions: 1.02 B (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Summary:
  instructions:
    status:   No significant changes 👍
    counts:   [total 9 | regressed 0 | improved 0 | new 0 | unchanged 9]
    change:   [max +15.33K | p75 0 | median 0 | p25 0 | min -19.15K]
    change %: [max +0.06% | p75 0.00% | median 0.00% | p25 0.00% | min -0.03%]

  heap_increase:
    status:   No significant changes 👍
    counts:   [total 9 | regressed 0 | improved 0 | new 0 | unchanged 9]
    change:   [max 0 | p75 0 | median 0 | p25 0 | min 0]
    change %: [max 0.00% | p75 0.00% | median 0.00% | p25 0.00% | min 0.00%]

  stable_memory_increase:
    status:   No significant changes 👍
    counts:   [total 9 | regressed 0 | improved 0 | new 0 | unchanged 9]
    change:   [max 0 | p75 0 | median 0 | p25 0 | min 0]
    change %: [max 0.00% | p75 0.00% | median 0.00% | p25 0.00% | min 0.00%]

---------------------------------------------------
Successfully persisted results to canbench_results.yml

rust/candid/src/types/bounded_vec.rs

Unblocks #702 --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

wip

338481f

fix

9068eab

michael-weigelt marked this pull request as ready for review February 13, 2026 15:26

michael-weigelt requested a review from a team as a code owner February 13, 2026 15:26

fix

c02f134

dsarlis reviewed Feb 16, 2026

View reviewed changes

rust/candid/src/types/bounded_vec.rs Outdated Show resolved Hide resolved

lwshang mentioned this pull request Feb 19, 2026

fix: avoid double_parens lint in Decode! macro for single value #703

Merged

lwshang added a commit that referenced this pull request Feb 19, 2026

fix: avoid double_parens lint in Decode! macro for single value (#703)

fafac81

Unblocks #702 --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

lwshang and others added 3 commits February 19, 2026 09:54

Merge branch 'master' into mwe/bounded_vec

d05ecd6

doctest

5f6d1a2

fix

f1c73af

dsarlis approved these changes Feb 20, 2026

View reviewed changes

docs: update changelog

e13783b

lwshang approved these changes Feb 20, 2026

View reviewed changes

lwshang merged commit a267d71 into master Feb 20, 2026
11 checks passed

lwshang deleted the mwe/bounded_vec branch February 20, 2026 20:37

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feat: Add BoundedVec #702

feat: Add BoundedVec #702
lwshang merged 7 commits intomasterfrom
mwe/bounded_vec

michael-weigelt commented Feb 13, 2026 •

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michael-weigelt commented Feb 13, 2026 •

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