28055202911
63%

Ran 23 Jun 2026 08:34PM UTC

Jobs 10

Files 980

Run time 4min

Badge

Embed ▾

Committed 23 Jun 2026 08:33PM UTC coverage: 62.794% (-0.02%) from 62.816%

Build # 28055202911

Build Type

push

github

Committed by

web-flow

Commit Message

perf(option): make AltAllArray/AltAllSeq allocation-free (#187)

AltAllArray and AltAllSeq folded over the input via the generic lazy Alt
combinator (internal/alt), which wraps every element in an F.Constant
thunk closure — one heap allocation per element. Because option's Alt just
keeps the current value when it is Some, the identical result is computed
by a direct first-Some scan with zero allocations.

Behaviour is unchanged: startWith has priority, otherwise the first Some in
the input is returned (else the last value); AltAllSeq still consumes the
whole sequence. Covered by the existing BenchmarkAltAll* / TestAltAll* suites.

Measured with the existing benchmarks (benchstat, count=10):
  AltAllArray:  12 -> 0 allocs/op,  320 B -> 0 B/op
  AltAllSeq:    15 -> 0 allocs/op,  392 B -> 0 B/op


Claude-Session: https://claude.ai/code/session_01Cm6KJg4HxtUZH997Gbcjcf

Signed-off-by: Nishant Mehta <nishantmehta.n@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Coverage Stats

32987 of 52532 relevant lines covered (62.79%)

536.34 hits per line

Coverage Regressions

Lines	Coverage	∆	File
16	0.0	-100.0%	internal/alt/alt.go
2	97.18	-2.82%	iterator/iter/mergeall.go

Jobs

ID	Job ID	Ran	Files	Coverage
1	v1-go-1.25.x - 28055202911.1	23 Jun 2026 08:35PM UTC	498	27.22	GitHub Action Run
2	v1-go-1.24.x - 28055202911.2	23 Jun 2026 08:34PM UTC	498	27.22	GitHub Action Run
3	v1-go-1.21.x - 28055202911.3	23 Jun 2026 08:34PM UTC	456	31.83	GitHub Action Run
4	v1-go-1.26.x - 28055202911.4	23 Jun 2026 08:35PM UTC	498	27.22	GitHub Action Run
5	v1-go-1.22.x - 28055202911.5	23 Jun 2026 08:34PM UTC	498	27.22	GitHub Action Run
6	v2-go-1.24.x - 28055202911.6	23 Jun 2026 08:37PM UTC	881	57.99	GitHub Action Run
7	v2-go-1.26.x - 28055202911.7	23 Jun 2026 08:37PM UTC	881	57.99	GitHub Action Run
8	v1-go-1.23.x - 28055202911.8	23 Jun 2026 08:34PM UTC	498	27.22	GitHub Action Run
9	v2-go-1.25.x - 28055202911.9	23 Jun 2026 08:37PM UTC	881	57.99	GitHub Action Run
10	v1-go-1.20.x - 28055202911.10	23 Jun 2026 08:34PM UTC	456	31.83	GitHub Action Run

IBM / fp-go / 28055202911
63%

README BADGES
x

Markdown

Textile

RDoc

HTML

Rst

Coverage Regressions

Jobs

Source Files on build 28055202911

IBM / fp-go / 28055202911 63%

README BADGES x

Markdown

Textile

RDoc

HTML

Rst

Coverage Regressions

Jobs

Source Files on build 28055202911

IBM / fp-go / 28055202911
63%

README BADGES
x