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perf: preallocate in Assign #484
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samber
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Jun 30, 2024
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[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/samber/lo](https://togithub.com/samber/lo) | `v1.44.0` -> `v1.45.0` | [![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fsamber%2flo/v1.45.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/go/github.com%2fsamber%2flo/v1.45.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/go/github.com%2fsamber%2flo/v1.44.0/v1.45.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fsamber%2flo/v1.44.0/v1.45.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>samber/lo (github.com/samber/lo)</summary> ### [`v1.45.0`](https://togithub.com/samber/lo/releases/tag/v1.45.0) [Compare Source](https://togithub.com/samber/lo/compare/v1.44.0...v1.45.0) #### What's Changed - perf: preallocate in Assign by [@​pmalek](https://togithub.com/pmalek) in [https://github.com/samber/lo/pull/484](https://togithub.com/samber/lo/pull/484) - feat: adding EarliestBy and LatestBy functions by [@​timych](https://togithub.com/timych) in [https://github.com/samber/lo/pull/489](https://togithub.com/samber/lo/pull/489) #### New Contributors - [@​pmalek](https://togithub.com/pmalek) made their first contribution in [https://github.com/samber/lo/pull/484](https://togithub.com/samber/lo/pull/484) - [@​timych](https://togithub.com/timych) made their first contribution in [https://github.com/samber/lo/pull/489](https://togithub.com/samber/lo/pull/489) **Full Changelog**: samber/lo@v1.44.0...v1.45.0 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "after 11pm every weekday,before 7am every weekday,every weekend" in timezone Europe/Brussels, Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/kairos-io/provider-kairos). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40MjUuMSIsInVwZGF0ZWRJblZlciI6IjM3LjQyNS4xIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/samber/lo](https://togithub.com/samber/lo) | `v1.44.0` -> `v1.46.0` | [![age](https://developer.mend.io/api/mc/badges/age/go/github.com%2fsamber%2flo/v1.46.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/go/github.com%2fsamber%2flo/v1.46.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/go/github.com%2fsamber%2flo/v1.44.0/v1.46.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/go/github.com%2fsamber%2flo/v1.44.0/v1.46.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>samber/lo (github.com/samber/lo)</summary> ### [`v1.46.0`](https://togithub.com/samber/lo/releases/tag/v1.46.0) [Compare Source](https://togithub.com/samber/lo/compare/v1.45.0...v1.46.0) #### What's Changed - fix: chunk memory leak, bug fix by [@​mihir20](https://togithub.com/mihir20) in [https://github.com/samber/lo/pull/491](https://togithub.com/samber/lo/pull/491) - feat: add WaitForWithContext by [@​ccoVeille](https://togithub.com/ccoVeille) in [https://github.com/samber/lo/pull/480](https://togithub.com/samber/lo/pull/480) - add ForEachCondition implement by [@​Sianao](https://togithub.com/Sianao) in [https://github.com/samber/lo/pull/485](https://togithub.com/samber/lo/pull/485) #### New Contributors - [@​mihir20](https://togithub.com/mihir20) made their first contribution in [https://github.com/samber/lo/pull/491](https://togithub.com/samber/lo/pull/491) - [@​ccoVeille](https://togithub.com/ccoVeille) made their first contribution in [https://github.com/samber/lo/pull/480](https://togithub.com/samber/lo/pull/480) - [@​Sianao](https://togithub.com/Sianao) made their first contribution in [https://github.com/samber/lo/pull/485](https://togithub.com/samber/lo/pull/485) **Full Changelog**: samber/lo@v1.45.0...v1.46.0 ### [`v1.45.0`](https://togithub.com/samber/lo/releases/tag/v1.45.0) [Compare Source](https://togithub.com/samber/lo/compare/v1.44.0...v1.45.0) #### What's Changed - perf: preallocate in Assign by [@​pmalek](https://togithub.com/pmalek) in [https://github.com/samber/lo/pull/484](https://togithub.com/samber/lo/pull/484) - feat: adding EarliestBy and LatestBy functions by [@​timych](https://togithub.com/timych) in [https://github.com/samber/lo/pull/489](https://togithub.com/samber/lo/pull/489) #### New Contributors - [@​pmalek](https://togithub.com/pmalek) made their first contribution in [https://github.com/samber/lo/pull/484](https://togithub.com/samber/lo/pull/484) - [@​timych](https://togithub.com/timych) made their first contribution in [https://github.com/samber/lo/pull/489](https://togithub.com/samber/lo/pull/489) **Full Changelog**: samber/lo@v1.44.0...v1.45.0 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector-contrib). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40MzEuNCIsInVwZGF0ZWRJblZlciI6IjM3LjQzMS40IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJkZXBlbmRlbmNpZXMiLCJyZW5vdmF0ZWJvdCJdfQ==--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <[email protected]> Co-authored-by: Yang Song <[email protected]>
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Heuristically preallocate in
Assign
.Assumption is that
Assign
is typically called with maps with different keys. For this invocations the benefit is the greatest.Worst case scenario is when all the keys in all the merged maps are the same. The allocations for those calls are unnecessary but the execution time is roughly the same.
The preallocation factor can be decreased to e.g. half the count of all the entries in all the provided maps to try to cover both mentioned scenarios.