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GeezerVison is showing github.com — Fix progress calculation divide by zero in Copy-Item by adityapatwardhan · Pull Request #19038 · PowerShell/PowerShell

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@adityapatwardhan

@adityapatwardhan Aditya Patwardhan (adityapatwardhan) commented Jan 27, 2023 •
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PR Summary

Fix issue caused by #18735.

In cases where the file length is 0 bytes, it causes a divide by 0 error. The fix adds a conditional to check for the length and makes percentage as 100% if the total length is 0 bytes.

PR Context

PR Checklist

  • PR has a meaningful title
    • Use the present tense and imperative mood when describing your changes
  • Summarized changes
  • Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
  • This PR is ready to merge and is not Work in Progress.
    • If the PR is work in progress, please add the prefix WIP: or [ WIP ] to the beginning of the title (the WIP bot will keep its status check at Pending while the prefix is present) and remove the prefix when the PR is ready.
  • Breaking changes
    • None
    • OR
    • Experimental feature(s) needed
      • Experimental feature name(s):
  • User-facing changes
    • Not Applicable
    • OR
    • Documentation needed
      • Issue filed:
  • Testing - New and feature
    • N/A or can only be tested interactively
    • OR
    • Make sure you've added a new test if existing tests do not effectively test the code changed
  • Tooling
    • I have considered the user experience from a tooling perspective and don't believe tooling will be impacted.
    • OR
    • I have considered the user experience from a tooling perspective and opened an issue in the relevant tool repository. This may include:
      • Impact on PowerShell Editor Services which is used in the PowerShell extension for VSCode
        (which runs in a different PS Host).
        • Issue filed:
      • Impact on Completions (both in the console and in editors) - one of PowerShell's most powerful features.
        • Issue filed:
      • Impact on PSScriptAnalyzer (which provides linting & formatting in the editor extensions).
        • Issue filed:
      • Impact on EditorSyntax (which provides syntax highlighting with in VSCode, GitHub, and many other editors).
        • Issue filed:

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@adityapatwardhan
Fix progress calculation divide by zero in Copy-Item
60a0427
@adityapatwardhan
Aditya Patwardhan (adityapatwardhan) requested a review from Andrew (anmenaga) as a code owner January 27, 2023 02:30
@pull-request-quantifier-deprecated pull-request-quantifier-deprecated Bot added the Extra Small label Jan 27, 2023
@pull-request-quantifier-deprecated

pull-request-quantifier-deprecated Bot commented Jan 27, 2023

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This PR has 6 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!


Quantification details

Label      : Extra Small
Size       : +5 -1
Percentile : 2.4%

Total files changed: 2

Change summary by file extension:
.cs : +1 -1
.ps1 : +4 -0

Change counts above are quantified counts, based on the PullRequestQuantifier customizations.

Why proper sizing of changes matters

Optimal pull request sizes drive a better predictable PR flow as they strike a
balance between between PR complexity and PR review overhead. PRs within the
optimal size (typical small, or medium sized PRs) mean:

  • Fast and predictable releases to production:
    • Optimal size changes are more likely to be reviewed faster with fewer
      iterations.
    • Similarity in low PR complexity drives similar review times.
  • Review quality is likely higher as complexity is lower:
    • Bugs are more likely to be detected.
    • Code inconsistencies are more likely to be detected.
  • Knowledge sharing is improved within the participants:
    • Small portions can be assimilated better.
  • Better engineering practices are exercised:
    • Solving big problems by dividing them in well contained, smaller problems.
    • Exercising separation of concerns within the code changes.

What can I do to optimize my changes

  • Use the PullRequestQuantifier to quantify your PR accurately
    • Create a context profile for your repo using the context generator
    • Exclude files that are not necessary to be reviewed or do not increase the review complexity. Example: Autogenerated code, docs, project IDE setting files, binaries, etc. Check out the Excluded section from your prquantifier.yaml context profile.
    • Understand your typical change complexity, drive towards the desired complexity by adjusting the label mapping in your prquantifier.yaml context profile.
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      • Your PR could be split in smaller, self-contained PRs instead
      • Your PR only solves one particular issue. (For example, don't refactor and code new features in the same PR).

How to interpret the change counts in git diff output

  • One line was added: +1 -0
  • One line was deleted: +0 -1
  • One line was modified: +1 -1 (git diff doesn't know about modified, it will
    interpret that line like one addition plus one deletion)
  • Change percentiles: Change characteristics (addition, deletion, modification)
    of this PR in relation to all other PRs within the repository.


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@ghost ghost assigned Ilya (iSazonov) Jan 27, 2023
@adityapatwardhan
Aditya Patwardhan (adityapatwardhan) requested a review from Steve Lee (SteveL-MSFT) January 27, 2023 02:30
@adityapatwardhan
Aditya Patwardhan (adityapatwardhan) enabled auto-merge (squash) January 27, 2023 05:27
SteveL-MSFT
Steve Lee (SteveL-MSFT) approved these changes Jan 27, 2023
View reviewed changes
@adityapatwardhan
Aditya Patwardhan (adityapatwardhan) merged commit f8cbf90 into PowerShell:master Jan 27, 2023
@adityapatwardhan Aditya Patwardhan (adityapatwardhan) added the CL-General Indicates that a PR should be marked as a general cmdlet change in the Change Log label Mar 14, 2023
@ghost

Deleted user (ghost) commented Mar 14, 2023

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🎉v7.4.0-preview.2 has been released which incorporates this pull request.:tada:

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@iSazonov Ilya (iSazonov) mentioned this pull request May 29, 2024
Remove-Item throws "Attempted to divide by zero" on PS 7.5.0-preview.3 #23868
Closed
5 tasks done
@jborean93 Jordan Borean (jborean93) mentioned this pull request May 29, 2024
Fix progress calculation on Remove-Item #23869
Merged
8 of 21 tasks
Thatgfsj (Thatgfsj) pushed a commit to Thatgfsj-contribs/PowerShell that referenced this pull request Aug 6, 2026
@adityapatwardhan
Fix progress calculation divide by zero in Copy-Item (PowerShell#19038)
5070a61
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Reviewers

@SteveL-MSFT Steve Lee (SteveL-MSFT) SteveL-MSFT approved these changes
@anmenaga Andrew (anmenaga) Awaiting requested review from anmenaga

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@iSazonov Ilya (iSazonov)

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3 participants

@adityapatwardhan @SteveL-MSFT @iSazonov
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