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2022-05-02 comparers #2401

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The Maintainability Monday post for 2022-05-02 about comparers

@pull-request-quantifier-deprecated

This PR has 62 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!


Quantification details

Label      : Small
Size       : +62 -0
Percentile : 24.8%

Total files changed: 1

Change summary by file extension:
.md : +62 -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 detetcted.
  • 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.
    • Only use the labels that matter to you, see context specification to customize your prquantifier.yaml context profile.
  • Change your engineering behaviors
    • For PRs that fall outside of the desired spectrum, review the details and check if:
      • 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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@xuzhg
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xuzhg commented May 12, 2022

@corranrogue9 @mikepizzo That's cool to post it. But, do you think odata.net is the right place to have such posts?

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Today's topic is about the standard implementations for the different ways to compare instances of a type. There are 7 interfaces in .NET that are used for this: `IEqualityComparer`, `IEqualityComparer<T>`, `IComparer`, `IComparer<T>`, `Comparable`, `IComparable<T>`, and `IEquatable<T>`. Notice the missing, non-generic IEquatable variant. This is because `object` already has those methods that can be overridden by any derived type. Let's now look at the standard implementations:
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Shall we have a title?
and maybe change 'Today's topic' as "This post' or "This doc" ...


1. `IEqualityComparer`

```
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habbes commented Jun 2, 2022

Since this post is not specific to this repo, maybe it would make sense to have a dedicated repo for such docs? Or blog posts?

@@ -0,0 +1,149 @@
Today's topic is about the standard implementations for the different ways to compare instances of a type. There are 7 interfaces in .NET that are used for this: `IEqualityComparer`, `IEqualityComparer<T>`, `IComparer`, `IComparer<T>`, `Comparable`, `IComparable<T>`, and `IEquatable<T>`. Notice the missing, non-generic IEquatable variant. This is because `object` already has those methods that can be overridden by any derived type. Let's now look at the standard implementations:
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@habbes habbes Jun 7, 2022

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Is the date necessary to have in the filename. Should this be regarded as blog post series or time-agnostic docs?

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