Add name field and modify output for better understanding#391
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WalkthroughAdds a name field to Rectangle and Circle structs and updates initialization and print formatting to include shape names and two-decimal outputs. Shape interface and Area/Perimeter methods remain unchanged. Iteration logic stays the same. Changes are contained within the documented example in one markdown file. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes Poem
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Actionable comments posted: 1
🧹 Nitpick comments (4)
content/chapter 4/oop/4.23.5-abstraction.md (4)
33-35: Fix MD010: replace hard tabs with spaces in the code fence.Markdownlint flags leading tabs here; switch to spaces to satisfy MD010 and keep formatting consistent.
- name string - width float64 - height float64 + name string + width float64 + height float64
50-50: Fix MD010 on Circle field line.Replace the leading tab with spaces to pass markdownlint.
- name string + name string
66-67: Use spaces instead of tabs; minor readability nit.Also, keyed composite literals look good for clarity.
- r := Rectangle{name: "Rectangle", width: 10, height: 20} - c := Circle{name: "Circle", radius: 5} + r := Rectangle{name: "Rectangle", width: 10, height: 20} + c := Circle{name: "Circle", radius: 5}
74-75: Make printed output clearer.Today %v prints the whole struct without field names. Either:
- Quick win: use %+v to include field names, or
- Better: implement fmt.Stringer on Rectangle/Circle to print only the shape name.
- fmt.Printf("Area of shape %v is: %.2f\n", shape, shape.Area()) - fmt.Printf("Perimeter of shape %v is: %.2f\n", shape, shape.Perimeter()) + fmt.Printf("Area of shape %+v is: %.2f\n", shape, shape.Area()) + fmt.Printf("Perimeter of shape %+v is: %.2f\n", shape, shape.Perimeter())Alternatively, add Stringer methods (no changes needed to the print lines if you do this):
func (r Rectangle) String() string { return r.name } func (c Circle) String() string { return c.name }
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📒 Files selected for processing (1)
content/chapter 4/oop/4.23.5-abstraction.md(3 hunks)
🧰 Additional context used
🪛 markdownlint-cli2 (0.17.2)
content/chapter 4/oop/4.23.5-abstraction.md
33-33: Hard tabs
Column: 1
(MD010, no-hard-tabs)
34-34: Hard tabs
Column: 1
(MD010, no-hard-tabs)
35-35: Hard tabs
Column: 1
(MD010, no-hard-tabs)
50-50: Hard tabs
Column: 1
(MD010, no-hard-tabs)
66-66: Hard tabs
Column: 1
(MD010, no-hard-tabs)
67-67: Hard tabs
Column: 1
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69-69: Hard tabs
Column: 1
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70-70: Hard tabs
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72-72: Hard tabs
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73-73: Hard tabs
Column: 1
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74-74: Hard tabs
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75-75: Hard tabs
Column: 1
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| name string | ||
| width float64 | ||
| height float64 |
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💡 Verification agent
🧩 Analysis chain
Verify markdownlint passes after whitespace fixes.
Run markdownlint to confirm MD010 is resolved for this file.
Also applies to: 50-50, 66-67, 74-75
🏁 Script executed:
#!/bin/bash
# Check MD010 (no hard tabs) on the modified file
npx -y markdownlint-cli2 'content/chapter 4/oop/4.23.5-abstraction.md' || trueLength of output: 2831
Fix markdownlint errors in content/chapter 4/oop/4.23.5-abstraction.md
Lint still reports 27 errors—remove all hard tabs (MD010), correct spaces inside emphasis markers (MD037), and ensure the file ends with exactly one newline (MD047).
🧰 Tools
🪛 markdownlint-cli2 (0.17.2)
33-33: Hard tabs
Column: 1
(MD010, no-hard-tabs)
34-34: Hard tabs
Column: 1
(MD010, no-hard-tabs)
35-35: Hard tabs
Column: 1
(MD010, no-hard-tabs)
🤖 Prompt for AI Agents
In content/chapter 4/oop/4.23.5-abstraction.md around lines 33-35, the file
currently triggers markdownlint errors MD010, MD037 and MD047; remove all hard
tabs by replacing them with spaces (use consistent indentation, e.g., 2 or 4
spaces), fix any emphasis markers that have unwanted spaces inside them (change
patterns like "* text *" or "_ text _" to "*text*" or "_text_" so there are no
spaces directly inside the markers), and ensure the file ends with exactly one
newline character (no extra blank lines). Run markdownlint to verify MD010,
MD037, and MD047 are cleared.
2 participants
Add name field and modify output for better understanding in abstraction section.
Summary by CodeRabbit
New Features
Documentation