grammar improvement

[Hossein-Fazel]

Summary by CodeRabbit

• Documentation
  • Clarified guidance on reading command-line arguments using the standard OS package, including argument indexing and program name behavior.
  • Added a step-by-step example demonstrating reading and printing two CLI arguments.
  • Expanded explanations on accessing additional arguments.
  • Applied a minor formatting tweak in Chapter 4.3 with no content change.

[coderabbitai]

Walkthrough

Documentation updates in chapter 4: a formatting-only line replacement in 4.3, and a substantive clarification in 4.6 explaining use of the Go os package for CLI arguments with an added example demonstrating args parsing.

Changes

Cohort / File(s)	Summary
Doc formatting tweak content/chapter 4/4.3-go-mod.md	Single-line textual replacement with no semantic change (formatting only).
CLI args docs update content/chapter 4/4.6-command-line-app.md	Corrected guidance to use the os package and os.Args; added example reading two CLI arguments; clarified indexing (program name at args[0], real args from args[1]).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• ja7ad

Pre-merge checks (2 passed, 1 inconclusive)

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title Check	❓ Inconclusive	The title “grammar improvement” is too vague and does not capture the primary documentation updates in this pull request, which focus on clarifying command-line argument usage in chapter 4.6 and making minor formatting adjustments in chapter 4.3; it uses a non-descriptive term that fails to inform readers of the actual scope of changes.	Please rename the pull request to a concise, specific summary of the key changes, such as “Clarify os.Args usage and add CLI examples in chapter 4.6, with minor formatting fixes in chapter 4.3.”

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

Poem

A bunny taps the keys with glee,
“os.Args? At last, we see!”
From zero starts the program’s name,
Then hop to one—the real game.
Docs are neat, the path made clear,
Carrots up! The CLI’s near. 🥕🐇

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Actionable comments posted: 0

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

content/chapter 4/4.6-command-line-app.md (1)

44-59: Avoid index-out-of-range panic when reading os.Args.

The sample panics if fewer than 2 args are provided. Slice off program name and validate length.

 func main() {
-	args := os.Args
-	fmt.Println("First Argument:", args[1])
-	fmt.Println("Second Argument:", args[2])
+	args := os.Args[1:] // skip program name
+	if len(args) < 2 {
+		fmt.Println("usage: go run main.go <first> <second>")
+		return
+	}
+	fmt.Println("First Argument:", args[0])
+	fmt.Println("Second Argument:", args[1])
 }

Note: If you apply this change, adjust the explanatory paragraph below to reflect that args now starts from the first real argument.

🧹 Nitpick comments (2)

content/chapter 4/4.3-go-mod.md (1)

36-36: Polish the Persian grammar and punctuation for clarity.

Minor edits improve flow and readability.

-پس توجه کنید در اینجا سعی کنید نسخه متناسب با نیاز خود را تعیین کنید هرچند هنگام ایجاد فایل go.mod زبان گو پیش فرض نسخه ای که نصب کرده اید را قرار می دهد.
+پس توجه کنید: در اینجا بهتر است نسخهٔ متناسب با نیاز خود را تعیین کنید؛ هرچند هنگام ایجاد فایل go.mod، زبان گو به‌طور پیش‌فرض نسخه‌ای را که نصب کرده‌اید قرار می‌دهد.

content/chapter 4/4.6-command-line-app.md (1)

44-44: Consistent terminology: prefer “آرگومان(ها)” over “Argument(ها)”.

Keeps the text fully Persian and consistent with the rest of the chapter.

-برای گرفتن ورودی از Command Line به عنوان Argument در یک برنامه Go، می‌توانید از بسته‌ی `os` استفاده کنید. برای دسترسی به Argumentها، می‌توانید از آرایه‌ی `os.Args` کمک بگیرید. این آرایه شامل تمامی Argumentهایی است که در Command Line به برنامه شما داده شده‌اند. در زیر، یک مثال ساده از گرفتن دو Argument از Command Line در یک برنامه Go آورده شده است:
+برای گرفتن ورودی از Command Line به‌عنوان آرگومان در یک برنامه Go، می‌توانید از بستهٔ `os` استفاده کنید. برای دسترسی به آرگومان‌ها، می‌توانید از آرایهٔ `os.Args` کمک بگیرید. این آرایه شامل تمامی آرگومان‌هایی است که در Command Line به برنامهٔ شما داده شده‌اند. در زیر، یک مثال ساده از گرفتن دو آرگومان از Command Line در یک برنامهٔ Go آورده شده است:

📜 Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 207253c and 2c9179b.

📒 Files selected for processing (2)

• content/chapter 4/4.3-go-mod.md (1 hunks)
• content/chapter 4/4.6-command-line-app.md (1 hunks)