Add docs for Dart .removeFirst()

[abdultalha0862]

Description

Added Dart removeFirst() Function Documentation

Issue Solved

#8146

Type of Change

• Adding a new entry

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[abdultalha0862]

@mamtawardhani I have solved this issue #8146

Ready for the Review. Please let me know if there are any changes.

[Copilot]

Pull request overview

This PR adds documentation for the Dart .removeFirst() method for the Queue data structure, addressing issue #8146. The entry follows the standard Codecademy Docs term entry format with metadata, introduction, syntax, and example sections.

Changes:

• Added new documentation file for Dart Queue's .removeFirst() method
• Includes syntax specification showing the method returns type E
• Provides a working code example demonstrating removal of the first queue element

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[Copilot]

The documentation is missing critical information about error handling. The .removeFirst() method throws a StateError when called on an empty queue. This should be documented, similar to how other methods like .removeAt() document their constraints. Consider adding a note after the syntax section explaining that calling this method on an empty queue will throw a StateError, and optionally provide an example or warning about checking if the queue is empty before calling this method.

[Copilot]

The phrase "if it exists" in the introduction is misleading. The .removeFirst() method does not check if an element exists before removing it - it will throw a StateError if the queue is empty. Consider removing "if it exists" from this sentence or rephrasing to clarify the actual behavior, such as: "The .removeFirst() method in Dart removes and returns the first element from a queue."

Suggested change

	The **`.removeFirst()`** method in Dart is used to remove and return the first element from a queue if it exists.
	The **`.removeFirst()`** method in Dart is used to remove and return the first element from a queue.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

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