Improve arrays chapter

[bobbyiliev]

What type of PR is this? (check all applicable)

• ♻️ Refactor
• ✨ Feature
• 🐛 Bug Fix
• 👷 Optimization
• 📝 Documentation Update
• 🚩 Other

Description

Bug: Substring in Bash :: Slicing - Examples incorrect

Related Tickets & Documents

Fixes #153

Added to documentation?

• 📜 readme
• 🙅 no documentation needed

[what-the-diff]

PR Summary

• Book Updated
  The book version has been updated from Oct 30, 2023 to Feb 8, 2024.

• Bash Arrays: Examples & Explanations

  • Introduced the correct way to return all elements in the array instead of default arguments.
  • Added guidance on array slicing, indexing, and slicing strings for diverse range of results.
  • Enhanced examples of array element printing, both in regards to individual and range of elements.
  • Emphasized the importance of using [@] when referring to all array elements, alongside the benefits of enclosing parameter expansion in quotes to keep any spaces present within specific array elements.

• Array Slicing: Expanded Information

  • Broadened scope on array slicing knowledge, detailing functionality in according with Bash 4.0 syntax, individual element accessing, and range of elements.
  • Elucidated how both array indexing and string slicing methods can be utilised to achieve array slicing-esque outcomes.

• String Slicing: Theory and Practice

  • Expanded theoretical understanding of string slicing in Bash.
  • Revamped examples of extracting string portions using slicing.
  • Clarified the role of the second number in slice notation, explaining it defines the maximum extracted substring length instead of dictating the ending index.
  • Included practical examples of string sections extraction, detailing obtaining the available string characters when the desired count exceeds the string length.