Step-by-Step Explanation: Kotlin Strings

Kotlin strings are designed to be both compatible with Java's String class and much more expressive through built-in language features.

1. Immutability

Just like in Java, Kotlin strings are immutable. Operations like replace() or uppercase() do not modify the original string; they return a brand new one.

2. String Literals

• Escaped Strings: Enclosed in "...". They support standard backslash escapes (e.g., \n, \t).
• Raw Strings: Enclosed in """...""". They preserve newlines and do not support escapes. They are ideal for regex, SQL, or long text blocks.

3. Managing White Space

Raw strings often have leading spaces for alignment in code. Kotlin provides two main tools: - trimIndent(): Removes common leading whitespace. - trimMargin(): Removes everything before a specified character (default is |) on each line.

4. String Templates

This is the most common way to build strings in Kotlin. - $var: Replaces with the variable value. - ${expr}: Evaluates the expression and replaces with the result. To use a literal $ in a template, use ${'$'}.

5. Structural vs. Referential Equality

• ==: Checks for content equality (calls equals()). This is what you almost always want.
• ===: Checks if two references point to the exact same object in memory.

6. String Concatenation

While + works, it can be inefficient in loops. - Use String Templates for simple building. - Use buildString { ... } for complex, multi-step construction.

7. Verification

Verified by building the project. The implementation output confirmed the behavior of raw strings, templates, and the distinction between content and reference equality.