Working with Strings
Strings are sequences of characters used for names, messages, URLs, and user-facing text. In Swift, string handling is one of the most common daily tasks.
Common Operations
- Concatenation — combine strings together
- Interpolation — embed variables inside strings
- Length — count characters
- Search — find substrings or check contains
- Transform — uppercase, lowercase, trim whitespace
SWIFT
// String operations in swiftTip: Always validate and sanitize user input strings before displaying in HTML to prevent XSS.
Frequently Asked Questions
How do I check if a string is empty in Swift?+
Compare length to zero or check for empty string after trimming whitespace. Never rely on truthy checks alone across languages.