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String Methods

This content is for v0.7. Switch to the latest version for up-to-date documentation.

Method Reference

Method	Description
`length()`	Get character count (Unicode-aware)
`uppercase()`	Convert to uppercase
`lowercase()`	Convert to lowercase
`substring(start, end)`	Extract substring [start, end)
`split(delimiter)`	Split into array by delimiter
`contains(str)`	Check if contains substring
`trim()`	Remove leading/trailing whitespace
`replace(old, new)`	Replace all occurrences
`starts_with(prefix)`	Check if starts with prefix
`ends_with(suffix)`	Check if ends with suffix
`iter()`	Create iterator over characters

Examples

let s = "Hello World";

// Case conversion
s.uppercase();                 // "HELLO WORLD"
s.lowercase();                 // "hello world"

// Inspection
s.length();                    // 11
s.contains("World");           // true
s.starts_with("Hello");        // true
s.ends_with("World");          // true

// Transformation
s.substring(0, 5);             // "Hello"
s.split(" ");                  // #["Hello", "World"]
s.replace("World", "Resonon"); // "Hello Resonon"

// Whitespace handling
let padded = "  text  ";
padded.trim();                 // "text"

// Iterator
"hello".iter().take(3).collect();              // ["h", "e", "l"]
"hello".iter().filter(fn(c) { return c != "l"; }).collect();  // ["h", "e", "o"]

See Also

Strings - String basics
Iterator Methods - Full iterator API available via .iter()