Functions: String

Kahuna provides the following string manipulation functions, allowing you to work efficiently with text values within your scripts:

Function	Description	Example
`len(str)`	Returns the length of the string `str`	`len("hello")` → `5`
`lower(str)`	Converts `str` to lowercase	`lower("HELLO")` → `"hello"`
`upper(str)`	Converts `str` to uppercase	`upper("hello")` → `"HELLO"`
`trim(str)`	Removes leading and trailing whitespace from `str`	`trim(" hello ")` → `"hello"`
`startsWith(str, prefix)`	Returns `true` if `str` starts with the given `prefix`	`startsWith("abc123", "abc")` → `true`
`endsWith(str, suffix)`	Returns `true` if `str` ends with the given `suffix`	`endsWith("file.txt", ".txt")` → `true`
`contains(str, substr)`	Returns `true` if `substr` is found within `str`	`contains("hello world", "world")` → `true`
`replace(str, from, to)`	Replaces all occurrences of `from` with `to` in `str`	`replace("a-b-c", "-", "_")` → `"a_b_c"`
`split(str, delimiter)`	Splits `str` into an array using `delimiter`	`split("a,b,c", ",")` → `["a", "b", "c"]`
`join(array, delimiter)`	Joins array elements into a string separated by `delimiter`	`join(["a", "b"], "-")` → `"a-b"`
`substring(str, start, end)`	Returns a substring from `start` to `end` (exclusive)	`substring("abcdef", 1, 4)` → `"bcd"`

These functions are useful for formatting values, validating inputs, parsing data, and handling dynamic key names in Kahuna Scripts.