String Prototypes

String values expose text helpers.

let s = "hello world"

println(s.length())
println(s.includes("world"))
println(s.toUpperCase())

Current Literal Limitation

Prototype calls currently work reliably on values stored in variables.

let s = "string"

println(s.length())

Calling prototype methods directly on literals is currently limited by AST/parser behavior.

// Currently may not work:
println("string".length())

Prefer assigning the literal to a variable first.

let text = "string"

println(text.length())

Methods

Method	Returns	Description
length()	int	Returns the byte length of the string.
includes(substr: string)	bool	Checks whether the string contains substr.
indexOf(substr: string)	int	Returns the first index of substr, or -1.
lastIndexOf(substr: string)	int	Returns the last index of substr, or -1.
startsWith(prefix: string)	bool	Checks whether the string starts with prefix.
endsWith(suffix: string)	bool	Checks whether the string ends with suffix.
toUpperCase()	string	Converts the string to uppercase.
toLowerCase()	string	Converts the string to lowercase.
capitalize()	string	Converts the string to title case.
trim()	string	Removes whitespace from both ends.
trimPrefix(prefix: string)	string	Removes prefix from the beginning if present.
trimSuffix(suffix: string)	string	Removes suffix from the end if present.
replace(old: string, new: string, n: int = -1)	string	Replaces occurrences of old with new. -1 means replace all.
split(sep: string = " ")	[]string	Splits the string by sep.
substring(start: int, end: int)	string	Returns a substring.
charAt(index: int)	char	Returns the character at index.
codePointAt(index: int)	int	Returns the Unicode code point at index.
toKebabCase()	string	Converts text to kebab-case.
toCamelCase()	string	Converts text to lower camelCase.
toSnakeCase()	string	Converts text to snake_case.

Searching

let name = "nubo language"

println(name.length())
println(name.includes("language"))
println(name.indexOf("language"))
println(name.startsWith("nubo"))
println(name.endsWith("language"))

Trimming and Case

let text = "  Hello Nubo  "

println(text.trim())
println(text.toLowerCase())
println(text.toUpperCase())
println(text.capitalize())

Case Conversion

let title = "Nubo Language"

println(title.toKebabCase())
println(title.toCamelCase())
println(title.toSnakeCase())

Splitting

let csv = "red,green,blue"
let colors = csv.split(",")

println(colors)

Characters

let text = "hello"

println(text.charAt(1))
println(text.codePointAt(1))

Indexed Access

Strings also support indexed access through the internal __get__ prototype.

let text = "hello"

println(text[1])

This behaves like charAt.