String Functions

Functions for string manipulation. All string functions are non-mutating and return new strings.

split(string, delimiter) -> array

Splits a string by the given delimiter.

split("a,b,c", ",")     // ["a", "b", "c"]
split("hello world", " ") // ["hello", "world"]

Joins array elements into a string with an optional separator. Default separator is empty string.

join(["a", "b", "c"], ", ")  // "a, b, c"
join(["x", "y", "z"])        // "xyz"

Replaces all occurrences of from with to.

replace("hello world", "world", "Forge")  // "hello Forge"
replace("aabbcc", "bb", "XX")             // "aaXXcc"

Returns true if string begins with prefix.

starts_with("hello", "hel")   // true
starts_with("hello", "world") // false

Returns true if string ends with suffix.

ends_with("hello.fg", ".fg")  // true
ends_with("hello.fg", ".rs")  // false

Splits a string into an array of lines.

lines("first\nsecond\nthird")
// ["first", "second", "third"]

Extracts a substring from start (inclusive) to end (exclusive). If end is omitted, extracts to the end of the string.

substring("hello world", 0, 5)   // "hello"
substring("hello world", 6)      // "world"

Returns the index of the first occurrence of search in string, or -1 if not found.

index_of("hello world", "world")  // 6
index_of("hello world", "xyz")    // -1

Returns the index of the last occurrence of search in string, or -1 if not found.

last_index_of("abcabc", "abc")  // 3
last_index_of("hello", "xyz")   // -1

Pads the beginning of a string to reach the target length. Default pad character is a space.

pad_start("42", 5, "0")    // "00042"
pad_start("hi", 10)        // "        hi"

Pads the end of a string to reach the target length. Default pad character is a space.

pad_end("hi", 10, ".")     // "hi........"
pad_end("test", 8)         // "test    "

Returns the string with the first character in uppercase.

capitalize("hello")  // "Hello"
capitalize("HELLO")  // "HELLO"

Returns the string with the first character of each word capitalized.

title("hello world")        // "Hello World"
title("the quick brown fox") // "The Quick Brown Fox"

Returns the string repeated count times.

repeat_str("ha", 3)    // "hahaha"
repeat_str("-", 20)    // "--------------------"

Counts the number of non-overlapping occurrences of substring in string.

count("banana", "an")   // 2
count("hello", "l")     // 2

Converts a string to a URL-friendly slug: lowercase, non-alphanumeric characters replaced with hyphens.

slugify("Hello World!")           // "hello-world"
slugify("The Quick Brown Fox")    // "the-quick-brown-fox"

Converts a string to snake_case. Handles camelCase, PascalCase, and spaces.

snake_case("helloWorld")     // "hello_world"
snake_case("MyComponent")    // "my_component"
snake_case("some string")    // "some_string"

Converts a string to camelCase.

camel_case("hello_world")    // "helloWorld"
camel_case("some string")    // "someString"