string

Extra string utilities beyond the built-in string methods.

Import

import string

Functions

string.pad_left(s: str, n: int, ch?: str) -> str

Left-pad string to total width n, using ch (default space).

string.pad_right(s: str, n: int, ch?: str) -> str

Right-pad string to total width n.

string.center(s: str, n: int, ch?: str) -> str

Center string in a field of width n.

string.truncate(s: str, n: int, suffix?: str) -> str

Truncate string to total length n, appending suffix if truncated.

string.camel_to_snake(s: str) -> str

Convert helloWorld to hello_world.

string.snake_to_camel(s: str) -> str

Convert hello_world to helloWorld.

string.escape_html(s: str) -> str

Escape HTML special characters (< > & ").

string.is_numeric(s: str) -> bool

True if the string represents a valid number.

string.words(s: str) -> [str]

Split string into words on whitespace.

string.levenshtein(a: str, b: str) -> int

Edit distance between two strings.

string.similarity(a: str, b: str) -> float

Similarity score from 0.0 to 1.0 based on edit distance.

string.repeat(s: str, n: int) -> str

Repeat string n times.

string.chars(s: str) -> [str]

Split string into an array of single characters.

string.bytes(s: str) -> [int]

Convert string to an array of byte values.

Examples

import string

println(string.words("hello world foo"))      -- [hello, world, foo]
println(string.camel_to_snake("helloWorld"))  -- hello_world
println(string.snake_to_camel("hello_world")) -- helloWorld
println(string.levenshtein("kitten", "sitting")) -- 3
println(string.escape_html("<b>hi</b>"))      -- &lt;b&gt;hi&lt;/b&gt;
println(string.is_numeric("3.14"))            -- true
println(string.pad_left("7", 3, "0"))         -- 007
println(string.truncate("hello world", 8, "...")) -- hello...
println(string.repeat("ab", 3))              -- ababab