Data and Math

vtext

Padding, word counts, edit distance and the everyday string checks.

Released v1.0.0 · 2026-09-28

Import

use "stdlib/text.ven"

String operations for everyday text: padding, word counts, title case, palindromes, edit distance and longest common subsequence.

vtext.ven

print pad_left("7", 4, "0")
print levenshtein_distance("kitten", "sitting")

Reference (13 functions)

API reference

Pads s on the left with fill until it reaches width.

pad_left("7", 4, "0")

Pads s on the right with fill until it reaches width.

pad_right("7", 4, "0")

Pads s on both sides with fill until it reaches width.

pad_center("hi", 6, "*")

Counts the minimum single-character edits needed to turn a into b.

levenshtein_distance("kitten", "sitting")

Finds the longest Text that is a subsequence of both a and b.

longest_common_subsequence("ABCBDAB", "BDCABA")

Splits s into whitespace-separated words, collapsing runs of whitespace.

words_of("  a   b  c ")

Counts the whitespace-separated words in s.

word_count("the quick brown fox")

Capitalizes the first letter of every word in s, lowercasing the rest.

title_case("the quick brown fox")

Tests whether s reads the same forwards and backwards.

is_palindrome("A man, a plan, a canal: Panama")

Finds the longest Text that is a prefix of every element of strings.

common_prefix(["flower", "flow", "flight"])

Turns s into a lowercase, hyphen-separated slug.

slugify("Hello, World! 123")

Counts the non-overlapping occurrences of substring in s.

count_occurrences("aaaa", "aa")

Finds every starting index where substring occurs in s.

find_all_indices("aaa", "aa")