--- schema_version: "1" id: 8a83669b0d415f726c5c94fe2b0aae6ae3e9f14cdd09f9a1a40e972b222b776a title: Strings (dw::core::Strings) collection: mulesoft version: current locale: en-us portal_url: https://docs.salesforce.com/mulesoft/current/en-us/dataweave/latest/dw-strings.md canonical_url: https://docs.mulesoft.com/dataweave/latest/dw-strings source_site: docs.mulesoft.com content_type: documentation content_hash: 61cfbed0aef23911e6f2e4ac27ea48f6d9ac208b0951e05a1c528dd231a92de0 description: MuleSoft Documentation Site release: "2.13" latest: true --- --- product: DataWeave version: 2.13 is-latest-version: true --- # Strings (dw::core::Strings) > For the full documentation index, see: https://docs.mulesoft.com/llms.txt This module contains helper functions for working with strings. To use this module, you must import it to your DataWeave code, for example, by adding the line `import * from dw::core::Strings` to the header of your DataWeave script. ## Functions

Name	Description
appendIfMissing	Appends the `suffix` to the end of the `text` if the `text` does not already ends with the `suffix`.
camelize	Returns a string in camel case based on underscores in the string.
capitalize	Capitalizes the first letter of each word in a string.
charCode	Returns the Unicode for the first character in an input string.
charCodeAt	Returns the Unicode for a character at the specified index.
collapse	Collapses the string into substrings of equal characters.
countCharactersBy	Counts the number of times an expression that iterates through each character in a string returns `true`.
countMatches	Counts the number of matches in a string.
dasherize	Replaces spaces, underscores, and camel-casing in a string with dashes (hyphens).
everyCharacter	Checks whether a condition is valid for every character in a string.
first	Returns characters from the beginning of a string to the specified number of characters in the string, for example, the first two characters of a string.
fromCharCode	Returns a character that matches the specified Unicode.
hammingDistance	Returns the Hamming distance between two strings.
isAlpha	Checks if the `text` contains only Unicode digits. A decimal point is not a Unicode digit and returns `false`.
isAlphanumeric	Checks if the `text` contains only Unicode letters or digits.
isLowerCase	Checks if the `text` contains only lowercase characters.
isNumeric	Checks if the `text` contains only Unicode digits.
isUpperCase	Checks if the `text` contains only uppercase characters.
isWhitespace	Checks if the `text` contains only whitespace.
last	Returns characters from the end of string to a specified number of characters, for example, the last two characters of a string.
leftPad	The specified `text` is left-padded to the `size` using the `padText`. By default `padText` is `" "`.
levenshteinDistance	Returns the Levenshtein distance (or edit distance) between two strings.
lines	Returns an array of lines from a string.
mapString	Applies an expression to every character of a string.
ordinalize	Returns a number as an ordinal, such as `1st` or `2nd`.
pluralize	Pluralizes a singular string.
prependIfMissing	Prepends the `prefix` to the beginning of the string if the `text` does not already start with that prefix.
remove	Removes all occurrences of a specified pattern from a string.
repeat	Repeats a `text` the number of specified `times`.
replaceAll	Replaces all substrings that match a literal search string with a specified replacement string.
reverse	Reverses sequence of characters in a string.
rightPad	The specified `text` is right-padded to the `size` using the `padText`. By default `padText` is `" "`.
singularize	Converts a plural string to its singular form.
someCharacter	Checks whether a condition is valid for at least one of the characters or blank spaces in a string.
substring	Returns a substring that spans from the character at the specified `from` index to the last character before the `until` index.
substringAfter	Gets the substring after the first occurrence of a separator. The separator is not returned.
substringAfterLast	Gets the substring after the last occurrence of a separator. The separator is not returned.
substringBefore	Gets the substring before the first occurrence of a separator. The separator is not returned.
substringBeforeLast	Gets the substring before the last occurrence of a separator. The separator is not returned.
substringBy	Splits a string at each character where the `predicate` expression returns `true`.
substringEvery	Splits a string into an array of substrings equal to a specified length.
underscore	Replaces hyphens, spaces, and camel-casing in a string with underscores.
unwrap	Unwraps a given `text` from a `wrapper` text.
withMaxSize	Checks that the string length is no larger than the specified `maxLength`. If the string’s length is larger than the `maxLength`, the function cuts characters from left to right, until the string length meets the length limit.
words	Returns an array of words from a string.
wrapIfMissing	Wraps `text` with `wrapper` if that `wrapper` is missing from the start or end of the given string.
wrapWith	Wraps the specified `text` with the given `wrapper`.