The StringTools package is a collection of optimized string manipulation utilities.

Each command in the StringTools package can be accessed by using either the long form or the short form of the command name in the command calling sequence.

The long form, StringTools:-command, is always available.  The short form can be used after loading the package.

The following is a list of available commands.

Case Conversions

Character Class Tests

Combinatorics on Words

Comparisons

Constructors

Date and Time Procedures

Encodings

Metrics and Distances

Routines for Manipulating English Text

Filter Operations

Iterators

List Conversions

Pattern Matching and Text Searching

Random Strings

String Sorting

String Homology

Statistics

Transformations

Whitespace Handling Procedures

Miscellaneous Routines

The commands in the StringTools package accept symbols in place of strings, whenever possible. However, values returned by commands in the StringTools package are always of type string (rather than symbol), even when the input is a symbol. (Some StringTools procedures return other kinds of values, such as numerics, or other data structures like lists, however.)

Note that, for portability, all collation and character class tests and conversions are performed in the C (POSIX) locale. For definitions of the various character classes recognized by the package, see the corresponding character class test help page (for example, StringTools[IsLower]).

To display the help page for a particular StringTools commands, see Getting Help with a Command in a Package.

All of the StringTools package commands treat strings as (null-terminated) sequences of $8$-bit (ASCII) characters.  Thus, there is no support for multibyte character encodings, such as unicode encodings.

The PatternDictionary subpackage provides facilities for managing this list of patterns.