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This library exists to provide case conversion between common cases likeCamelCase and snake_case. It is intended to be unicode aware, internallyconsistent, and reasonably well performing.

Word boundaries are defined by non-alphanumeric characters, as well aswithin those words in this manner:

1. If an uppercase character is followed by lowercase letters, a wordboundary is considered to be just prior to that uppercase character.
2. If multiple uppercase characters are consecutive, they are considered tobe within a single word, except that the last will be part of the next wordif it is followed by lowercase characters (see rule 1).

That is, "HelloWorld" is segmentedHello|World whereas "XMLHttpRequest" issegmentedXML|Http|Request.

Characters not within words (such as spaces, punctuations, and underscores)are not included in the output string except as they are a part of the casebeing converted to. Multiple adjacent word boundaries (such as a series ofunderscores) are folded into one. ("hello__world" in snake case is therefore"hello_world", not the exact same string). Leading or trailing word boundaryindicators are dropped, except insofar as CamelCase capitalizes the first word.

1. UpperCamelCase
2. lowerCamelCase
3. snake_case
4. kebab-case
5. SHOUTY_SNAKE_CASE
6. Title Case
7. SHOUTY-KEBAB-CASE
8. Train-Case

The minimum supported Rust version for this crate is 1.56.0. This may change inminor or patch releases, but we probably won't ever require a very recentversion. If you would like to have a stronger guarantee than that, please openan issue.

heck is distributed under the terms of both the MIT license and theApache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.