Case conversion

StringKit-FP converts code-like identifiers using an ASCII/byte-oriented tokenizer. It recognises separators, a lower-to-upper transition, and a common acronym boundary. It does not segment Unicode grapheme clusters.

Input	`ToSnakeCase`
`HelloWorld`	`hello_world`
`XMLHttpRequest`	`xml_http_request`
`HTTPRequest`	`http_request`
`HTML5Parser`	`html5_parser`
`IPv6Address`	`ipv6_address`
`hello_world`	`hello_world`
`hello-world`	`hello_world`
`hello world`	`hello_world`

Available converters#

Function	Example result for `hello world`
`ToCamelCase`	`helloWorld`
`ToPascalCase`	`HelloWorld`
`ToSnakeCase`	`hello_world`
`ToKebabCase`	`hello-world`
`ToTitleCase`	`Hello World`

Digits stay with the current token. An uppercase word after digits begins a new token, so HTML5Parser becomes html5_parser. Use the compiled identifier recipes program as the starting point.