The unicode library

The unicode library in Pipefish wraps around the standard unicode library in Go. As usual, the function names have been converted from PascalCase to camelCase.

Besides that:

• The To function has been renamed toCase, and takes an enum of type Case as its first parameter.

• The In and Is and IsOneOf functions have been amalgamated into single function isIn which as its second parameter takes a varargs of pairs specifying lower and upper bounds, e.g. unicode.isIn r, 64::91, 97::123 wil test if the rune r is in the alphabetical part of ASCII. As always, ranges include the smaller value and exclude the larger.

The API of the library therefore consists of the Case type:

Case = enum UPPER_CASE, LOWER_CASE, TITLE_CASE, MAX_CASE

... and a collection of functions with signatures as follows:

• isControl(r rune) -> bool
• isDigit(r rune) -> bool
• isGraphic(r rune) -> bool
• isIn(r rune, bounds ... pair) -> bool
• isLetter(r rune) -> bool
• isLower(r rune) -> bool
• isMark(r rune) -> bool
• isNumber(r rune) -> bool
• isPrint(r rune) -> bool
• isPunct(r rune) -> bool
• isSpace(r rune) -> bool
• isSymbol(r rune) -> bool
• isTitle(r rune) -> bool
• isUpper(r rune) -> bool
• simpleFold(r rune) -> rune
• toCase(c Case, r rune) -> rune
• toLower(r rune) -> rune
• toTitle(r rune) -> rune
• toUpper(r rune) -> rune