Module predicates

Simple predicates for characters.

This module contains some useful functions in order to analize ASCII and Unicode characters.

A lot of predicates already available for char type are not included here, even if they are quite useful.

Structs

AlphabeticTool

Tests if is_alphabetic is true.

AlphanumericTool

Tests if is_alphanumeric is true.

AsciiAlphabeticTool

Tests if is_ascii_alphabetic is true.

AsciiAlphanumericTool

Tests if is_ascii_alphanumeric is true.

AsciiDigitTool

Tests if is_ascii_digit is true.

AsciiTool

Tests if is_ascii is true.

NumericTool

Tests if is_numeric is true.

WhitespaceTool

Tests if is_whitespace is true.

Functions

is_lu_letter

Unicode lowercase/uppercase letter

is_newline

Tests if a character is a newline character (U+000A, \n). Carriage return (U+000D, \r) is not detected by this function because it is usually followed by the newline character.