regx

var C_D regx = `\D` // Matches any non-digit character.

var C_S regx = `\S` // Matches any non-whitespace character.

var C_W regx = `\W` // Matches any non-word character.

var C_alnum regx = `[:alnum:]`

var C_alpha regx = `[:alpha:]`

var C_blank regx = `[:blank:]`

var C_cntrl regx = `[:cntrl:]`

var C_d regx = `\d` // Matches any digit (0-9).

var C_digit regx = `[:digit:]`

var C_graph regx = `[:graph:]`

var C_hexad regx = `[:xdigit:]`

var C_lower regx = `[:lower:]`

var C_print regx = `[:print:]`

var C_punct regx = `[:punct:]`

var C_s regx = `\s` // Matches any whitespace character (space, tab, newline, etc.).

var C_space regx = `[:space:]`

var C_upper regx = `[:upper:]`

var C_w regx = `\w` // Matches any alphanumeric character plus "_" (word character).