Mixin used for fast searching for a character in string.
Creates a lookup table to quickly determine if a character
is present in the string. Size of the lookup table is limited;
any characters not represented in the table will be checked
by ordinary equality comparison.
Mixin used for fast searching for a character in string.
Creates a lookup table to quickly determine if a character is present in the string. Size of the lookup table is limited; any characters not represented in the table will be checked by ordinary equality comparison.