SAORI
calc†
calc_float†
unless†
iflist†
switch†
nswitch†
substr†
split†
replace†
replace_first†
erase†
erase_first†
count†
compare†
compare_head†
compare_tail†
compare_case†
compare_head_case†
compare_tail_case†
length†
sprintf†
is_empty†
is_digit†
is_alpha†
zen2han†
han2zen†
kata2hira†
hira2kata†
join†
choice†
reverse†
lsimg†
mkdir†