git clone --depth 1 https://github.com/cppfastio/fast_io

##</code><code>##

#include <fast_io.h>

//#include <cstdio>

##</code><code>##

clang++ -o llil2vec -std=c++20 -Wall -O3 llil2vec.cpp -I./fast_io/include

##</code><code>##

llil2vec (fixed string length=6) start
get_properties      CPU time : 1.62356 secs
emplace set sort    CPU time : 0.451718 secs
write stdout        CPU time : 0.923496 secs
total               CPU time : 2.99881 secs
total        wall clock time : 3 secs

##</code><code>##

llil2vec (fixed string length=6) start
get_properties      CPU time : 1.50394 secs
emplace set sort    CPU time : 0.430272 secs
write stdout        CPU time : 0.889239 secs
total               CPU time : 2.82348 secs
total        wall clock time : 3 secs