cdi_ohe is command line one-hot encoder written in Crystal. Input values should be passed to the STDIN and encoding keys as arguments. The encoded output is sent to STDOUT

Build with shards build and copy the resulting binary to a location in your PATH.

You can download a compiled binary for x86_64 from the releases page:

https://github.com/plainas/cdi_ohe/releases

I do not plan to make further releases for this or any other architecture.

$ cat testfile 
a
b
a
b
c
c
p
q

$ cat testfile | ./cdi_ohe a b c
1 0 0
0 1 0
1 0 0
0 1 0
0 0 1
0 0 1
0 0 0
0 0 0

This program source is 20 lines of code and it was written in a few minutes. I do not plan to add more functionality. The recomended way of contributing is by cloning the project and modifying it as needed.