fferri

 correct_position(A, B, C, S) :- S = [A, _, _], \+ member(B, S), \+ member(C, S).
 correct_position(A, B, C, S) :- S = [_, B, _], \+ member(A, S), \+ member(C, S).
 correct_position(A, B, C, S) :- S = [_, _, C], \+ member(A, S), \+ member(B, S).

 wrong_position(A, B, C, S) :- (S = [_, A, _] ; S = [_, _, A]), \+ member(B, S), \+ member(C, S).
 wrong_position(A, B, C, S) :- (S = [B, _, _] ; S = [_, _, B]), \+ member(A, S), \+ member(C, S).
 wrong_position(A, B, C, S) :- (S = [C, _, _] ; S = [_, C, _]), \+ member(A, S), \+ member(B, S).

 two_wrong_position(A, B, C, S)  :- S \= [A, _, _], S \= [_, B, _], member(A, S), member(B, S), \+ member(C, S).
 two_wrong_position(A, B, C, S)  :- S \= [A, _, _], S \= [_, _, C], member(A, S), member(C, S), \+ member(B, S).

fferri

#!/usr/bin/env python3
market, period = 'XBTEUR', 60
imgw, imgh = 22, 22
import krakenex
from pykrakenapi import KrakenAPI
api = krakenex.API()
k = KrakenAPI(api)
ohlc, last = k.get_ohlc_data(market, period)
a = ohlc.to_numpy()
a = a[:imgw,:]

fferri

Since communication over ROS2 across WSL2 border doesn't work out of the box, here's my notes for getting it to work.

Make sure to select cyclonedds RMW on both ends:

(Linux)

export RMW_IMPLEMENTATION=rmw_cyclonedds_cpp

(Windows)

fferri

Pure-data development on macOS

A few tips for pd development on macOS:

Enable get-task-allow for debugging in lldb

Pd.app is not enabled for debugging, thus the app needs to be re-signed with the get-task-allow entitlement enabled:

1. obtain the current entitlements with:

fferri

#include <string>
#include <vector>
#include <map>
#include <cmath>
#include <random>
#include <chrono>
#include <iostream>

#include <Eigen/Geometry>

fferri

Integration of luarocks with macOS apps

Apps embedding lua won't find your luarocks installation out-of-the box.

In a terminal, you have to run:

eval $(luarocks path --lua-version 5.4 --bin)