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

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

#!/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

 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

# solution to puzzle https://www.youtube.com/watch?v=LyyHt7NfBxI
# "can you make 24 from 3 3 8 8 using only + - * / ( ) ?"

class Add:
    def __init__(self, a, b):
        self.a, self.b = a, b
    def eval(self):
        return self.a.eval() + self.b.eval()
    def __repr__(self):
        return '({!r} + {!r})'.format(self.a, self.b)

fferri

from spotipy.oauth2 import SpotifyClientCredentials
import spotipy
import json
import urllib
import urllib.request
import urllib.parse
from bs4 import BeautifulSoup
import re
from unidecode import unidecode
import youtube_dl

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def dist(x, y):
    return sum((xi-yi)**2 for xi,yi in zip(x,y))

class KDTree:
    class Node:
        def __init__(self, x, payload=None, axis=0):
            self.x, self.axis, self.payload = x, axis, payload
            self.l, self.r = None, None

        def insert(self, x, payload=None):

fferri

#include <QtCore>

class SignalSpy {
    static QThreadStorage<bool> entered;
    static void signalBegin(QObject *caller, int signalIndex, void **);
    static void slotBegin(QObject *caller, int index, void **);
public:
   static void start();
};

fferri

We couldn’t find that file to show.

fferri

#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>

void exec_with_timeout(char * const *argv, int timeout, int kill_signal = SIGKILL)
{
    pid_t intermediate_pid = fork();
    if(intermediate_pid == 0) {
        pid_t worker_pid = fork();