marc-x-andre

from typing import Dict


class EventEmitter:

    def __init__(self):
        self._callbacks: Dict[str, callable] = {}

    def on(self, event_name, function):
        self._callbacks[event_name] = self._callbacks.get(event_name, []) + [function]

fjahr

Moved to https://github.com/fjahr/debugging_bitcoin to allow for better collaboration.

This document is currently optimized for MacOS. If you would like to help me add Linux equivalent commands, please let me know.

Debugging Bitcoin Core

This guide is designed to give beginners of C++ development and/or people new to the bitcoin core code base an overview of the tools available for debugging issues as well as giving hints where issues may trip you up.

raulk

research doc: usable stream closure in libp2p

libp2p streams are full-duplex. Each party can read and write simultaneously on the conduit, and the underlying transport guarantees (or not) delivery, while the multiplexer also participates in congestion control. Yamux, for example, applies stream-scoped congestion control to curtail head-of-line blocking in some circumstances. Mplex is more simplistic and relies purely on TCP congestion control.

There's an active debate in go-libp2p to rethink the single Close() method

qoomon

Conventional Commit Messages

See how a minor change to your commit message style can make a difference.

Tip

Have a look at git-conventional-commits , a CLI util to ensure these conventions and generate verion and changelogs

Commit Message Formats

Default

mauri870

After a weekend of research, stress and pain I finally figure out how to install manjaro 17 and configure the nvidia/bumblebee drivers on my avell laptop

Here's my notebook specs:

$ inxi -MGCNA

Machine:   Device: laptop System: Avell High Performance product: 1513
           Mobo: N/A model: N/A v: 0.1 UEFI: American Megatrends v: N.1.02 date: 09/28/2016
Battery    BAT0: charge: 44.0 Wh 100.0% condition: 44.0/44.0 Wh (100%)

whizzzkid

# Instructions for 4.14 and cuda 9.1
# If upgrading from 4.13 and cuda 9.0
$ sudo apt-get purge --auto-remove libcud*
$ sudo apt-get purge --auto-remove cuda*
$ sudo apt-get purge --auto-remove nvidia*
# also remove the container directory direcotory at /usr/local/cuda-9.0/

# Important libs required with 4.14.x with Cuda 9.X
$ sudo apt install libelf1 libelf-dev

Davor111

#It's not directly mentioned in the documentation on how to do this, so here you go. This command will tunnel everything including DNS:
sshuttle --dns -vr user@yourserver.com 0/0 --ssh-cmd 'ssh -i /your/key/path.pem'

destan

import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;

schickling

docker-machine import/export

Script to import and export docker-machine configurations to sync between hosts/collaborators

Export (on host A)

$ docker-machine ls
NAME       ACTIVE   DRIVER         STATE     URL                            SWARM   DOCKER    ERRORS
dev        -        digitalocean   Running   tcp://example.com:2376                 v1.10.1

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE