miracle2k

"""
Inspired by this approach:

- https://twitter.com/zzzeek/status/1279069782533386247
- https://gist.github.com/zzzeek/2a8d94b03e46b8676a063a32f78140f1
- https://gist.github.com/zzzeek/33943060f7a08cf9e82bf8df1f0f75de, https://gist.github.com/zzzeek/4e89ce6226826e7a8df13e1b573ad354#file-asyncio_plus_greenlet-py-L28

Essentially we use greenlets to make the IO layer async and the top layer uses async/await, but everything in
between can be regular sync code.

enixdark

from time import sleep
import signal
import sys


def on_stop_handler(signum, frame):
    print 'Exiting application...'
    sys.exit(0)

pinheadmz

## PREHEAD
----------

nonce (4 bytes)                    
 |
 |   timestamp (8 bytes)
 |    |
 |    |       padding (20 bytes)   prevBlock (32 bytes)             treeRoot(32 bytes)               commitHash(32 bytes)
⚀⚀⚀⚀ ⚀⚀⚀⚀⚀⚀⚀⚀ ⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀ ⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀ ⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀ ⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀⚀

asyd

class ComponentCommit(db.Model):
    __tablename__ = 'component_version'
    __table_args__ = (
        db.UniqueConstraint('component_id', 'commit_id', name='unique_component_commit'),
    )
    id = db.Column(db.Integer, primary_key=True)
    component_id = db.Column(db.Integer, db.ForeignKey("component.id"))
    commit_id = db.Column(db.String)
    branch = db.Column(db.String)
    dependencies = db.Column(db.Text)

vanpelt

from app import db
from sqlalchemy import func
from sqlalchemy.dialects.mysql import insert

def upsert(model, insert_dict):
    """model can be a db.Model or a table(), insert_dict should contain a primary or unique key."""
    inserted = insert(model).values(**insert_dict)
    upserted = inserted.on_duplicate_key_update(
        id=func.LAST_INSERT_ID(model.id), **{k: inserted.inserted[k]
                               for k, v in insert_dict.items()})

andreafspeziale

Operating Ropsten Ethereum testnet

from a newbie to newbies

Intro

I believe that a development environment is one of the access key in learning new technologies. I didn't find on the internet a simple and common path to make the Ropsten network, the Ethereum public testnet, work.

So I'm writing down a couple of command lines and links that can be useful to achieve it.

Resources and requirements

ChristopherJohnston

from hashlib import sha256
import time
import struct
import binascii
import datetime

VERSION = 1

def hexify(value, type):
    return binascii.hexlify(struct.Struct(type).pack(value))

YihaoPeng

Stratum挖矿协议： 该协议是由SlushPool制定的，请参阅其官方文档：https://slushpool.com/help/manual/stratum-protocol

以下所有报文均使用\n做为行结束符。

---

矿机订阅：

{"id": 1, "method": "mining.subscribe", "params": []}

fotock

# 生成 dhparam.pem 文件, 在命令行执行任一方法:

# 方法1: 很慢
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

# 方法2: 较快
# 与方法1无明显区别. 2048位也足够用, 4096更强
openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 4096

nilsmagnus

package main

import (
	"fmt"
	"github.com/Shopify/sarama"
	"os"
	"os/signal"
	"strings"
)