davecgh

Table of Contents

1. Overview
2. Getting Started

### 1. Overview

When developing bitcoin applications or testing potential changes, it is often extremely useful to have a test network where transactions are actually mined into blocks and difficulty levels are low enough to generate blocks as needed.

In order to facilitate these scenarios, btcd provides a simulation network (--simnet). The following is an overview of the most important properties that distinguish it from the main network:

jtblin

package main

import (
	"crypto/rand"
	"flag"
	"log"
	mrand "math/rand"
	"net"
	"os"
	"os/signal"

amorgun

from sqlalchemy.dialects import postgresql

def bulk_upsert(session: Session, 
                items: Sequence[Mapping[str, Any]]):
  session.execute(
    postgresql.insert(MyModel.__table__)
    .values(items)
    .on_conflict_do_update(
      index_elements=[MyModel.id],
      set_={MyModel.my_field.name: 'new_value'},

premek

# Put this function to your .bashrc file.
# Usage: mv oldfilename
# If you call mv without the second parameter it will prompt you to edit the filename on command line.
# Original mv is called when it's called with more than one argument.
# It's useful when you want to change just a few letters in a long name.
#
# Also see:
# - imv from renameutils
# - Ctrl-W Ctrl-Y Ctrl-Y (cut last word, paste, paste)