o11c

Note: this was originally several Reddit posts, chained and linked. But now that Reddit is dying I've finally moved them out. Sorry about the mess.

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URL: https://www.reddit.com/r/ProgrammingLanguages/comments/up206c/stack_machines_for_compilers/i8ikupw/ Summary: stack-based vs register-based in general.

There are a wide variety of machines that can be described as "stack-based" or "register-based", but not all of them are practical. And there are a lot of other decisions that affect that practicality (do variables have names or only address/indexes? fixed-width or variable-width instructions? are you interpreting the bytecode (and if so, are you using machine stack frames?) or turning it into machine code? how many registers are there, and how many are special? how do you represent multiple types of variable? how many scopes are there(various kinds of global, local, member, ...)? how much effort/complexity can you afford to put into your machine? etc.)

• a pure stack VM can only access the top elemen

danielbierwirth

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// To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ 
// or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using UnityEngine;

brake

# -*- coding: UTF-8 -*-

"""
CLI скрипт, поддерживающий две ветви параметров:
userdb.py append <username> <age>
userdb.py show <userid>

Заглушка предусматривает, что:
    пользователь с именем admin уже существует
    по userid = 1 всегда возвращается User(name='admin', age=20)

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

podhmo

import sqlalchemy as sa
import sqlalchemy.orm as orm
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.ext.declarative import declared_attr
from sqlalchemy.orm import scoped_session, sessionmaker

DBSession = scoped_session(sessionmaker())
class BaseMixin(object):
    query = DBSession.query_property()
    id = sa.Column(sa.Integer, primary_key=True)