pazdera

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Example of Singleton design pattern
# Copyright (C) 2011 Radek Pazdera

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

windviki

"""SQLAlchemy Metadata and Session object"""
from sqlalchemy import MetaData
from sqlalchemy.orm import scoped_session, sessionmaker
from sqlalchemy.orm.session import Session as SessionBase
from sqlalchemy.interfaces import ConnectionProxy

from datetime import datetime
import time

__all__ = ['Session', 'metadata', 'BaseModel']

mrjoes

# -*- coding: utf-8 -*-

from tornado import ioloop, web, gen, httpclient

from sockjs.tornado import SockJSConnection, SockJSRouter


class IndexHandler(web.RequestHandler):
    """Regular HTTP handler to serve the ping page"""
    def get(self):

tanbro

from __future__ import annotations

from typing import Any, Dict, Iterable, Mapping, MutableMapping, MutableSequence, Union


class AttrDict:
    """
    A class with both dictionary and attribute style access to it's data member.

    It can be used in `RestrictedPython <http://restrictedpython.readthedocs.io/>`_

hest

def get_count(q):
    count_q = q.statement.with_only_columns([func.count()]).order_by(None)
    count = q.session.execute(count_q).scalar()
    return count

q = session.query(TestModel).filter(...).order_by(...)

# Slow: SELECT COUNT(*) FROM (SELECT ... FROM TestModel WHERE ...) ...
print q.count()

mitchwongho

# Assuming an Ubuntu Docker image
$ docker run -it <image> /bin/bash

dahjelle

Array Exercises (PHP)

Questions

1. If you have an array $a = array( 0, 1, 2, 3, 4 );, how do you extract the value 3 from the array?

2. If you have an array $a = array( "zero"=>0, "one"=>1, "two"=>2, "three"=>3, "four"=>4 );, how do you extract the value 3 from the array?

3. If you have the following array, how do you extract the value 3 from the array?

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

kunev

import asyncio

@asyncio.coroutine
def open_file(name):
    print("opening {}".format(name))
    return open(name)

@asyncio.coroutine
def close_file(file):
    print("closing {}".format(file.name))

safecat

# ATTENTION PLEASE!
# NOTE BY @riwazp7
# Note for future visitors of this gist: Mac OS has Apache Benchmark by default ab --help

curl -OL http://ftpmirror.gnu.org/libtool/libtool-2.4.2.tar.gz
tar -xzf libtool-2.4.2.tar.gz
cd libtool-2.4.2
./configure && make && sudo make install

# brew install 'https://raw.github.com/simonair/homebrew-dupes/e5177ef4fc82ae5246842e5a544124722c9e975b/ab.rb'