VladimirPal

# Boolean
op.add_column('projects', sa.Column('is_closed', sa.Boolean(), server_default=sa.schema.DefaultClause("0"), nullable=False))

# DateTime
op.add_column('projects_users', sa.Column('created_at', sa.DateTime(), server_default=sa.func.current_timestamp(), nullable=False))

olivierlacan

This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important:

andela-anandaa

from collections import ChainMap

# Traditionally, you can combine dictionaries into one,
# however, this creates a totally new dictionary

# e.g. for Python 3.5, you could do this:

a = {'name': 'Andela'}
b = {'class': 'World'}

pv8

#!/usr/bin/env bash
#
# Fix virtualenv symlinks after upgrading python with Homebrew and then running
# `cleanup`.
#
# After upgrading Python using Homebrew and then running `brew cleanup` one can
# get this message while trying to run python:
# dyld: Library not loaded: @executable_path/../.Python
#   Referenced from: /Users/pablo/.venv/my-app/bin/python
#   Reason: image not found

cecilemuller

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

---

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

parikh5555

from Crypto.Cipher import AES
import base64
import os

# the block size for the cipher object; must be 16, 24, or 32 for AES
BLOCK_SIZE = 32

# the character used for padding--with a block cipher such as AES, the value
# you encrypt must be a multiple of BLOCK_SIZE in length.  This character is
# used to ensure that your value is always a multiple of BLOCK_SIZE

lawloretienne

Table Of Contents

• Data Structures
  • Linked Lists
  • Trees
    • Binary Trees
    • Binary Search Tree
    • Red-Black Tree
    • AVL Tree
• Tries

absent1706

def truncate_db(engine):
    # delete all table data (but keep tables)
    # we do cleanup before test 'cause if previous test errored,
    # DB can contain dust
    meta = MetaData(bind=engine, reflect=True)
    con = engine.connect()
    trans = con.begin()
    con.execute('SET FOREIGN_KEY_CHECKS = 0;')
    for table in meta.sorted_tables:
        con.execute(table.delete())

JonCatmull

import { Pipe, PipeTransform } from '@angular/core';

// Epochs
const epochs: any = [
    ['year', 31536000],
    ['month', 2592000],
    ['day', 86400],
    ['hour', 3600],
    ['minute', 60],
    ['second', 1]

JonCatmull

import { Pipe, PipeTransform } from '@angular/core';
import { DatePipe } from '@angular/common';

import { RelativeDatePipe } from './relative-date.pipe'; // https://gist.github.com/JonCatmull/e00afb1c96298a4e386ea1b5d091702a

const secondsInAday = 86400;

/*
 * Turn Date into realtive date (e.g. "5 days ago") unless date is
 * more than relativeMax days ago.