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Flask-SQLAlchemy import/context issue
...y
db = SQLAlchemy()
class Member(db.Model):
# fields here
pass
And then in your application setup you can call init_app:
# apps.application.py
from flask import Flask
from apps.members.models import db
app = Flask(__name__)
# later on
db.init_app(app)
This way you can avoid cyclical ...
Does Android support near real time push notification?
...M. It inherits GCM’s core infrastructure to deliver messages reliably on Android, iOS and Chrome. However they'll continue to support GCM because lot of developers are using GCM SDKs today to handle notifications, and client app upgrade takes time.
As of June 26, 2012, Google Cloud Messaging is t...
The Definitive C++ Book Guide and List
...ious programming experience
C++ Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for C++11) Coming at 1k pages, this is a very thorough introduction into C++ that covers just about everything in the language in a very accessible format and in great detail. The fifth edition (...
In Python, how do you convert seconds since epoch to a `datetime` object?
...datetime.utcfromtimestamp creates a naive timestamp. I had to import pytz and use datetime.fromtimestamp(1423524051, pytz.utc) to create an aware datetime.
– Matt
Feb 9 '15 at 23:21
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CSS to line break before/after a particular `inline-block` item
... is a good way to do what you want to do. Anything you insert using :after and content has exactly the same syntactic and semantic validity it would have done if you had just written it in there yourself.
The tools CSS provide work. You should just float the lis and then clear: left when you want t...
PHP code to remove everything but numbers
...9]/', '', '604-619-5135');
preg_replace uses PCREs which generally start and end with a /.
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Stretch and scale a CSS image in the background - with CSS only
I want that my background image stretch and scale depending on the browser viewport size.
22 Answers
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Delete last char of string
I am retrieving a lot of information in a list, linked to a database and I want to create a string of groups, for someone who is connected to the website.
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Strings as Primary Keys in SQL Database [closed]
I am not very familiar with databases and the theories behind how they work. Is it any slower from a performance standpoint (inserting/updating/querying) to use Strings for Primary Keys than integers?
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Plain Old CLR Object vs Data Transfer Object
...POCO follows the rules of OOP. It should (but doesn't have to) have state and behavior. POCO comes from POJO, coined by Martin Fowler [anecdote here]. He used the term POJO as a way to make it more sexy to reject the framework heavy EJB implementations. POCO should be used in the same context in...