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How do I execute inserts and updates in an Alembic upgrade script?
...m sqlalchemy import orm
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
class Player(Base):
__tablename__ = 'players'
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.String, nullable=False)
team_name = sa.Column('team', sa.String...
GCM with PHP (Google Cloud Messaging)
...it should give you some great examples on how to do this.
Here is a quick demo on how it would work....
<?php
require_once 'Zend/Mobile/Push/Gcm.php';
require_once 'Zend/Mobile/Push/Message/Gcm.php';
$message = new Zend_Mobile_Push_Message_Gcm();
$message->setId(time());
$message->addTok...
Is there a decorator to simply cache function return values?
...ion while the property syntax suggests a quick lookup.
[Update: The class-based memoization decorator I had linked to and quoted here previously doesn't work for methods. I've replaced it with a decorator function.] If you're willing to use a general-purpose memoization decorator, here's a simple...
Python: Why is functools.partial necessary?
.....:
>>> import functools
>>> f = functools.partial(int, base=2)
>>> f.args
()
>>> f.func
<type 'int'>
>>> f.keywords
{'base': 2}
>>>
functools.partial's returned function is decorated with attributes useful for introspection -- the func...
Best practice for Django project working directory structure
...t, excluded from VCS. It's used to
store media/static files and sqlite database during development. Everything in
tmp could be deleted anytime without any problems.
Virtualenv
I prefer virtualenvwrapper and place all venvs into ~/.venvs directory,
but you could place it inside tmp/ to keep it togeth...
__init__ for unittest.TestCase
...
You are overriding the TestCase's __init__, so you might want to let the base class handle the arguments for you.
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How to use auto-layout to move other views when a view is hidden?
...hidden = !self.mySubview.hidden
}
Jump to 11:48 in this WWDC video for a demo:
Mysteries of Auto Layout, Part 1
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Concept behind these four lines of tricky C code
...The number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+ shows the position of the sign; ^ of the exponent, and - of t...
What does 'var that = this;' mean in JavaScript?
...s a reference to the element clicked on
});
});
My answer originally demonstrated this with jQuery, which is only very slightly different:
$('#element').click(function(){
// this is a reference to the element clicked on
var that = this;
$('.elements').each(function(){
//...
How to decorate a class?
...rgs, **kwargs):
pass
class FooMeta(type):
def __new__(cls, name, bases, attrs):
attrs['__init__'] = substitute_init
return super(FooMeta, cls).__new__(cls, name, bases, attrs)
class Foo(object):
__metaclass__ = FooMeta
def __init__(self, value1):
pass
R...