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Sometimes, your ORM just seems to be out to get you. For instance, I’ve been investigating a technique for the most important data structure in a system to be essentially immuatable. That is, instead of updating an existing instance of the object, we always create a new instance. This requires a handful of things to be useful (and useful for querying). We want to have a timestamp on each object, so we can view a snapshot at a given time: that is, which phase of the lifecycle was active at that point.

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Sometimes, your ORM just seems to be out to get you. For instance, I’ve been investigating a technique for the most important data structure in a system to be essentially immuatable. That is, instead of updating an existing instance of the object, we always create a new instance. This requires a handful of things to be useful (and useful for querying). We want to have a timestamp on each object, so we can view a snapshot at a given time: that is, which phase of the lifecycle was active at that point.

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Blog - Schinckel.net | schinckel.net Reviews

https://schinckel.net

Sometimes, your ORM just seems to be out to get you. For instance, I’ve been investigating a technique for the most important data structure in a system to be essentially immuatable. That is, instead of updating an existing instance of the object, we always create a new instance. This requires a handful of things to be useful (and useful for querying). We want to have a timestamp on each object, so we can view a snapshot at a given time: that is, which phase of the lifecycle was active at that point.

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Archives for March, 2015 - Schinckel.net

http://schinckel.net/2015/02

Bowled over by Postgres. There’s a nice article at Bowled Over by SQL Window Functions. By a chap called Dwain Camps. It’s written from the perspective of T-SQL, which has some differences to Postgres’s DDL and querying. I’ve reworked his stuff into what feels nice for me from a Postgressy perspective. I’ll recap a couple of things he mentions, but you’ll probably want to head there and read that first. By convention, only the running tally is shown on the scoresheet. I’ve kept the. As the score for.

2

Tags: ORM - Schinckel.net

http://schinckel.net/tags/orm

Django Single Table Inheritance on the cheap. There was a recent question on Stack Overflow about Django Single Table Inheritance (STI). It got me thinking about how to use my FSM-proxy stuff to just be about STI. Note: this only works when all sub-classes have the same fields: the example we are going to use here is different to a state machine, in that an object may not change state after it has been created. In this case, we can fetch all sheep as. However, this gives us the objects as. We also need t...

3

Tags: proxy - Schinckel.net

http://schinckel.net/tags/proxy

Django Proxy Model Relations. I’ve got lots of code I’d do a different way if I were to start over, but often, we have to live with what we have. One situation I would seriously reconsider is the structure I use for storing data related to how I interact with external systems. I have an. Object, and I create instances of this for each external system I interact with. Each new. But that’s not the worst of it. I also have an. Object, and other related objects that store a relation to an. That we probably w...

4

Tags: SQL - Schinckel.net

http://schinckel.net/tags/sql

Long Live Adjacency Lists. I recently wrote about the excellent book SQL Antipatterns. And in it briefly discussed the tree structures. I’ve been thinking about trees in Postgres. A fair bit lately, and a discussion on #django. Gave me further incentive to revisit this topic. The book discusses four methods of storing a tree in a database. Postgres has an extension called ltree. Which provides an implementation of a. Structure would give you over simply storing the keys in an. From all of these, there ar...

5

Collection+JSON Primer (and comments) - Schinckel.net

http://schinckel.net/2012/03/10/collection+json-primer-(and-comments)

Collection JSON Primer (and comments). Created by Mike Amundsen, is a standard way of creating hypermedia APIs. There were a few things I didn’t pick up correctly reading through his great book, or the spec. First, let us look at a partial example document. Http:/ api.example.com/. Content-Type: application/vnd.collection json;version=1.0. Just as the version of the document is contained within the Etag header (. Anyway, I’ll let that slide for now. Secondly, having the. Http:/ api.example.com. The other...

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djangoapp.com

Installing Django on Apple Mac OS X 10.7 aka Lion | A Non-Programmer Approach to Django

http://www.djangoapp.com/blog/2011/07/25/django-installation-on-mac-os-x-lion

A Non-Programmer Approach to Django. Dirty ways to get Around with Django Python Web Framework. Skip to primary content. Skip to secondary content. Django Installation on Mac OS X Lion. July 25, 2011. Once done with fresh installation of Mac OS X Lion, immediate task was setting up my development environment which includes MySQL server, phpMyAdmin and Django. Steps I followed to get Django development environment back are as below. Extract tar -xvzf jpegsrc.v8c.tar.gz. Switch to jpeg directory cd jpeg-8c.

richardrodger.com

The JavaScript Disruption | Richard Rodger

http://www.richardrodger.com/2011/04/05/the-javascript-disruption

My Startup Diary Articles. Nodejs Dealing with submitted HTTP request data when you have to make a database call first. Nodejs How to Write a For Loop With Callbacks →. April 5, 2011. The mainstream programming language for the next ten years will be JavaScript. Once considered a toy language useful only for checking form fields on web pages, JavaScript will come to dominate software development. Why this language and why now? How can such a prediction be made? How can one make it so confidently? Despite...

chesnok.com

PDX11 Civic Unconference Hacking report

http://www.chesnok.com/daily/2011/04/06/pdx11-civic-unconference-hacking-report

Tending The Garden: a blog about postgres, open source and the web. April 6, 2011. PDX11 Civic Unconference Hacking report. The next morning, Saturday April 2, we had another orientation, but focused on people’s hacking projects and an unconference. Many thanks to Kris Wetzel of Emma. Who organized all our food and drink Friday and Saturday, and to Tropo, who sponsored Saturday’s lunch. The guys from BarBird. Built a layer in Geoloqi. Myself and Jill Burrows worked on a way to extract sentences from Wiki...

jes.al

Blog · Jesal Gadhia

http://jes.al/blog

Setting Up A Rails Development Environment Using Docker. A couple of years ago I wrote about how to setup a local development environment using Vagrant. While Vagrant has worked out great, containerization with Docker has become all the rage. So I decided to take it for a spin to see what all the fuss is all about. I’m going to use an existing Rails app as my test subject. So before we get started, here’s what you’ll need to install:. Ln -s /.ssh/ keys. First thing we’ll do is create a. To make sure the ...

tlsoftware.wordpress.com

Relationship Completer v1.1.0 | tl.software

https://tlsoftware.wordpress.com/software/relationship-completer

A software engineer’s view on software. Relationship Completer v1.1.0. Max OS X 10.3.9. Download Relationship Completer v1.1.0. Place the plugin in /Library/Address Book Plug-Ins/. To make the plugin available to all users of your Mac) or in /Library/Address Book Plug-Ins/. Where is your home directory, to make the plugin only available to you). Restart Address Book if it is running. This Address Book plugin was inspired by my previous rant. German (thanks to Dr. Uwe Werner). Version 1.1.0:. Now supports...

touchsahp.wordpress.com

HP Comments | High Performance

https://touchsahp.wordpress.com/hp-comments

Do you have a topic or idea to discuss? FORMAT FOR THE WEEKEND. We will be looking to ensure that all the players involved get an opportunity to meet and learn from each of the invited guests. The SA Selectors will be dividing the players into 4 groups who will rotate through over the weekend working with each of the players and coaches. 1 Ben Magi - May 1, 2007. I would be very interested to hear the views, particularly of the guest coaches, on motivation techniques that are aimed at getting a high leve...

finkbuilt.com

Finkbuilt » Blog Archive » Concrete lightbulb

http://www.finkbuilt.com/blog/8

Scale model cockpit FPV. My wife noticed this. In the family archives. RC Nitro motorcycle racing. Here’s an RC multicopter. Big enough to ride on! I had a fun time talking to Mark Frauenfelder in episode 4 of his new podcast, Make: Talk. One Man Basement Band. I feel like I could be getting more mileage out of my right foot. My friend Tess just made the cover of ReadyMade with her cool lamp design. The design is so awesomely Thunderbirds. Sweet assemblage spaceship’s bridge. Laquo; Two-bit wedding rings.

blog.strug.de

My Homebrew Multi User Setup

http://blog.strug.de/2012/06/my-homebrew-multi-user-setup

Homebrew without Xcode – save 1,5 GB! Fixing slow DNS resolution on Mac 10.8. My Homebrew Multi User Setup. Currently I’m setting up a new SSD. One of my first installations is homebrew. A must have IMO. Update 2013-05-31: considering /Library/Caches/Homebrew. Allen checks if he installed brew correctly). Sudo chgrp -R brew /usr/local. Change the group of homebrew installation directory). Sudo chmod -R g w /usr/local. Allow group members to write inside this directory). Stan checks if he can use homebrew).

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Neem direct contact op:. 077 398 22 88. Dit domein word gehost door SAM Office. SAM Office BV is als ICT dienstverlener sinds begin 2005 actief. We richten ons op de lokale markt waarbij we ondersteuning bieden op automatiseringsvraagstukken. Daarnaast hebben wij een duidelijk specialisme ontwikkeld waarmee we binnen Nederland grote bedrijven en instellingen ondersteunen in bijvoorbeeld hun behoefte om thuiswerken op een veilige manier te kunnen vrijgeven. Neem contact met ons op. 31 77 398 22 88.

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Welcome to the homepage of the Schinckel family all over the world. We are currently 39 Schinckels in a Genealogical Tree of another 27 ancestors. If you know something about the History about Schinckels or you are one of us, please let me know. Herzlich Willkommen auf der Homepage der Schinckel Familie weltweit. Wir sind zur Zeit 39 Schinckels in einem Stammbaum mit weiteren 27 Vorfahren. Wenn Du ewas über die Geschichte der Schinckels weißt oder selbst einer von uns bist, dann laß es mich wissen.

schinckel.net

Blog - Schinckel.net

Sometimes, your ORM just seems to be out to get you. For instance, I’ve been investigating a technique for the most important data structure in a system to be essentially immuatable. That is, instead of updating an existing instance of the object, we always create a new instance. This requires a handful of things to be useful (and useful for querying). We want to have a timestamp on each object, so we can view a snapshot at a given time: that is, which phase of the lifecycle was active at that point.

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Simon Schinckel has been manufacturing the Built Strong-To-Last-Long hay rakes in Naracoorte, South Australia since 1991. The rakes are renowned for strength, workmanship and performance. Schinckel Engineering manufactures an extensive range of Farmer, Heavy Duty, Combination and One-Line Hay Rakes. Please take the time to view our product range using the above links.

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Playing with fire (aka Taiko). Snuggling with Anya Banya Beanya! Really excited about the ball to tonight. Mira’s first day as a kookaburra was yesterday. It has been a roller coaster of emotions for her, but here she is excited to head off in the morning. At the spray park. A fun day complete with blueberry ice cream! Anya got to ride with dad. She was very interested in picking berries though! Atonement by Toni Romero.

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