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Arudino StereoSID emulates the SID sound chip of the famous Commodore 64. It is based on the Atmega8 MOS6581 SID Emulator from Christoph Haberer. Library conversion and memory optimization by Mario Patino. Stereo Effect by Giovanni Giorgi

https://github.com/daitangio/sid-arduino-lib

Working in a big company, my work laptop came with MS-Windows7 Enterprise installed. But as you imagine, Unix is my preferred desktop environment. So let’s how to configure a perfect Debian Linux for a old wolf consultant like me. You will be able to install commercial software mubmo jumbo like Oracle Express and IBM Websphere in a snap, and have a 64 rock solid system, easy to bring in a USB stick if you like.

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Sometimes you are behind a http proxy, and the git:// protocol is not accessible.

For instance on erlang rebar, all developers  prefer the git:// protocol when listing dependency. But how to fix it if you are behind a http proxy?

Ask help to git… [bash] git config –global url.https://github.com/.insteadOf git://github.com/ [/bash]

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After a bunch of time, I take back my Erlang Hammer from the sand of time.

The result is ErZauker v0.0.2 the first pure-Erlang implementation of a code indexer.

Er Zauker is a tiny but speedy search engine tailoring code searches. Zauker is backed by REDIS, the fastest RAM-based NoSQL engine you have never seen.

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If you have an application with thousand of beans, you must do unit testing but…Spring testing is boring, belive me. A very complex Spring application usually have a lot of dependency: I had to manage over 3000 beans definitions in a production project right now. Sometimes you want only to test a bit of it, and setting up a complete Spring Context will drive you crazy. To avoid losing mind, my suggestion is to …cheat. Let’see how.

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Userful Commands:

1. keep-lines
2. sort-lines

For more similar options, see this "working with lines"

For playing with rectangles of text, see this tip

I stumbled upon a very brain-f**k error on Oracle 10g on these days.

Context: the following query [sql]SELECT * FROM (
SELECT TO_NUMBER(CUSTOMER_ID) AS SNDG FROM BAD_CODES_TABLE WHERE
AND I_LIKE=UPPER(‘STATIC_CONDITION’) AND CUSTOMER_ID NOT LIKE ‘%P%’ ) S WHERE TO_NUMBER(S.SNDG) >2000[/sql] could trigger a Invalid number if CUSTOMER_ID column contains invalid numbers.

Why?

Well…if you ask to “explain plan”, you will get something like

• a table full scan
  • Filter Predicates AND
    • I_LIKE=UPPER('STATIC_CONDITION')
    • TO_NUMBER(S.SNDG) >2000
    • CUSTOMER_ID NOT LIKE '%P%'

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How I Structure My Flask Applications Flask has been my preferred web framework as of late. I think it has a great core feature set and Armin, the main author, has done well to keep its API minimal and easy to digest even for developers that are relatively new to Python. However, given that it is a rather minimal framework, it can be often difficult to decide on how to structure an application after it reaches a certain level of complexity. It tends to be a common question that comes up in the #pocoo IRC channel.In this article I intend to share how I structure Flask applications. To help support this article Ive written a very basic application that Ive arbitrarily named Overholt. If you plan on following along I recommend having the source code open in your browser or a code editor.

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