Posts in this category
- Current State of Exceptions in Rakudo and Perl 6
- Meet DBIish, a Perl 6 Database Interface
- doc.perl6.org and p6doc
- Exceptions Grant Report for May 2012
- Exceptions Grant Report -- Final update
- Perl 6 Hackathon in Oslo: Be Prepared!
- Localization for Exception Messages
- News in the Rakudo 2012.05 release
- News in the Rakudo 2012.06 release
- Perl 6 Hackathon in Oslo: Report From The First Day
- Perl 6 Hackathon in Oslo: Report From The Second Day
- Quo Vadis Perl?
- Rakudo Hack: Dynamic Export Lists
- SQLite support for DBIish
- Stop The Rewrites!
- Upcoming Perl 6 Hackathon in Oslo, Norway
- A small regex optimization for NQP and Rakudo
- Pattern Matching and Unpacking
- Rakudo's Abstract Syntax Tree
- The REPL trick
- First day at YAPC::Europe 2013 in Kiev
- YAPC Europe 2013 Day 2
- YAPC Europe 2013 Day 3
- A new Perl 6 community server - call for funding
- New Perl 6 community server now live, accepting signups
- A new Perl 6 community server - update
- All Perl 6 modules in a box
- doc.perl6.org: some stats, future directions
- Profiling Perl 6 code on IRC
- Why is it hard to write a compiler for Perl 6?
- Writing docs helps you take the user's perspective
- Perl 6 Advent Calendar 2016 -- Call for Authors
- Perl 6 By Example: Running Rakudo
- Perl 6 By Example: Formatting a Sudoku Puzzle
- Perl 6 By Example: Testing the Say Function
- Perl 6 By Example: Testing the Timestamp Converter
- Perl 6 By Example: Datetime Conversion for the Command Line
- What is Perl 6?
- Perl 6 By Example, Another Perl 6 Book
- Perl 6 By Example: Silent Cron, a Cron Wrapper
- Perl 6 By Example: Testing Silent Cron
- Perl 6 By Example: Stateful Silent Cron
- Perl 6 By Example: Perl 6 Review
- Perl 6 By Example: Parsing INI files
- Perl 6 By Example: Improved INI Parsing with Grammars
- Perl 6 By Example: Generating Good Parse Errors from a Parser
- Perl 6 By Example: A File and Directory Usage Graph
- Perl 6 By Example: Functional Refactorings for Directory Visualization Code
- Perl 6 By Example: A Unicode Search Tool
- What's a Variable, Exactly?
- Perl 6 By Example: Plotting using Matplotlib and Inline::Python
- Perl 6 By Example: Stacked Plots with Matplotlib
- A shiny perl6.org site
- Creating an entry point for newcomers
- An offer for software developers: free IRC logging
- Announcing try.rakudo.org, an interactive Perl 6 shell in your browser
- Another perl6.org iteration
- Blackjack and Perl 6
- Why I commit Crud to the Perl 6 Test Suite
- This Week's Contribution to Perl 6 Week 5: Implement Str.trans
- This Week's Contribution to Perl 6
- This Week's Contribution to Perl 6 Week 8: Implement $*ARGFILES for Rakudo
- This Week's Contribution to Perl 6 Week 6: Improve Book markup
- This Week's Contribution to Perl 6 Week 2: Fix up a test
- This Week's Contribution to Perl 6 Week 9: Implement Hash.pick for Rakudo
- This Week's Contribution to Perl 6 Week 11: Improve an error message for Hyper Operators
- This Week's Contribution to Perl 6 - Lottery Intermission
- This Week's Contribution to Perl 6 Week 3: Write supporting code for the MAIN sub
- This Week's Contribution to Perl 6 Week 1: A website for proto
- This Week's Contribution to Perl 6 Week 4: Implement :samecase for .subst
- This Week's Contribution to Perl 6 Week 10: Implement samespace for Rakudo
- This Week's Contribution to Perl 6 Week 7: Implement try.rakudo.org
- What is the "Cool" class in Perl 6?
- Report from the Perl 6 Hackathon in Copenhagen
- Custom operators in Rakudo
- A Perl 6 Date Module
- Defined Behaviour with Undefined Values
- Dissecting the "Starry obfu"
- The case for distributed version control systems
- Perl 6: Failing Softly with Unthrown Exceptions
- Perl 6 Compiler Feature Matrix
- The first Perl 6 module on CPAN
- A Foray into Perl 5 land
- Gabor: Keep going
- First Grant Report: Structured Error Messages
- Second Grant Report: Structured Error Messages
- Third Grant Report: Structured Error Messages
- Fourth Grant Report: Structured Error Messages
- Google Summer of Code Mentor Recap
- How core is core?
- How fast is Rakudo's "nom" branch?
- Building a Huffman Tree With Rakudo
- Immutable Sigils and Context
- Is Perl 6 really Perl?
- Mini-Challenge: Write Your Prisoner's Dilemma Strategy
- Longest Palindrome by Regex
- Perl 6: Lost in Wonderland
- Lots of momentum in the Perl 6 community
- Monetize Perl 6?
- Musings on Rakudo's spectest chart
- My first executable from Perl 6
- My first YAPC - YAPC::EU 2010 in Pisa
- Trying to implement new operators - failed
- Programming Languages Are Not Zero Sum
- Perl 6 notes from February 2011
- Notes from the YAPC::EU 2010 Rakudo hackathon
- Let's build an object
- Perl 6 is optimized for fun
- How to get a parse tree for a Perl 6 Program
- Pascal's Triangle in Perl 6
- Perl 6 in 2009
- Perl 6 in 2010
- Perl 6 in 2011 - A Retrospection
- Perl 6 ticket life cycle
- The Perl Survey and Perl 6
- The Perl 6 Advent Calendar
- Perl 6 Questions on Perlmonks
- Physical modeling with Math::Model and Perl 6
- How to Plot a Segment of a Circle with SVG
- Results from the Prisoner's Dilemma Challenge
- Protected Attributes Make No Sense
- Publicity for Perl 6
- PVC - Perl 6 Vocabulary Coach
- Fixing Rakudo Memory Leaks
- Rakudo architectural overview
- Rakudo Rocks
- Rakudo "star" announced
- My personal "I want a PONIE" wish list for Rakudo Star
- Rakudo's rough edges
- Rats and other pets
- The Real World Strikes Back - or why you shouldn't forbid stuff just because you think it's wrong
- Releasing Rakudo made easy
- Set Phasers to Stun!
- Starry Perl 6 obfu
- Recent Perl 6 Developments August 2008
- The State of Regex Modifiers in Rakudo
- Strings and Buffers
- Subroutines vs. Methods - Differences and Commonalities
- A SVG plotting adventure
- A Syntax Highlighter for Perl 6
- Test Suite Reorganization: How to move tests
- The Happiness of Design Convergence
- Thoughts on masak's Perl 6 Coding Contest
- The Three-Fold Function of the Smart Match Operator
- Perl 6 Tidings from September and October 2008
- Perl 6 Tidings for November 2008
- Perl 6 Tidings from December 2008
- Perl 6 Tidings from January 2009
- Perl 6 Tidings from February 2009
- Perl 6 Tidings from March 2009
- Perl 6 Tidings from April 2009
- Perl 6 Tidings from May 2009
- Perl 6 Tidings from May 2009 (second iteration)
- Perl 6 Tidings from June 2009
- Perl 6 Tidings from August 2009
- Perl 6 Tidings from October 2009
- Timeline for a syntax change in Perl 6
- Visualizing match trees
- Want to write shiny SVG graphics with Perl 6? Port Scruffy!
- We write a Perl 6 book for you
- When we reach 100% we did something wrong
- Where Rakudo Lives Now
- Why Rakudo needs NQP
- Why was the Perl 6 Advent Calendar such a Success?
- What you can write in Perl 6 today
- Why you don't need the Y combinator in Perl 6
- You are good enough!
Tue, 10 Apr 2012
Perl 6 Hackathon in Oslo: Be Prepared!
The Oslo Perl Mongers invite to the Perl 6 Patterns Hackathon in Oslo. I have previously suggested that we hack on database connectivity, and so far only got positive feedback. If you want to help, here is what you can do to be prepared:
- Get a github account
- Build and install Rakudo
- Build and install zavolaj/NativeCall
- download MiniDBI
- install and prepare databases to talk to
To hack efficiently on those projects, and to benefit from last-minute fixes, you should obtain Rakudo, NativeCall and MiniDBI from their git source repositories -- that last release is already outdated.
Here are the instructions in detail. If at any point you run into problems, feel free to ask on the #perl6 IRC channel or the email@example.com mailing list.
Get a Github account
Build and install Rakudo
This step is described well on the Rakudo homepage. Please follow the instruction in section "Building the compiler from source".
For the following steps it is important that you have a fresh
perl6 executable file in your $PATH. If you have downloaded
/home/you/p6/rakudo/, you can run the command
(and put it in your ~/.bashrc file if you want it permanently available, not just in this shell).
Build and install zavolaj/NativeCall
NativeCall.pm is the high-level interface for calling C functions from Perl 6 code. Install it:
$ git clone git://github.com/jnthn/zavolaj.git $ cd zavolaj $ cp lib/NativeCall.pm6 ~/.perl6/lib/
If you download and install ufo, you can use it create a
Makefile for zavolaj. Then you can also run
make test. On Linux it might not find the
test libraries (which is mostly harmless, because you usually call libraries
that are installed into your operating system, like those from mysql or
postgres). In this case you should run
That's not hard at all:
$ git clone git://github.com/mberends/MiniDBI.git
Install and Prepare Databases
So far, MiniDBI has (somewhat limited) support for mysql and postgres. Since it is always easiest to start from (at least somewhat) working code, I strongly recommend that you install at least one of those database engines.
Most modern Linux systems allow an easy installation via the package manager, and there are installers available for other operating systems. Be sure to also install the headers or development files if they come as extra packages.
root user, run these statements:
CREATE DATABASE zavolaj; CREATE USER 'testuser'@'localhost' IDENTIFIED BY 'testpass'; GRANT SELECT ON mysql.* TO 'testuser'@'localhost'; GRANT CREATE ON zavolaj.* TO 'testuser'@'localhost'; GRANT DROP ON zavolaj.* TO 'testuser'@'localhost'; GRANT INSERT ON zavolaj.* TO 'testuser'@'localhost'; GRANT DELETE ON zavolaj.* TO 'testuser'@'localhost'; GRANT LOCK TABLES ON zavolaj.* TO 'testuser'@'localhost'; GRANT SELECT ON zavolaj.* TO 'testuser'@'localhost';
psql as the
postgres user and run these
CREATE DATABASE zavolaj; CREATE ROLE testuser LOGIN PASSWORD 'testpass'; GRANT ALL PRIVILEGES ON DATABASE zavolaj TO testuser;
You should now be able to connect with:
psql --host=localhost --dbname=zavolaj --username=testuser --password
(psql will ask you for the password. Enter
If you want to work on a backend for another database, it helps to have that database installed. Sqlite is an obvious choice (easy to install, zero setup), but of course there are other free database too, like firebird.
There is a lot of stuff to do. What follows is only a loose, incomplete collection of ideas.
- Fix the postgres backend to actually pass its tests
- Both mysql and postgres backends don't implement placeholders properly; change them (or one of them) to pass the placeholder values out of band.
- Write an sqlite backend
- Currently the user builds a DSN ("data source name") string out of the driver name, database name, db host name and so on, and then the driver parses it again. One could change that to pass all the information as named parameters instead.
- Improve test coverage. For example test that numbers round-trip with the correct types.
- Write a small application that uses a database. That's the best way to see if MiniDBI and the backends work.