1.
reati on for
gem c eople
lazy p

2.
me

3.
RubyGems?

4.
git?

5.
community
projects?

6.
RubyOnRails?

7.
“a gem is a packaged
Ruby application or
library. It has a name
(e.g. rake) and a
version (e.g. 0.4.16)”

8.
code reuse

9.
knowledge share

10.
steering complexity

11.
ease management

12.
build your own

13.
build your own
newgem [old]

14.
build your own
newgem [old]
hoe + echoe

15.
build your own
newgem [old]
hoe + echoe
jeweler

16.
build your own
newgem [old]
hoe + echoe
jeweler
bundler

17.
...so which one?

18.
http://gembundler.com/

19.
$> bundle gem <gem_name>

20.
let’s take a look!

21.
http://docs.rubygems.org/read/chapter/20#page85

22.
$> rake build
$> gem build <gem_name>

23.
$> rake install

24.
$> rake publish

25.
what !?!

26.
$> more .gem/credentials
---
:rubygems_api_key: 7ca86ac50d7a644f019a2441a9

27.
http://www.mint.com/blog/trends/credit-card-code-01202011/

28.
http://en.wikipedia.org/wiki/Bank_card_number

29.
http://en.wikipedia.org/wiki/Luhn_algorithm

30.
http://github.com/tobias/credit_card_validator

31.
DEMO

32.
questions?

33.
!anks.
@fuzziness
michele@franzin.net

34.
why?
http://www.flickr.com/photos/ksayer/
knowledge share
http://www.flickr.com/photos/linsight/
ease management
http://www.flickr.com/photos/gabrielsaldana/