Code Management

About me
Thong Kuah
ProjectX Technology
<thong@projectx.co.nz>

Where is that file?

Needle in a Haystack

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Code Management

Change
Fix it now

Change
● Who last changed this file?
● Who made that change, when and why?
● Where is that bug?
● Has the code changed or not?
● How is it different?
● Can you put your fixes into my files?
● Messy fixes
● ...

Change

How to manage
changes to code?

Bob → Alice
VERSION 2.1
Oops

Alice → Bob
Please choose:
VERSION 4a:
Based on V3 + 2.1
VERSION 4b:
Based on V3.1 + 2.1
Version 4c: Rewrite

How?

Tools
&
Practices

Version Control Tools

●SVN
●Git

Version Control Tools
Mercurial
SVN
●

● ● Bazaar
CVS
●Git
●

● Visual SourceSafe
● GNU arch
● Darcs
● Perforce
● ....

Version Control

● Stores code

Version Control

● Stores code
● Does versioning for

you

Version Control

● Stores code
● Does versioning for

you
● Records changes from

multiple sources

Version Control

● Stores code
● Does versioning for you

● Handles changes from

multiple sources
● Merges them nicely

Basics

●You get code
●You change code

●You share your

changes

Basics (II)

●Others get code
●Others change code

●Others share

Basics (II)

●Others get code

●Others share

●You get more code

Basics (II)

●Others get code

●Others share

●You get more code

●And around it goes

Summary

●Change happens
●Use best practice

●Use tools

●Source control basics –

workshop later

Further Information
● gittutorial(7)
● SVN Red Book
● http://betterexplained.com/articles/a-visual-
guide-to-version-control/
● http://www.swc.scipy.org/lec/version.html

Credits, Attribution
● http://www.flickr.com/photos/vespa_gt/373805114/sizes/m/

● http://www.flickr.com/photos/ezu/277341190/sizes/o/

● http://www.flickr.com/photos/addedentry/2222911325/

● http://www.flickr.com/photos/charlieferrari/49323751/sizes/o/

● http://www.flickr.com/photos/aliciayeah/262229883/sizes/l/

● http://www.flickr.com/photos/nickwheeleroz/2475011402/sizes/l/

● http://www.flickr.com/photos/herzogbr/2123789106/sizes/l/

● http://www.flickr.com/photos/sgt_spanky/2470700936/

● http://www.flickr.com/photos/striatic/340190783/

● http://www.flickr.com/photos/7506006@N07/513417996/in/set-72157600264508078/

● http://www.flickr.com/photos/7506006@N07/513453021/

● http://www.flickr.com/photos/mattwright/1787856/sizes/l/

● http://www.flickr.com/photos/ryanr/142455033/sizes/o/

● http://www.flickr.com/photos/tjflex/233574885/sizes/l/

● http://www.flickr.com/photos/mrtea/1278546801/sizes/l/

● http://www.flickr.com/photos/rachelrusinski/533767098/sizes/o/

● http://www.cs.utk.edu/dilab/SDR_robots.jpg

● http://www.mat.uc.pt/~emsa/Historia2007/Imagens/Black_Hole_Milkyway.jpg

Credits, Attribution
● http://commons.wikimedia.org

● http://www.flickr.com/photos/missmirr/529688823/sizes/o/

● http://www.flickr.com/photos/jan_isaac/383512885/sizes/o/

● http://upload.wikimedia.org/wikipedia/commons/c/ce/Mail-envelope.png

● http://commons.wikimedia.org/wiki/File:Wellington_weta_female.jpg

● http://commons.wikimedia.org/wiki/File:Darcs-ag-merge-symmetry.png

Code Management

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