The Design of Software (CLOSED)

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Branching the code?

Hi, I've heard the term branching the code used every once in a while but could someone please clarify what the term "to branch code" means?
Anthony Gerrard Send private email
Tuesday, June 26, 2007
 
 
This is a good explanation: http://www.ericsink.com/scm/scm_branches.html
John Topley Send private email
Tuesday, June 26, 2007
 
 
While the link has a good detailed view, a simple explanation would be like the following.

Any application consists of one or more (sometimes many, sometimes a HUGE number) of files.

Now, when you have an "identified version" of the code, to build that "identified version" requires the set of source files.

As Erik says, having released a 1.0 version of the code, you'll now want a 1.01 version for patch fixes, as well as a 2.0 version for the next full release. 

So, you'll 'branch' the code set.  Before version control systems, you'd actually copy a complete set of the source files, name one '1.01', and one '2.0'.  Then edit 1.01 to add patches, and edit 2.0 to become the next version.

Version Control systems are to help resolve when fixes in 1.01 should (or should not) be included in 2.0.  And to reduce the amount of copying and redundancy needed to have two (or more) branches.
AllanL5
Tuesday, June 26, 2007
 
 
John Topley, you took the link right out of my mouth.
Sumana Harihareswara Send private email
Tuesday, June 26, 2007
 
 

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