onsdag 12. mai 2010

Essence of Subversion

My experience with Subversion was a bit confusing at first. I had used CSV before and tried to apply knowledge about it on svn, which didn't work well. But after a long time working with it, I think I got the essence of it.

Please type a comment if you find any errors :)

Essence of Subversion
  • an svn repository is basically a "hard drive", where the repository root is the root of the "disk". There is no such thing as a "module", "branch", "tag" nor "trunk". Everything is either a "folder" or a "file".
  • a "module", "branch", "tag" or "trunk" exists solely by naming convention and standard definition. Normal convention says that a module should be in a directory in the "root", branches should reside in a "[module]/branches" folder, tags in "[module]/tags" and trunk in "[module]/trunk".
  •  a repository has a single repository counter that is incremented for each commit. All files/dirs in a single commit is given the same number from this counter.
This means that a "tag" and a "branch" are essentially the same thing. The difference is that a tag (dir) is inside a folder named "tags", while a branch (dir) is inside the "branches" dir. Also, we accept content in a "branch" to be modifiable, but not files in a "tag".

The repository counter (a.k.a. revision number) can be viewed as "the number of times the repository has changed". If you check out the whole repository with rev #5, it means you will get the state of this "disk" after the 5th commit. To pick a specific version of a file, you need to know its location and the commit number for the wanted version.

2 kommentarer:

  1. Some French tables will make use of rules that generally help out the players. The "La Partage" and "En Prison" rules apply to exterior even cash bets like odds or 안전사이트 even, black or purple and low or high; additionally they apply when the ball lands in the zero slot. They are comparable in the sense that players only lose half of their wager, but players can not leave their wager on the table for one more spin with the La Partage rule. If a participant loses, they will collect half their wager in the La Partage rule, or leave half their wager on the table for the next spin with the En Prison rule.

  2. GambleAware supply players and their households advice and steering on playing. They 카지노사이트 supply data and advice to encourage responsible playing, both to players and casino operators, and provides help to those that might have a playing drawback. Opt for games with smaller jackpots, over massive progressive prizes.