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SVN, CVS, Git, Microsoft TFS, Perforce, VSS using command line Yes diff: No No No Yes Yes with patch Yes with patch No No diff3: No No No Eclipse (compare) Yes CVS, Subversion, Git, Mercurial, Baazar: Yes Ediff: Yes Yes RCS, CVS, SVN, Mercurial, git (anything supported by Emacs' VC-mode) [36] Yes Yes Yes ExamDiff Pro: Yes [37] Yes [38] normal ...
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it is like Levenshtein distance in that it tries to determine the smallest set of deletions and insertions to create one file from the other.
Record: include only some changes to a file in a commit and not others; Note: Commands in green rectangles that are not surrounded by [square brackets] are at an interactive command-line prompt. Text in [square brackets] is an explanation of where to find equivalent functionality.
Unstructured merge operates on raw text, typically using lines of text as atomic units. This is what Unix tools (diff/patch) and CVS tools (SVN, Git) use. This is limited [opinion], as a line of text does not represent the structure of source code.
The number of function points would be exactly the same, but aspects of the application would be different. The lines of code needed to develop the application would certainly not be the same. As a consequence, the amount of effort required to develop the application would be different (hours per function point).
The computer tool patch is a Unix program that updates text files according to instructions contained in a separate file, called a patch file.The patch file (also called a patch for short) is a text file that consists of a list of differences and is produced by running the related diff program with the original and updated file as arguments.
That is, for source code where the average line is 60 or more characters long, the hash or checksum for that line might be only 8 to 40 characters long. Additionally, the randomized nature of hashes and checksums would guarantee that comparisons would short-circuit faster, as lines of source code will rarely be changed at the beginning.
Displaying the differences between two or more sets of data, file comparison tools can make computing simpler, and more efficient by focusing on new data and ignoring what did not change. Generically known as a diff [ 1 ] after the Unix diff utility , there are a range of ways to compare data sources and display the results.