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How do document diff algorithms work?

由 爱⌒轻易说出口 提交于 2019-11-27 05:05:48
问题 I want to implement word document differ, what algorithms does it requires to implement? 回答1: The Most optimize solution of lcs is O(ND) Myer 's algorithm , and here is an algorithmic approach which I used to implement to diff office 2007 documents. Link to algorithm paper 回答2: Well, generally speaking, diff 'ing is usually solved by the Longest common subsequence problem. Also see the "Algorithm" section of the Wikipedia article on Diff: The operation of diff is based on solving the longest

Using Visual Studio 2012's built-in merge tool with Git

由 左心房为你撑大大i 提交于 2019-11-27 05:04:27
问题 So, I don't know if anyone's noticed but the new Merge Tool packaged with VS2012 is sick-o to the max. I've recently moved to Git for my source control and really want to be able to set up VS2012 as my default difftool/mergetool. Any suggestions as to how to do this? I'd rather the diff/merge is started in the active VS2012 window and not a new instance if possible. 回答1: If you are using Git Source Control Provider with Visual Studio, it looks like this feature was implemented and is

How can I generate a git diff of what's changed since the last time I pulled?

由 三世轮回 提交于 2019-11-27 04:58:37
问题 I'd like to script, preferably in rake, the following actions into a single command: Get the version of my local git repository. Git pull the latest code. Git diff from the version I extracted in step #1 to what is now in my local repository. In other words, I want to get the latest code form the central repository and immediately generate a diff of what's changed since the last time I pulled. 回答1: You could do this fairly simply with refspecs. git pull origin git diff @{1}.. That will give

Recursive diff of two python dictionaries (keys and values)

由 限于喜欢 提交于 2019-11-27 04:29:11
So I have a python dictionary, call it d1 , and a version of that dictionary at a later point in time, call it d2 . I want to find all the changes between d1 and d2 . In other words, everything that was added, removed or changed. The tricky bit is that the values can be ints, strings, lists, or dicts, so it needs to be recursive. This is what I have so far: def dd(d1, d2, ctx=""): print "Changes in " + ctx for k in d1: if k not in d2: print k + " removed from d2" for k in d2: if k not in d1: print k + " added in d2" continue if d2[k] != d1[k]: if type(d2[k]) not in (dict, list): print k + "

Large github commit diff not shown

由 戏子无情 提交于 2019-11-27 04:26:52
问题 This happens to me both with Compare view as well as standard commits that are large in the amount of files changed. The screenshot below is from a compare between two branches with 380 files changed. The files at the beginning of the diff log have their diffs visualized but at a certain point down the page it stops visualizing the diffs. I understand you don't want massive pages but I can't seem to find a way to view a file's diff individually. Instead I have to check these both out locally

XML Diff and Merge

由 孤街醉人 提交于 2019-11-27 04:17:02
问题 I think i have a rather unique problem to solve. Well, i cant find enough information using Google. So here it goes, I work on a Java EE SOA application which stores XML documents as XML using Oracle XML DB. Whenever the XML changes, i increment the version and throw the previous version into a different table. The requirement now is, I should store the differences between 2 versions as XML, instead of the whole XML document. Is there any Java library which can do XML comparison? (XMLUnit, ..

How should I use git diff for long lines?

由 余生颓废 提交于 2019-11-27 04:09:07
问题 I'm running git-diff on a file, but the change is at the end of a long line. If I use cursor keys to move right, it loses colour-coding—and worse the lines don't line up—making it harder to track the change. Is there a way to prevent that problem or to simply make the lines wrap instead? I'm running Git 1.5.5 via mingw32. 回答1: The display of the output of git diff is handled by whatever pager you are using. Commonly, under Linux, less would be used. You can tell git to use a different pager

.NET Assembly Diff / Compare Tool - What's available? [closed]

由 落花浮王杯 提交于 2019-11-27 04:06:09
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'd like to be able to do a code-level diff between two assemblies; the Diff plug-in for Reflector is the closest thing I've found so far, but to compare the entire assembly is a manual process requiring me to drill-down into every namespace/class/method. The other tools I've found so far appear to be limited to

Compare XML snippets?

由 风流意气都作罢 提交于 2019-11-27 04:02:50
Building on another SO question , how can one check whether two well-formed XML snippets are semantically equal. All I need is "equal" or not, since I'm using this for unit tests. In the system I want, these would be equal (note the order of 'start' and 'end'): <?xml version='1.0' encoding='utf-8' standalone='yes'?> <Stats start="1275955200" end="1276041599"> </Stats> # Reordered start and end <?xml version='1.0' encoding='utf-8' standalone='yes'?> <Stats end="1276041599" start="1275955200" > </Stats> I have lmxl and other tools at my disposal, and a simple function that only allows reordering

How can I visualize per-character differences in a unified diff file?

由 家住魔仙堡 提交于 2019-11-27 03:58:34
问题 Say I get a patch created with git format-patch . The file is basically a unified diff with some metadata. If I open the file in Vim, I can see which lines have been modified, but I cannot see which characters in the changed lines differ. Does anyone know a way (in Vim, or some other free software that runs on Ubuntu) to visualize per-character differences? A counter example where per-character diff is visualized is when executing vimdiff a b . update Fri Nov 12 22:36:23 UTC 2010 diffpatch is
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