For general string comparisons, strcmp is the appropriate function. You should use strncmp to only compare some number of characters from a string (for example, a prefix), and memcmp to compare blocks of memory. That said, since you’re using C++, you should avoid this altogether and use the std::string class, which is much easier to … Read more
Comparing std::string -s like that will work. However you are comparing string literals. To do the comparison you want either initialize a std::string with them or use strcmp: if(std::string(“aa”) > std::string(“bz”)) cout<<“Yes”; This is the c++ style solution to that. Or alternatively: if(strcmp(“aa”, “bz”) > 0) cout<<“Yes”; EDIT(thanks to Konrad Rudolph’s comment): in fact in … Read more
I don’t have a Javascript implementation on hand per se, but you’re doing something for which well-established algorithms exist. Specifically, I believe you’re looking for the “Levenshtein distance” between two strings — i.e. the number of insertions, substitutions and deletions (assuming you are treating a deletion as a change). The wikipedia page for Levenshtein distance … Read more
The low level way: from __future__ import with_statement with open(filename1) as f1: with open(filename2) as f2: if f1.read() == f2.read(): … The high level way: import filecmp if filecmp.cmp(filename1, filename2, shallow=False): …
Typically this is accomplished by finding the Longest Common Subsequence (commonly called the LCS problem). This is how tools like diff work. Of course, diff is a line-oriented tool, and it sounds like your needs are somewhat different. However, I’m assuming that you’ve already constructed some way to compare words and sentences.
Because there is no such tool available that we have written one. You can download the i-net PDF content comparer and use it. I hope that help other with the same problem. If you have problems with it or you have feedback for us then you can contact our support.
You can invoke devenv.exe /diff list1.txt list2.txt from the Visual Studio Developer Command Prompt or, if a Visual Studio instance is already running, you can type Tools.DiffFiles in the Command window, with a handy file name completion:
This appears to work String mostRecentVersion(List versions) { def sorted = versions.sort(false) { a, b -> List verA = a.tokenize(‘.’) List verB = b.tokenize(‘.’) def commonIndices = Math.min(verA.size(), verB.size()) for (int i = 0; i < commonIndices; ++i) { def numA = verA[i].toInteger() def numB = verB[i].toInteger() if (numA != numB) { return numA <=> … Read more
google-diff-match-patch The Diff Match and Patch libraries offer robust algorithms to perform the operations required for synchronizing plain text. Diff: Compare two blocks of plain text and efficiently return a list of differences. Match: Given a search string, find its best fuzzy match in a block of plain text. Weighted for both accuracy and location. … Read more
Since Date implements Comparable<Date>, it is as easy as: date1.compareTo(date2); As the Comparable contract stipulates, it will return a negative integer/zero/positive integer if date1 is considered less than/the same as/greater than date2 respectively (ie, before/same/after in this case). Note that Date has also .after() and .before() methods which will return booleans instead.