Binary collation compares your string exactly as strcmp() in C would do, if characters are different (be it just case or diacritics difference). The downside of it that the sort order is not natural. An example of unnatural sort order (as in “binary” is) : A,B,a,b Natural sort order would be in this case e.g … Read more
static class LevenshteinDistance { public static int Compute(string s, string t) { if (string.IsNullOrEmpty(s)) { if (string.IsNullOrEmpty(t)) return 0; return t.Length; } if (string.IsNullOrEmpty(t)) { return s.Length; } int n = s.Length; int m = t.Length; int[,] d = new int[n + 1, m + 1]; // initialize the top and right of the table … Read more
Use std::mismatch. Pass in the shorter string as the first iterator range and the longer as the second iterator range. The return is a pair of iterators, the first is the iterator in the first range and the second, in the second rage. If the first is end of the first range, then you know … Read more
Python (like Java, C, C++, .NET) uses string pooling / interning. The interpreter realises that “hello” is the same as “hello”, so it optimizes and uses the same location in memory. Another goodie: “hell” + “o” is “hello” ==> True
You want to do $arrayOfString[0].Title -eq $myPbiject.item(0).Title -match is for regex matching ( the second argument is a regex )
You could use the Levenshtein Distance algorithm. “The Levenshtein distance between two strings is defined as the minimum number of edits needed to transform one string into the other, with the allowable edit operations being insertion, deletion, or substitution of a single character.” – Wikipedia.com This one is from dotnetperls.com: using System; /// <summary> /// … Read more
select * where email ilike ‘me@example.com’ ilike is similar to like but case insensitive. For escape character use replace() where email ilike replace(replace(replace($1, ‘~’, ‘~~’), ‘%’, ‘~%’), ‘_’, ‘~_’) escape ‘~’ or you could create a function to escape text; for array of text use where email ilike any(array[‘adamB@a.com’, ‘eveA@b.com’])
Great question. I’m an engineer at SeatGeek, so I think I can help here. We have a great blog post that explains the differences quite well, but I can summarize and offer some insight into how we use the different types. Overview Under the hood each of the four methods calculate the edit distance between … Read more
What you’re looking for are called String Metric algorithms. There a significant number of them, many with similar characteristics. Among the more popular: Levenshtein Distance : The minimum number of single-character edits required to change one word into the other. Strings do not have to be the same length Hamming Distance : The number of … Read more
The reason why == works is because of pointer comparison. When you define a constant NSString using @””, the compiler uniquifies the reference. When the same constants are defined in other places in your code, they will all point to the same actual location in memory. When comparing NSString instances, you should use the isEqualToString: … Read more