WebQuery an Array for an Element To query if the array field contains at least one element with the specified value, use the filter { : } where is the element value. The following example queries for all documents where tags is an array that contains the string "red" as one of its elements: WebOct 7, 2016 · If stringArray contains a large number of varied length strings, consider using a Trie to store and search the string array. public static class Extensions { public static bool ContainsAny (this string stringToCheck, IEnumerable stringArray) { Trie trie = …
c# - Does an index of this array exist? - Stack Overflow
WebAug 17, 2013 · If it returns a value > 0, the substring was found: 1 return (strToSearch.Length - strToSearch.Replace(strKeyToLookFor, String.Empty).Length) / strKeyToLookFor.Length; Otherwise, if you don’t mind code running ever so slightly slower and want easy code readability, C#’s native String.Contains () method is the way to go. WebFeb 14, 2014 · The basic code I used is as follows: ConnectionInfo.GetConnectionInfos () is my list creation methodology. if (ConnectionInfo.GetConnectionInfos ().Any (info => … how far down is titanic
Query an Array — MongoDB Manual
WebJun 21, 2012 · string [] names = {"P","A","B","G","F","K","R"} I have another array : string [] subnames= {"P","G","O"} How can we check whether names array has any elements of … WebMar 31, 2024 · We can use this to search an array by value. Argument 1 The first argument to Array.IndexOf is the array we are trying to search. Argument 2 Here we specify the value we are trying to find in the array. We try find the index of the string "dog." Warning IndexOf methods return -1 when no element is found. WebTo check if all values in an array are equal in C#, you can use the All extension method from the LINQ library. Here's an example: arduinoint[] myArray = { 1, 1, 1, 1 }; bool allEqual = myArray.All(x => x == myArray[0]); . In this example, we create an integer array myArray with four elements, all with the value of 1.We then use the All method to check if all … how far down is your eardrum