contains

问题 Without a for loop , is there any way to see if a value exists in a multidimensional array ? I found Arrays.asList(*ArrayName*).contains(*itemToFind*) but that will only search the first dimension of the array, and I need to search 2 dimensions. 回答1: I created an 5x5 Integer array and intialized with value i*j. Exists method takes a row number and value to search for. private static Integer[][] myarray = new Integer[5][5]; public static boolean exists(int row, int value) { if(row >= myarray

问题 I have an HTMLElementCollection that I'm going through using a For Each Loop to see if the InnerHTML contains certain words. If they do contain any of those keywords it gets saved into a file. Everything works fine but I was wondering if there is a way to simplify. Here's a sample For Each Helement As HtmlElement In elements If Helement.InnerHtml.Contains("keyword1") Or Helement.InnerHtml.Contains("keyword2") Or Helement.InnerHtml.Contains("keyword3") Or Helement.InnerHtml.Contains("keyword4"

问题 If I have a (reference - does it matter?) type MyType which does not override the Equals method, what heuristics will be used when determining if an ICollection<MyType> contains a given instance of the type? What's the best way to use my own heuristics (e.g. check for the equality of the Id property value)? 回答1: Because your type doesn't override Equals, the default implementation of Equals will be used, i.e. reference equality. So Contains will be true if the collection contains that very

问题 I have this program and in the main method I add a value into a linked list. When I try to add another value through a method that checks to see if the value added previously is in the list, it does not recognize the value as being in the list and does the operation it should do if it is not in the list. Why is this program not recognizing the objects that are put into the list? the program does not recognize "h" has been added to the list. import java.util.LinkedList; import java.util.List;

问题 Here's my quandary. I have a variable that contains a paragraph of text, and I have a column full of keywords. I want to search each of the keywords contained in the column against the entirety of the text contained within my variable. The only way that I know how to do this is to select each row of the column one at a time, and then use the LIKE operator with wildcards on each side to see if the keyword from the column is found anywhere in the text within the variable. Every way that I try

问题 Here's my quandary. I have a variable that contains a paragraph of text, and I have a column full of keywords. I want to search each of the keywords contained in the column against the entirety of the text contained within my variable. The only way that I know how to do this is to select each row of the column one at a time, and then use the LIKE operator with wildcards on each side to see if the keyword from the column is found anywhere in the text within the variable. Every way that I try

问题 This question already has answers here : Swift: Check String if it has an element in an Array (2 answers) Closed 4 years ago . How do I check if a specific string: String contains a certain character: Character ? 回答1: string.characters.contains(character) Example: let string = "Hello, World!" let character: Character = "e" if string.characters.contains(character) { print("\(string) contains \(character).") } else { print("\(string) doesn't contain \(character).") } 回答2: let char: Character =

问题 I am trying to use org.hamcrest.Matchers.contains(java.util.List<Matcher<? super E>>), but the compiler tells me that it cannot resolve the method. I even tried the example given by Hamcrest here, but I get the same compilation error: assertThat(Arrays.asList("foo", "bar"), contains(Arrays.asList(equalTo("foo"), equalTo("bar")))); Error:(13, 9) java: no suitable method found for assertThat(java.util.List<java.lang.String>,org.hamcrest.Matcher<java.lang.Iterable<? extends java.util.List<org

问题 My aim is to find City that matches row from column general_text , but the match must be exact. I was trying to use searching IN but it doesn't give me expected results, so I've tried to use str.contain but the way I try to do it shows me an error. Any hints on how to do it properly or efficient? I have tried code based on Filtering out rows that have a string field contained in one of the rows of another column of strings df['matched'] = df.apply(lambda x: x.City in x.general_text, axis=1)

问题 I have two list as below: List<Category> categories; List<Category> selectedCategories; and model of Category: (id,catTitle,catId) but I want to compare two list when: selectedCategories:[{id=3, catTitle='first', catId=17},{id=4, catTitle='second', catId=18}] categories: [{id=null, catTitle='first', catId=17} and get {id=3,catTitle='first',catId=17} but when id is null how to have {id=3,catTitle='first',catId=17} as result?!!! 回答1: pubic class Category { Integer id; int catId; String catTitle