contains

问题 I found similar questions, but -containsObject is not working like I expect. My problem is the NSMutableArray -containsObject method returns true when it shouldn't, when trying to generate random UNIQUE colors and add to an array. What is the best way to check if NSMutableArray contains an object with same values. NSMutableArray *color_arr=[NSMutableArray array]; UIColor *t; for(int i=0; i<100; i+=1) { int r = arc4random()%256; int g = arc4random()%256; int b = arc4random()%256; t=[UIColor

问题 Recently I started to analyse a data frame and I want to remove all the substrings that don't contain ('Aparelho Celular','Internet (Serviços e Produtos)','Serviços Telefônicos Diversos','Telefonia Celular','Telefonia Comunitária ( PABX, DDR, Etc. )','Telefonia Fixa','TV por Assinatura','Televisão / Aparelho DVD / Filmadora','Telemarketing') But when I use this syntax- df = df[~df["GrupoAssunto"].str.contains('Aparelho Celular','Internet (Serviços e Produtos)','Serviços Telefônicos Diversos',

问题 Recently I started to analyse a data frame and I want to remove all the substrings that don't contain ('Aparelho Celular','Internet (Serviços e Produtos)','Serviços Telefônicos Diversos','Telefonia Celular','Telefonia Comunitária ( PABX, DDR, Etc. )','Telefonia Fixa','TV por Assinatura','Televisão / Aparelho DVD / Filmadora','Telemarketing') But when I use this syntax- df = df[~df["GrupoAssunto"].str.contains('Aparelho Celular','Internet (Serviços e Produtos)','Serviços Telefônicos Diversos',

问题 I have a list of float s and want to check if it already contains a particular value with the List.Contains() method. I know that for float equality tests you often can't use == but something like myFloat - value < 0.001 . My question is, does the Contains method account for this or I do I need to use a method that accounts for float precision errors for testing if the float is in the list? 回答1: From the docs for List(T).Contains: This method determines equality by using the default equality

问题 I want to return the corresponding matched keyword that is contained in Column A, but I dont know the Excel query to be used. Please can you help? The details are as follows: Column A - List of Firms I need to match the Keywords Against (Column C) Column B - If the list of Keywords match the cell in Column A return the Matching value here Column C - Match these keywords to text in Column A, I am looking for a contains match rather than a Exact Match Here is the file in question: https://www

问题 I have SQL script as below for querying my ContactInfoes table SELECT * FROM ContactInfoes WHERE CONTAINS(Name, 'The') I am getting only empty result set. I have an entry in my table with Name 'The Company'. Why I am not getting any data here and how this can be resolved. Any help is appreciated. I am using SQL Server 2019 回答1: You have created FULLTEXT index without specifying STOPLIST. Thus, the default STOPLIST was used. By default the word 'the' is the stop word, that removed from your

问题 im running this in asp.net core v3.1 my question is similar to this question: How to use Linq to check if a list of strings contains any string in a list with the specific question relating to the first answer such that filterTags = ["abc", "cd", "efg"] var results = db.People .Where(p => filterTags.Any(tag => p.Tags.Contains(tag))); so basically saying give me results from the db of all People who's Tags field contains any of the filterTags where Tags = a big text field populated by a bunch

问题 This question already has answers here : An integer array as a key for Dictionary (3 answers) Closed 6 months ago . If I have a Dictionary<int[], int> , which contains 2 entries {1, 2, 3} , 1 and {4, 5, 6} , 2 How do I check whether the dictionary contains the key {1, 2, 3} ? If i do: if (dictionary.ContainsKey(new int[] {1,2,3}) { // do things } It will not return the correct result as the created array is different from the key array. I know you can override the Equals method for a custom

问题 I am trying to check if list that consists of int[2] arrays contains certain element. In short, why this produces false? And how can I check this properly? List < int[] > ngonPairs = new List<int[]> {new int[2] { 0, 1 }}; bool flag = ngonPairs.Contains(new int[2] { 0, 1 }); Flag is always false. 回答1: This is because new[]{1, 2} != new[]{1, 2} They are different arrays, and changes to one won't be reflected in the other. However using LINQ's SequenceEqual , you can compare the contents of two

问题 I'm working with a dataset that has many columns called status1, status2, etc. Within those columns, it says if someone is exempt, complete, registered, etc. Unfortunately, the exempt inputs are not consistent; here's a sample: library(dplyr) problem <- tibble(person = c("Corey", "Sibley", "Justin", "Ruth"), status1 = c("7EXEMPT", "Completed", "Completed", "Pending"), status2 = c("exempt", "Completed", "Completed", "Pending"), status3 = c("EXEMPTED", "Completed", "Completed", "ExempT - 14"))