contains

问题 I'm having trouble understanding how to properly set up a contains method in my class. I know it automatically uses the operator "in" when you call it, i just don't think I understand how to set it up correctly. I have to use it to see if anotherCircle is contained within a specific circle (both input from the user). The prof had us do two different types of methods for this. The first one I have no problems with and more or less understand what it is doing, It is as follows: def contains

问题 I am trying to read out scripts through C# and determine if they contain certain words, but these words should be identical to instead of only containing what I'm looking for. Is there a way to use the contains -function, single out the word, and check if it is identical to the exact word? How can I determine if it both contains and is identical to the search term? Currently I am using the following script: // GetScriptAssetsOfType<MonoBehaviour>() Returns all monobehaviour scripts as text

问题 The doc about java.util.Set.contains(Object o) says: Returns true if and only if this set contains an element e such that (o==null ? e==null : o.equals(e)). That said, here is a POJO (as you can see, I overwrote its equals method): public class MonthAndDay { private int month; private int day; public MonthAndDay(int month, int day) { this.month = month; this.day = day; } @Override public boolean equals(Object obj) { MonthAndDay monthAndDay = (MonthAndDay) obj; return monthAndDay.month ==

问题 I want to use a structure in which I insert integers, and then can ask if (container.contains(3)) { /**/ } There has to be something like this. 回答1: You can use std::vector . std::vector<int> myVec; myVec.push_back(3); if (std::find(myVec.begin(), myVec.end(), 3) != myVec.end()) { // do your stuff } You can even make a little helper function: template <class T> bool contains(const std::vector<T> &vec, const T &value) { return std::find(vec.begin(), vec.end(), value) != vec.end(); } Here is

问题 Lets say I have a student table and I want to display the student with ID 1. SELECT * FROM STUDENT ST WHERE ST.ID = 1 This is how I achive this in Linq. StudentQuery = from r in oStudentDataTable.AsEnumerable() where (r.Field<int>("ID") == 1) select r; oStudentDataTable = StudentQuery.CopyToDataTable(); but what if I want to display the students with these ids 1,2,3,4,5.. SELECT * FROM STUDENT ST WHERE ST.ID IN (1,2,3,4,5) How can I achieve this in Linq? 回答1: Use .Contains var list = new List

问题 I have these divs <div id="content" style="display:none">**Content1 goes here**</div> <div id="content" style="display:none">Content2 goes here</div> <div id="content" style="display:none">Content3 goes here</div> <div id="content" style="display:none">Content4 goes here</div> <div id="content" style="display:none">**Content1 goes here too**</div> <div id="content" style="display:none">**Content1 goes here again**</div> <div id="content" style="display:none">Content4 goes here part 2</div> I

问题 My initial question was: why does in C++ the contains() function miss in Containers ? So I looked for an explanation and I found something interesting about why some other function are not implemented in all the Containers (essentially because of performance issues and convenience). I know that you can use the find function from algorithm library or you can just write your own function with Iterator , but what I can't understand is why in set , for example, the contains function(where it's

问题 Trying to do something if the input value contains a certain word but this doesn't work: var formMain = $('#MainForm :input[name="Search"]'); if ((formMain).value.indexOf('word') >= 0) { alert('HAS THIS WORD IN IT!'); Example Form: <form onsubmit="return OnSubmitSearchForm(event, this);" action="/searchresults.asp" id="MainForm" name="MainForm" method="post" class="search_results_section"> <input type="hidden" value="word" name="Search"> <input type="hidden" value="" name="Cat"> </form> 回答1:

问题 I have an ArrayList of objects of my custom class. I would like to know, if ArrayList contains object with certain attribute. I do not care about the object, just if there is some. Yes, I could do this with foreach cycle, but I was wondering if there was more elegant way to do so. Thanks for suggestions. 回答1: Well, to start with I'd suggest using List<T> instead of ArrayList . Then LINQ to Objects makes it really easy: if (list.Any(x => x.HasFoo)) { } Or without LINQ (but still List<T> ) if

问题 I am trying to test if a point lies within a circle and if the point is on the perimeter, it should be included in the results. However, Java's contains() implementation uses less than instead of less than or equal to. For example consider this snippet: Ellipse2D.Double circle = new Ellipse2D.Double(0, 0, 100, 100); System.out.println(circle.contains(50, 0)); System.out.println(circle.contains(50, 100)); System.out.println(circle.contains(0, 50)); System.out.println(circle.contains(100, 50));