object

问题 I'm trying to obtain an average value for scores arrays and leave other values from the first object. I can't manage how to loop through the objects to achieve expected output. const bigArr = [ { bigDummyData: "string0", examples: [ { smallDD: "string00", scores: [1, 1, 5] }, { smallDD: "string01", scores: [2, 2, 4] }, { smallDD: "string02", scores: [2, 2, 6] }, ], }, { bigDummyData: "string1", examples: [ { smallDD: "string10", scores: [3, 3, 3] }, { smallDD: "string11", scores: [2, 2, 2] },

问题 its easier to explain in code so here Object anObj; anObj = new MyObj(); anObj = new Rectangle(); anObj.clone();//this doesnt exist because its on the root Object class what can i use instead of the Object.clone() method in this example? ----------------------- extra info ------------------------------ I have added extra info but it seems to have gone in the middle of all the answers, so here it is again so it can be read. Hi all these are all really helpful on topic of cloning or copying,

问题 I am having trouble sorting out the undefined from the array of objects that was crated from local storage. Lets assume that this array of of objects is localStorage: var arrObject = [{date: undefined, bus_name: Thomas #1};...] Assume this has 2 dates that had undefined. I want to be able to filter out the date that has undefined and the bus_name that is within the date so for example, if I used filter for an array of objects before sorting them, then {date: undefined, bus_name: Thomas #1}

问题 I am building a classical Nim game using only the array , and I found there is a bug after testing. If I successfully create a player, I'll assign a new object to the array. However, when removing the player in the array, I filter the array with non-null objects because I have other functions such as editplayer , displayplayer to iterate the entire array without NullPointerException . And there is a chance that this happens: addplayer → removeplayer → addplayer . It means I'll always get

问题 I want to define the type of an Object literal, with key valye pairs, like below. In any way can't manage this. Please help. export const endPoints: {name: string: {method: string; url: string;}} = { allFeed: { method: 'GET', url: 'https://www.yammer.com/api/v1/messages.json' }, topFeed: { method: 'GET', url: 'https://www.yammer.com/api/v1/messages/algo.json' }, followingFeed: { method: 'GET', url: 'https://www.yammer.com/api/v1/messages/following.json' }, defaultFeed: { method: 'GET', url:

问题 I have the array of people below: const FIRST_ARRAY = [ { name: 'Simon', age: 32, occupation: 'Student' }, { name: 'Vera', age: 22, occupation: 'Developer' } ]; I would like to filter the array to produce a separate array based on a 'filters' object. For example if my filters are: const FILTERS = { age: 32, name: 'John', occupation: '' }; The new array should be empty as no people in the array have the combination of 32 and John. However if my filters are: const FILTERS = { age: 32, name:

问题 public class Dashboard { int REQUEST_ID, PRICE, PROCESSED; String LOGIN_USER; public int getREQUEST_ID() { return REQUEST_ID; } public void setREQUEST_ID(int rEQUEST_ID) { REQUEST_ID = rEQUEST_ID; } //all getters and setters public class DBConnection { public ArrayList<Dashboard> getStoreResult() { ArrayList<Dashboard> dashRec; try{ Class.forName(""); Connection con=DriverManager.getConnection(""); Statement st=con.createStatement(); ResultSet rs=st.executeQuery(""); HashMap<Object, List

问题 I have the array of people below: const FIRST_ARRAY = [ { name: 'Simon', age: 32, occupation: 'Student' }, { name: 'Vera', age: 22, occupation: 'Developer' } ]; I would like to filter the array to produce a separate array based on a 'filters' object. For example if my filters are: const FILTERS = { age: 32, name: 'John', occupation: '' }; The new array should be empty as no people in the array have the combination of 32 and John. However if my filters are: const FILTERS = { age: 32, name:

问题 with the knowledge that similar cases have been answered several times I couldn't make it work anyway. sample data: 10 5 20 5 6 after i figured out that with: df = df['column_name'].astype(str).astype(int) it would work if there wasn't nans in the input data. error: invalid literal for int() with base 10: 'nan' Also I did try to use float instead but it gives an error as well error: could not convert string to float what am I missing? output can be anything with "null", "nan", "" for example:

问题 public class Dashboard { int REQUEST_ID, PRICE, Status; String LOGIN_USER; public int getREQUEST_ID() { return REQUEST_ID; } public void setREQUEST_ID(int rEQUEST_ID) { REQUEST_ID = rEQUEST_ID; } //all getters and setters public class MapKey { private Integer id; private String name; public MapKey(Integer id, String name) { this.id = id; this.name = name; } @Override Hashcode and equals public class DBConnection { public ArrayList<Dashboard> getStoreResult() { ArrayList<Dashboard> dashRec;