object

问题 //listen for messages channel.on("messageAdded", function (message) { //render new message console.log("New awesome message", message) //this is null for some reason console.log("Stringify 3",JSON.stringify(message.state.aggregatedDeliveryReceipt)) } But by storing it as a global object via console right click, I am able to do a console.log(temp1.state.aggregatedDeliveryReceipt) and get back The problem is that, when I use the same state.aggregatedDeliveryReceipt on my JS file, I am unable to

问题 //listen for messages channel.on("messageAdded", function (message) { //render new message console.log("New awesome message", message) //this is null for some reason console.log("Stringify 3",JSON.stringify(message.state.aggregatedDeliveryReceipt)) } But by storing it as a global object via console right click, I am able to do a console.log(temp1.state.aggregatedDeliveryReceipt) and get back The problem is that, when I use the same state.aggregatedDeliveryReceipt on my JS file, I am unable to

问题 i'm trying to use includes to see if an object is inside the array like so: arr=[{name:'Dan',id:2}] and I want to check like so: arr.includes({name:'Dan',id:2}) and this returns false, is there a way to do that? 回答1: does include works with array of objects? Yes — if you use the same object as the argument to includes that's in the array: const obj = {name: "Dan", id: 2}; const arr = [{name: "T.J.", id: 42}, obj, {name: "Joe", id: 3}]; console.log(arr.includes(obj)); // true console.log(arr

问题 I have such an Object freq = { a: 50, r: 25, m: 25 } I want to convert it to this Array-Object like thing dps = [ { label: "a", y: 50 }, { label: "r", y: 25 }, { label: "m", y: 25 } ]; This is for creating a Chart with canvas. 回答1: You could take the entries of the object and take a destructuring assignment for the key/value pairs and map new objects with short hand properties. var freq = { a: 50, r: 25, m: 25 }, dps = Object.entries(freq).map(([label, y]) => ({ label, y })); console.log(dps)

问题 I am just started getting into classes and understand the basic concept however I don't understand why it gives me this error. My code: import pygame pygame.init() screen = pygame.display.set_mode((400, 300)) done = False while not done: for event in pygame.event.get(): if event.type == pygame.QUIT: done = True class shape(): def __init__(self, place, colour, x, y): self.place = place self.colour = colour self.x = x self.y = y class rectangle(shape): def __init__(self, place, colour, x, y,

问题 I am just started getting into classes and understand the basic concept however I don't understand why it gives me this error. My code: import pygame pygame.init() screen = pygame.display.set_mode((400, 300)) done = False while not done: for event in pygame.event.get(): if event.type == pygame.QUIT: done = True class shape(): def __init__(self, place, colour, x, y): self.place = place self.colour = colour self.x = x self.y = y class rectangle(shape): def __init__(self, place, colour, x, y,

问题 I need my sprite to appear in the pygame window. How do I do this? Important code: #This will be a list that will contain all the sprites we intend to use in our game. all_sprites_list = pygame.sprite.Group() #creating the player player = player(BLUE, 60, 80, 70) player.rect.x = 200 player.rect.y = 300 At the end of the code I have pygame.display.update() . My sprite class (correctly imported): class player(pygame.sprite.Sprite): def __init__(self, color, width, height, speed): # Call the

问题 I'm trying to count the number of objects created but it always returns 1. public class Drivertwo { public static void main(String[] args) { Employee newEmp = new Employee(); Employee newEmp2 = new Employee(); Calculate newcal = new Calculate(); Clerk newclerk = new Clerk(); float x; int y; newEmp.setEmp_no(2300); newEmp.setEmp_name("W.Shane"); newEmp.setSalary(30000); newEmp.counter(); newEmp2.setEmp_no(1300); newEmp2.setEmp_name("W.Shane"); newEmp2.setSalary(50000); newEmp2.counter();

问题 I have checked this page : mozilla documentation I dont understand why the index 0 with : const object3 = { 100: 'a', 2: 'b', 7: 'c' }; console.log(Object.entries(object3)[0]); // expected output: Array ["100", "a"] <== i thought of this instead the documentation says you get : // expected output: Array ["2", "b"] Someone can explain it why ? 回答1: The Docs say that Object.entries returns an array of given objects enumerable property [key,value] pairs . So yes its confusing if you look at this

问题 I have checked this page : mozilla documentation I dont understand why the index 0 with : const object3 = { 100: 'a', 2: 'b', 7: 'c' }; console.log(Object.entries(object3)[0]); // expected output: Array ["100", "a"] <== i thought of this instead the documentation says you get : // expected output: Array ["2", "b"] Someone can explain it why ? 回答1: The Docs say that Object.entries returns an array of given objects enumerable property [key,value] pairs . So yes its confusing if you look at this