object

问题 I have code: let a = {a: 'a', b: 'b'}; let b = {c: 'c', d: 'd'}; let c = {...a, ...b}; In chrome / firefox /... its display: c = {a: 'a', b: 'b', c: 'c', d: 'd'} , but in microsoft edge its trow error Expected identifier, string or number . I try to use cdn.polyfill.io and https://babeljs.io/docs/en/babel-polyfill but no luck. What i can do to run my webpack code in microsoft edge ? 回答1: The { ...obj } syntax is called "Object Rest/Spread Properties" and it's a part of ECMAScript 2018 which

问题 How to convert Object to List (array bytes) I have instance (some object) from class MyClass and I want to get bytes from this object. How implement this? Code: class MyClass {} var myClass = MyClass() List<int> getBytesFromObject(Object object) { ??? what here should be ??? } so I can use it like: List<int> bytes = getBytesFromObject(myClass) 回答1: There are no builtin way to serialize Dart objects to binary. But you can convert Dart objects into JSON string and convert this string into a

问题 I'm trying so get the number of items in the array inside this piece JSON { "collection" : [ { "item": "apple" }, { "item": "banana" }] } Using the following JS (NodeJS) : Updated with answers from user 'elssar' var data = JSON.parse(fs.readFileSync(filePath)); console.log(data.collection.length); Expected result: 2 Without specifying the encoding data will be a buffer instead of string (thanks to user nils). JSON.parse should work for both. Now I'm getting an error Unexpected token ? at

问题 I would like to know how to get the properties of my dynamic type. This is the function to get the List, var result = _files.GetFileContent(reportId).Result; As example I get an object returned like this : When I open it, you can see the properties I have : The Idea is that I never know the properties. They can change over time. So I want a list which is filled with all the properties. So I can dynamically use them. How Can I get the properties from the first item (ChargesDelta_DIFF_5,

问题 I have a json object as shown below. where i want to delete the "otherIndustry" entry and its value by using below code which doesn't worked. var updatedjsonobj = delete myjsonobj['otherIndustry']; How to remove Json object specific key and its value. Below is my example json object where i want to remove "otherIndustry" key and its value. var myjsonobj = { "employeeid": "160915848", "firstName": "tet", "lastName": "test", "email": "test@email.com", "country": "Brasil", "currentIndustry":

问题 I have a json object as shown below. where i want to delete the "otherIndustry" entry and its value by using below code which doesn't worked. var updatedjsonobj = delete myjsonobj['otherIndustry']; How to remove Json object specific key and its value. Below is my example json object where i want to remove "otherIndustry" key and its value. var myjsonobj = { "employeeid": "160915848", "firstName": "tet", "lastName": "test", "email": "test@email.com", "country": "Brasil", "currentIndustry":

问题 I have two identical objects with me let a = { title : "developer”, startDate:{ month :’jan’} } let b = { title :{ value: "" } , startDate :{month:{value:””}} } i need to merge dynamically these two to get object like below let c = { title :{ value: "developer" } , startDate:{ month:{ value:” jan”}} } 回答1: You don't require object b because it's just a replica of object a with extra 'value' property. You can traverse the complete a object and then deep copy the value in the b object. I wrote

问题 I would like to create objects of class Training and create multiple processes which call the print() function. I have a class Training : class Training(): def __init__(self, param1, param2): self.param1 = param1 self.param2 = param2 def print(self): print(self.param1) print(self.param2) I have tried to use the starmap function to create 5 processes in the following way: import multiprocessing as mp num_devices = 5 func_args = [] for i in range (0, num_devices): func_args.append((i, i*10))

问题 The person building a WP site for me is stuck for some time now with this problem. He needs to attach some custom PDF files into the order confirmation mail. He uses woocommerce_emails_attach_downloadables function to do that. For some reason that function is getting called with the $order parameter being empty. Here is the code he uses : add_filter( 'woocommerce_email_attachments', 'attach_order_notice', 10, 3 ); function attach_order_notice ( $attachments, $email_id, $order ) { // // Only

问题 I want to write a function that checks if an object has at least one value containing a substring. Something like this (pseudo-code): const userMatchesText = (text, user) => user.includes(text); The full structure of my objects ( So, for a user like the following: const user = { id: '123abc', info: { age: 12, bio: 'This is my bio' }, social: { chatName: 'Chris', friends: ['friend1', 'other friend'], blocks: ['Creep'] } //Etc. The objects I'm working with contain nested objects and arrays, etc