object

问题 I have a a object that when I'm printing that it's returning Promise <Pending> (I've checked the type of getRateable and it is object) getRateable = getRateableEntitiesTx(tx, hashtagList); I can't have access to the value by this : getRateableEntitiesTx(tx, hashtagList).then((res) => {return res}) If it's a Promise why it's not returning the res properly? Thanks in advance for help 回答1: You can't return the value from an async function because the function returns before the value has been

问题 I have a property that is actually a Dictionary. And I keep many types in this dictionary like TimeSpans, DateTimes, etc. But serializing and deserializing TimeSpans are wrong and it deserializes as string. var dict = new Dictionary<string, object>(); dict.Add("int", 15); dict.Add("string", "foo"); dict.Add("timeSpan", new TimeSpan(1,1,1)); dict.Add("dateTime", DateTime.Now); var settings = new JsonSerializerSettings{ TypeNameHandling = TypeNameHandling.All, TypeNameAssemblyFormat =

问题 [{name: "mode", value: "1"},{name: "group", value: ""},{name: "from_date", value: ""},{name: "to_date", value: "2018-10-16"},{name: "action", value: "ac_filter_transactions"} This is how my array looks like. I want to remove the name and value pair from the array if the value is empty. I tried this solution: but this didn't work formData.map((i) => { (i.value == "") ? delete i: ""; }); I know this is a simple question but I couldn't find any relevant example to solve this problem. All

问题 This question already has answers here : What is abstraction? [closed] (4 answers) Closed 1 year ago . I am confused in between many definitions of abstraction. can any one tell me what is abstraction and how can we achieve it ? 回答1: Abstraction in OOP theory consists in retaining only the relevant aspects of a real world object for a specific problem . Thus we talk about abstraction of the reality . It's a reduction . For example, in the real world we have cats and dogs that are vertebrate

问题 I need to create a new multiple instance of objects for the Pojo class in drools decision table. I have implemented using two facts Student fact and subject fact class. I need to fire all the rules in the decision table and I need to add all the values into array-list of the objects. But I'm getting only last rule values of decision table. It seems like decision table values are getting overridden. Fact 1 Class StudentFact{ private int id; private String name; private List<SubejctFact>

问题 I need to create a new multiple instance of objects for the Pojo class in drools decision table. I have implemented using two facts Student fact and subject fact class. I need to fire all the rules in the decision table and I need to add all the values into array-list of the objects. But I'm getting only last rule values of decision table. It seems like decision table values are getting overridden. Fact 1 Class StudentFact{ private int id; private String name; private List<SubejctFact>

问题 Hey I'm a beginner programmer who is starting with python and am starting out by making a game in pygames. The game basically spawns in circles at random positions, and when clicked give you points. Recently i've hit a roadblock when I want to spawn in multiple instances of the same object(in this case circles) at the same time. I've tried stuff like sleep() and some other code related to counters, but it always results in the next circle spawned overriding the previous one(i.e the program

问题 Hey I'm a beginner programmer who is starting with python and am starting out by making a game in pygames. The game basically spawns in circles at random positions, and when clicked give you points. Recently i've hit a roadblock when I want to spawn in multiple instances of the same object(in this case circles) at the same time. I've tried stuff like sleep() and some other code related to counters, but it always results in the next circle spawned overriding the previous one(i.e the program

问题 This question already has answers here : Filter array of objects with another array of objects (9 answers) Closed 5 months ago . I'm new to Javascript and I'm struggling with how to use the map, filter, find and other functions. I have two arrays of objects, and I wanted to filter the first one with the second. const users = [ { name: 'Anna', age: 22, gender: 'F' }, { name: 'John', age: 25, gender: 'M' }, { name: 'Mary', age: 27, gender: 'F' }, { name: 'Joe', age: 30, gender: 'M' } ] const

问题 i have following problem: I have a web-application for signing pdf-files in the browser. A user can upload a pdf file which will be saved as blob-file in a sql-database. An other user can now digital sign the file. This works fine but I'm in trouble to send the signing data back to PHP to upgrade the blob file in the database with the siging data. So that the next user can sign the file another time. This is my way to store the file into the database (upload_system_va.php): $filedata = base64