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Other 2022-03-22 09:35:47
filter return item name
Use .filter when you want to get the whole object(s) that match the expected property or properties. Use .map when you have an array of things and want to do some operation on those things and get the result. The challenge is to get all of the messages... Add solution -
Javascript 2022-03-07 02:55:14
how to write to a json file in javascript
'use strict'; const fs = require('fs'); let student = { name: 'Mike', age: 23, gender: 'Male', department: 'English', car: 'Honda' }; let data = JSON.stringify(student, null, 2); fs.writeFile('student-3.json', data, (err) =>... Add solution -
Javascript 2022-03-03 21:55:09
mongoose save method
var Tank = mongoose.model('Tank', yourSchema); var small = new Tank({ size: 'small' }); small.save(function (err) { if (err) return handleError(err); // saved! }); // or Tank.create({ size: 'small' }, function (err, small) { if (err) return handl... Add solution -
Python 2022-03-03 06:15:02
how to call super class constructor in python two classes
from Employee import Employee from Person import Person class Manager(Person, Employee): def __init__(self,lname, fname, phone_number, addy, start_date, salary, department, direct_reports): Employee.__init__(self,start_date,salary) P... Add solution -
SQL 2022-02-19 01:00:03
sql comparison operators
(Between) operator same as ">= <=" For example: Select * From Employees Where salary Between 4000 AND 6000; (NOT) operator excluding given For example: Select last_name, job_id From Employees Where "Not" job_id = 'ABC'; (IN)... Add solution