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Javascript 2022-01-31 02:42:27
RangeError
//Occurs when passing an invalid value to a function. let nums = Array(-1); /*The constructor function Array(n) creates an empty array of length n. It is not possible to create an array with negative length, so the code results in RangeError: Invalid ... Add solution -
C# 2022-01-31 00:05:53
lambda expressions c#
//Lambdas are just short handed anonymous method or functions usally //for use in passing to other methods or functions to call such as a sort. //Example: //The Lambda used here after the =s Action ExampleContainerForDelagate = ()=> {/*Do something s... Add solution -
PHP 2022-01-30 17:41:01
laravel one session per user
Firstly uncomment out the: \Illuminate\Session\Middleware\AuthenticateSession::class, line from App\Http Kernel.php class. Secondly add this line in your login controller function just after login attempt successfully and before redirection: \Auth::logo... Add solution -
C 2022-01-30 15:10:39
power function in c without pow
// power function in c without pow #include <stdio.h> double mypow(double base, double power); int main() { int base, exponent; printf("Enter Base: "); scanf("%d", &base); printf("Enter Exponent: "); scan... Add solution -
PHP 2022-01-30 14:30:39
php generate unique id for mysql
A programmatic way can be to: add a UNIQUE INDEX to the field generate a random string in PHP loop in PHP ( while( ! DO_THE_INSERT ) ) generate another string Note: This can be dirty, but has the advantage to be DBMS-agnostic Even if you choose to use a... Add solution -
Javascript 2022-01-30 11:31:44
middlewares in redux
A Redux middleware is a function returning a function, which takes next as a parameter. Then the inner function returns another function which takes action as a parameter and finally returns next(action). Here's how it looks like: function Middleware() ... Add solution -
C# 2022-01-29 23:16:12
use try catch in coroutine unity
using System; using System.Collections; using UnityEngine; /// <summary> /// Utility functions to handle exceptions thrown from coroutine and iterator functions /// http://JacksonDunstan.com/articles/3718 /// </summary> public st... Add solution -
Javascript 2022-01-28 06:20:36
node import all functions from file
//we are in ./utils/dbHelper.js, here we have some helper functions function connect() { // connect do db... } function closeConnection() { // close connection to DB... } //let's export this function to show them to the world outside module.exports ... Add solution -
Javascript 2022-01-27 19:50:26
ellipsis javascript
function sum(x, y, z) { return x + y + z; } const numbers = [1, 2, 3]; console.log(sum(...numbers)); // expected output: 6 console.log(sum.apply(null, numbers)); // expected output: 6 /* Spread syntax (...) allows an iterable such as an array expres... Add solution -
Javascript 2022-01-27 04:21:06
how to filter object in javascript
// use filter() function. Let say we have array of object. let arr = [ {name: "John", age: 30}, {name: "Grin", age: 10}, {name: "Marie", age: 50}, ]; //Now I want an array in which person having age more than 40 is not ... Add solution