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Other 2022-03-19 17:15:21
Keyboard disappearing when focussing on TextFormField flutter
This happens when you put GlobalKey<FormState> in your build function Try with static or add inside initState ... _formKey ... static GlobalKey<FormState> _formKey = new GlobalKey<FormState>(); Currently the key is recreated every tim... Add solution -
Java 2022-03-19 16:25:23
how to cast arraylist to array in java
import java.util.ArrayList; public class ListToArray { public static void main(String args[]){ ArrayList<String> list = new ArrayList<String>(); list.add("Apple"); ... Add solution -
Java 2022-03-19 12:55:14
how to have multiple conditions in an if statement java
//Program to check if the answer to the given question is correct //with multiple conditions in a single else if statement import java.util.Scanner; public class MultipleChoiceQuestion { public static void main(String args[]) { String question... Add solution -
Javascript 2022-03-18 07:30:11
reverse keys and values in object javascript
//The concise way by using ES6 syntax like this. const obj = {A : 1, B : 2, C : 3, D : 4} function objectFlip(obj) { return Object.entries(obj).reduce((acc, [key, value]) => (acc[value] = key, acc), {}) } console.log('input: ',obj); console.lo... Add solution -
Other 2022-03-18 07:20:01
an associative array save duplicated values under single key
$unique = array_reduce($subject, function($final, $article){ static $seen = array(); if ( ! array_key_exists($article['fk_article_id'], $seen)) { $seen[$article['fk_article_id']] = NULL; $final[] = $article; } return $final... Add solution -
C# 2022-03-18 05:05:03
ArgumentNullException system.net.dns exampple
public static IPHostEntry GetHostEntry(string hostNameOrAddress) { if(Logging.On)Logging.Enter(Logging.Sockets, "DNS", "GetHostEntry", hostNameOrAddress); &n... Add solution -
Java 2022-03-18 03:30:02
remove item from arraylist in java
// Java.util.ArrayList.remove(Object) method example import java.util.ArrayList; import java.util.List; public class ArrayListRemoveObjectMethod { public static void main(String[] args) { List<Integer> al = new ArrayList<>(); ... Add solution -
Java 2022-03-17 20:20:04
java add a list to a list
package com.journaldev.examples; import java.util.ArrayList; import java.util.List; public class ListAddExamples { public static void main(String[] args) { List<String> vowels = new ArrayList<>(); vowels.add("A"); // [A] ... Add solution