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Javascript 2021-09-09 08:30:02
difference between foreach and map in js
forEach() just loop through the elements. It's throws away return values and always returns undefined.The result of this method does not give us an output . map() loop through the elements allocates memory and stores return values by iterating main array... Add solution -
Other 2021-09-08 10:45:02
private void checkAnswer(boolean userPressedTrue) { ... mQuestionsAnswered[mCurrentIndex] = true; mTrueButton.setEnabled(false); mFalseButton.setEnabled(false); ... }
if (savedInstanceState != null) { // Save Current Index of question mCurrentIndex = savedInstanceState.getInt(KEY_INDEX, 0); // Save whether question has been answered. Do not let user answer again. int[] mQuestionAnsw... Add solution -
PHP 2021-09-08 09:39:01
create a random question generator php
<?php //Connect with mysql $db = new mysqli("host","user","pass","db"); //Perform the query to choose random questions $query = $db->query("SELECT * FROM `table` ORDER BY RAND() LIMIT 2... Add solution -
Java 2021-09-08 03:31:01
saving String character in arraylist
//storing String character in arraylist import java.util.*; public class Basic_Practice2 { public static void main(String[] args) { String s = "Hello"; ArrayList<String> al = new ArrayList<String>(); //storing St... Add solution -
Kotlin 2021-09-07 16:39:02
for loop in kotlin with index
val array = arrayOf(1, 3, 9) for (item in array) { //loops items } for (index in 0..array.size - 1) { //loops all indices } for (index in 0 untill array.size) { //loops all indices } for (index in array.indices) { //loops all indices (perform... Add solution -
Java 2021-09-07 04:44:03
How do you count characters in a string array in Java?
package practical5; import java.util.Arrays; public class Part1_9 { public static void main(String[] args) { // declaring and populating array String quoteArray[] = { "\"Continuous", "effort", "not", "st... Add solution -
Other 2021-09-06 08:58:02
length vs length()
length() : In String class we have length() method which is used to return the number of characters in string. Ex : String str = “Hello World”; System.out.println(str.length()); Str.length() will return 11 characters including space. leng... Add solution
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