loops - w3toppers.com

Looping through Markers with Google Maps API v3 Problem

You are having a very common closure problem in the following loop: for(x in locations){ console.log(x); infowindow[x] = new google.maps.InfoWindow({content: x}); marker[x] = new google.maps.Marker({title:locations[x][0],map:map,position:locations[x][2]}); google.maps.event.addListener(marker[x], ‘click’, function() {infowindow[x].open(map,marker[x]);}); } Variables enclosed in a closure share the same single environment, so by the time the click callbacks are executed, the loop has run its course … Read more

PHP – Flushing While Loop Data with Ajax

You’re confused as to how PHP and AJAX interact. When you request the PHP page via AJAX, you force the PHP script to begin execution. Although you might be using flush() to clear any internal PHP buffers, the AJAX call won’t terminate (i.e., the response handlers won’t be called) until the connection is closed, which … Read more

Fastest way to loop through a 2d array?

Cache coherence. When you scan horizontally, your data will be closer together in memory, so you will have less cache misses and thus performance will be faster. For a small enough rectangle, this won’t matter.

How can I break out of two nested for loops in Objective-C?

If using goto simplifies the code, then it would be appropriate. for (;;) { for (;;) { break; /* breaks inner loop */ } for (;;) { goto outer; /* breaks outer loop */ } } outer:;

Get iteration index from List.map()

To get access to index, you need to convert your list to a map using the asMap operator. Example final fruitList = [‘apple’, ‘orange’, ‘mango’]; final fruitMap = fruitList.asMap(); // {0: ‘apple’, 1: ‘orange’, 2: ‘mango’} // To access ‘orange’ use the index 1. final myFruit = fruitMap[1] // ‘orange’ // To convert back to … Read more

How to loop through key/value object in Javascript? [duplicate]

Beware of properties inherited from the object’s prototype (which could happen if you’re including any libraries on your page, such as older versions of Prototype). You can check for this by using the object’s hasOwnProperty() method. This is generally a good idea when using for…in loops: var user = {}; function setUsers(data) { for (var … Read more

Twig for loop for arrays with keys

I found the answer : {% for key,value in array_path %} Key : {{ key }} Value : {{ value }} {% endfor %}

How to use data.table within functions and loops?

Remove object from ArrayList with some Object property

Using Java-8 Collection#removeIf myList.removeIf(obj -> obj.id == 10); With Java-7 you’ll have to use iterator: for(Iterator<MyType> iterator = myList.iterator(); iterator.hasNext(); ) { if(iterator.next().id == 10) iterator.remove(); } Note that list iteration is necessary in any case. In Java-8 removeIf method it’s just performed internally.

Why does using from future import print_function breaks Python2-style print? [closed]

First of all, from __future__ import print_function needs to be the first line of code in your script (aside from some exceptions mentioned below). Second of all, as other answers have said, you have to use print as a function now. That’s the whole point of from __future__ import print_function; to bring the print function … Read more