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When using lambda expressions or anonymous methods in C#, we have to be wary of the access to modified closure pitfall. For example:

We have all heard of how in a for loop, we should do this:

I have a question regarding the native Array.forEach implementation of Javascript: Does it behave asynchronously? For example, if I call: [many many elements].forEach(function () {lots of work to do}) Will this be non-blocking? Source: Tips4all

I'm either using incorrect syntax or going about this with the wrong method. In the html document that references this php file, there is a simple list of checkboxes. The user checkmarks the boxes and hits submit. This then kicks off with the goal of prompting the user to run or save each file. If I checkmark test1.txt, test2.txt and test3.txt, there should be a popup for each (assuming of course the browser is IE). The issue is that only the 'last' checkmarked item is downloaded - the rest are not. I thought of opening a popup window for each file found but it has no effect. If I use echo $filename, it then correctly displays each entry I checkmarked so the php script appears to be given the multiple file names correctly. Can someone point me in the right direction? I'm pretty sure the $filename in the window.open parameter is not being used in the right syntax right now too. Here is the script: <?php foreach($_POST['files'] as $filename) { echo ...

I was using JProfiler for profiling of my application, as it is a huge application so I am very aware of its performance and efficiency. It was taking too long so I replace all Iterator.hasNext with for-each but when I am seeing in the JProfilers CPU view it is showing me Iterator.hasNext method called where I am using for-each . Why does so? Is there any relation between these two? Here is the example code : List<Map<String, Object>> mapList = jdbcTemplate .queryForList(MAP.SELECT_ALL); for (Map<String, Object> map : mapList) { list.add(fillPreferenceMaster(preferenceMasterMap)); }

foreach ($courses as $course, $sections as $section, $example as $example) any ways to add more than 2? i only know the solution to 2 variables. foreach (array_combine($courses, $sections) as $course => $section)