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What does SynchronizationContext do?
...e new async / await keywords and the Task Parallel Library (TPL), i.e. the API surrounding the Task and Task<TResult> classes. These will, to a very high degree, take care of capturing the UI thread's synchronization context, starting an asynchronous operation, then getting back onto the UI th...
What does “Object reference not set to an instance of an object” mean? [duplicate]
...nds on the specific scenario that you've encountered.
If you are using an API or invoking methods that may return null then it's important to handle this gracefully. The main method above can be modified in such a way that the NullReferenceException should never be seen by a user:
static void Main...
What does “pending” mean for request in Chrome Developer Window?
...fine and the Status Text changed to 200 OK.
For example using ASP.NET Web Api
return new HttpResponseMessage(HttpStatusCode.OK ) {
Content = request.Content
};
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improv...
How to count total number of watches on a page?
...m not sure how accurate this is and it definitely depends on some internal API. I'm using angularjs 1.0.5.
$rootScope.countWatchers = function () {
var q = [$rootScope], watchers = 0, scope;
while (q.length > 0) {
scope = q.pop();
if (scope.$$watchers...
How do I print a double value without scientific notation using Java?
...lue).toPlainString() From the description at docs.oracle.com/javase/7/docs/api/java/math/…), it's not immediately obvious how it behaves when given different types of numbers, but it does eliminate scientific notation.
– Derek Mahar
Apr 7 '15 at 15:22
...
How to paginate with Mongoose in Node.js?
...
After taking a closer look at the Mongoose API with the information provided by Rodolphe, I figured out this solution:
MyModel.find(query, fields, { skip: 10, limit: 5 }, function(err, results) { ... });
...
Is there a way to take a screenshot using Java and save it to some sort of image?
...p = File.createTempFile("screenshot", ".png");
// Use the ImageIO API to write the bufferedImage to a temporary file
ImageIO.write(bufferedImage, "png", temp);
// Delete temp file when program exits
temp.deleteOnExit();
} catch (IOException ioe) {
ioe.pr...
In c# is there a method to find the max of 3 numbers?
...
If, for whatever reason (e.g. Space Engineers API), System.array has no definition for Max nor do you have access to Enumerable, a solution for Max of n values is:
public int Max(int[] values) {
if(values.Length < 1) {
return 0;
}
if(values.Length ...
How to convert Nonetype to int or string?
... nonetype to perform a calculation...i'm currently pulling data via a rest api which is returning a nonetype containing a numerical value. If i set it to 0 or leave it as it is i can't do anything with it
– br3w5
Dec 31 '13 at 17:13
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...find and its friends use to generate their queries directly. It is private API so there is a huge risk that Rails 3 will totally break it, but for debugging, it is an ok solution.
The method is construct_finder_sql(options) (lib/active_record/base.rb:1681) you will have to use send because it is pr...