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Start may not be called on a promise-style task. exception is coming
...s already started the task before giving it to you. You should only ever call Start on a task that you create by calling its constructor, and you shouldn't even do that unless you have a compelling reason to not start the task when you create it; if you want it started right away you should use Tas...
Best approach to converting Boolean object to string in java
...irst test for null and later invoke toString() method on your object.
Calling Boolean.toString(b) will invoke
public static String toString(boolean b) {
return b ? "true" : "false";
}
which is little slower than b.toString() since JVM needs to first unbox Boolean to boolean which will be...
How to declare global variables in Android?
...em you are encountering is how to save state across several Activities and all parts of your application. A static variable (for instance, a singleton) is a common Java way of achieving this. I have found however, that a more elegant way in Android is to associate your state with the Application con...
Is there an alternative sleep function in C to milliseconds?
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Also note that when compiling with gcc -Wall -g3 -std=c11 -o sleep_test sleep_test.c && ./sleep_test on Linux Ubuntu, with gcc version 4.8.4, I get the following warning: warning: implicit declaration of function ‘usleep’ [-Wimplicit-function-declaration]. The solutio...
Is there a way to detect if an image is blurry?
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Unless your image is cyclic, you will usually have sharp edges at the borders of the image that lead to very high frequencies
– Niki
Oct 14 '11 at 11:04
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Where can I find the error logs of nginx, using FastCGI and Django?
... For an answer on how to look. I was looking for logs from a different installation of nginx and it wasn't in the top answer.
– Robert Dundon
Dec 9 '16 at 15:23
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difference between collection route and member route in ruby on rails?
...h search_photos_path Acts on collection of resources(display all photos)
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
In my multithreaded asmx web service I had a class field _allData of my own type SystemData which consists of few List<T> and Dictionary<T> marked as volatile . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill...
Go Unpacking Array As Arguments
...sum as many things as you'd like. Notice the important ... after when you call the my_func function.
Running example: http://ideone.com/8htWfx
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How do I generate random numbers in Dart?
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11
A secure random API was just added to dart:math
new Random.secure()
dart:math
Random ...