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Determine project root from a running node.js application
...re('path');
var globalRoot = __dirname; //(you may have to do some substring processing if the first script you run is not in the project root, since __dirname refers to the directory that the file is in for which __dirname is called in.)
//compare the last directory in the globalRoot path...
CASCADE DELETE just once
...hus foreign) keys. Also, the keys all have to be able to be represented in string form, but it could be written in a way that doesn't have that restriction. I use this function VERY SPARINGLY anyway, I value my data too much to enable the cascading constraints on everything.
Basically this function ...
How do I implement basic “Long Polling”?
...ew message arrives).
Here is a really basic example, which sends a simple string after 2-10 seconds. 1 in 3 chance of returning an error 404 (to show error handling in the coming Javascript example)
msgsrv.php
<?php
if(rand(1,3) == 1){
/* Fake an error */
header("HTTP/1.0 404 Not Found...
Java 7 language features with Android
...re those which do not depend on the library:
Diamond operator (<>)
String switch
Multiple-catch (catch (Exc1 | Exc2 e))
Underscore in number literals (1_234_567)
Binary literals (0b1110111)
And these features cannot be used yet:
The try-with-resources statement — because it requires th...
Android Preferences: How to load the default values when the user hasn't used the preferences-screen
...
Be aware that if you are using
getSharedPreferences(String sharedPreferencesName, int sharedPreferencesMode)
to retrieve preferences you have to use
PreferenceManager.setDefaultValues(Context context, String sharedPreferencesName, int sharedPreferencesMode, int resId, boolea...
Detect if the app was launched/opened from a push notification
... dictionary has the data you expect
if let type = userInfo["type"] as? String where type == "status" {
// IF the wakeTime is less than 1/10 of a second, then we got here by tapping a notification
if application.applicationState != UIApplicationState.Background && NSDate().tim...
Cannot use ref or out parameter in lambda expressions
...tured variables:
delegate void TestDelegate (out int x);
static void Main(string[] args)
{
TestDelegate testDel = (out int x) => { x = 10; };
int p;
testDel(out p);
Console.WriteLine(p);
}
share
...
Twitter image encoding challenge [closed]
... handling. It also requires the GMP library for bignum arithmetic for its string encoding.
I based my solution off of fractal image compression, with a few unique twists. The basic idea is to take the image, scale down a copy to 50% and look for pieces in various orientations that look similar to...
How can a time function exist in functional programming?
... the new action. For instance, let's pretend there is a function now :: IO String, which returns a String representing the current time. We can chain it with the function putStrLn to print it out:
now >>= putStrLn
Or written in do-Notation, which is more familiar to an imperative programmer...
Can a C# class inherit attributes from its interface?
...
public interface IModel {
[Required]
[DisplayName("Foo Bar")]
string FooBar { get; set; }
}
public class Model : IModel {
public string FooBar { get; set; }
}
Then in the view:
@* Note use of interface type for the view model *@
@model IModel
@* This control will receive the ...