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jQuery, simple polling example
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setinterval would make an ajax call every 5 seconds no matter what. the way have written it (which i believe is good practice) will wait for the results THEN make another ajax request 5 seconds later. there are times i would use setinterval, but this is no...
HEAD and ORIG_HEAD in Git
...or current branch. HEAD can also point directly to a commit; this state is called "detached HEAD", and can be understood as being on unnamed, anonymous branch.
And @ alone is a shortcut for HEAD, since Git 1.8.5
ORIG_HEAD is previous state of HEAD, set by commands that have possibly dangerous beha...
Call asynchronous method in constructor?
Summary : I would like to call an asynchronous method in a constructor. Is this possible?
13 Answers
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Conveniently map between enum and int / String
...return map.get(num);
}
}
This solution is nice and doesn't require 'fiddling with reflection' because it's based on the fact that all enum types implicitly inherit the Enum interface.
share
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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@Jochem: You're still trying to call a method on a null object, so I'm guessing no. Think of it as null.ToString() vs ToString(null).
– Svish
May 30 '12 at 14:31
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...l it is possible to maintain this fast-track code while still ensuring the caller is able to wait for all tasks to be completed, e.g.:
public Task DoSomethingAsync()
{
var t1 = DoTaskAsync("t2.1", 3000);
var t2 = DoTaskAsync("t2.2", 2000);
var t3 = DoTaskAsync("t2.3", 1000);
return...
How to prevent Node.js from exiting while waiting for a callback?
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Callback is Not Queued
Node runs until all event queues are empty. A callback is added to an event queue when a call such as
emmiter1.on('this_event',callback).
has executed. This call is part of the code written by t...
What is the meaning of single and double underscore before an object name?
...mc = MyClass()
>>> print mc.__superprivate
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: myClass instance has no attribute '__superprivate'
>>> print mc._semiprivate
, world!
>>> print mc.__dict__
{'_MyClass__superpriv...
When is JavaScript synchronous?
...ript is only asynchronous in the sense that it can make, for example, Ajax calls. The Ajax call will stop executing and other code will be able to execute until the call returns (successfully or otherwise), at which point the callback will run synchronously. No other code will be running at this poi...
Adding a Method to an Existing Object Instance
... that instance will be passed as the first argument whenever the method is called.
Callables that are attributes of a class (as opposed to an instance) are still unbound, though, so you can modify the class definition whenever you want:
>>> def fooFighters( self ):
... print "fooFighter...