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What does the explicit keyword mean?
... compiler can use constructors callable with a single parameter to convert from one type to another in order to get the right type for a parameter.
Here's an example class with a constructor that can be used for implicit conversions:
class Foo
{
public:
// single parameter constructor, can be used...
How to serialize an object into a string
... System.out.println( string );
SomeClass some = ( SomeClass ) fromString( string );
System.out.println( "\n\nReconstituted object");
System.out.println( some );
}
/** Read the object from Base64 string. */
private static Object fromString( String s ) throws...
How to check if object property exists with a variable holding the property name?
...
hasOwnProperty() is better then myObj[myProp] (from other answers) as it works even if the value of myProp is 0
– Matt R
Oct 26 '12 at 19:48
9
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How to perform better document version control on Excel files and SQL schema files
...p directories of XML files (See How to properly assemble a valid xlsx file from its internal sub-components?). Git will view them as binary unless decompressed. It is possible to unzip the .xlsx and track the changes to the individual XML files inside of the archive.
You could also do this with .xl...
SVN repository backup strategies
...r certain, but surely some tools like 7-zip would be able to compress data from STDIN, meaning you could use the first style on Windows too.
– nickf
Apr 26 '09 at 12:06
5
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Python threading.timer - repeat function every 'n' seconds
...
From Equivalent of setInterval in python:
import threading
def setInterval(interval):
def decorator(function):
def wrapper(*args, **kwargs):
stopped = threading.Event()
def loop(): # exe...
How to JSON serialize sets?
...y to recover regular lists; if you convert sets to a dictionary using dict.fromkeys(s) then you lose the ability to recover dictionaries).
A more sophisticated solution is to build-out a custom type that can coexist with other native JSON types. This lets you store nested structures that include l...
What is the advantage of using async with MVC5?
...st example works:
When a request hits the action, ASP.NET takes a thread from the thread pool and starts executing it.
The IdentityManager.Authentication.CheckPasswordAndSignIn method is invoked. This is a blocking call -> during the entire call the worker thread is being jeopardized.
And her...
How to Define Callbacks in Android?
...ires me to edit the source path on it. So how would i carry out "callBack" from an old activity to a new activity?
– Antoine Murion
Apr 20 '15 at 8:41
3
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Finalize vs Dispose
...entHandles for instances are not used like this as they are used to signal from one thread to another. The question then becomes who should call Dispose on these? As a safeguard types like these implement a Finalize method, which makes sure resources are disposed when the instance is no longer refer...