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Is Meyers' implementation of the Singleton pattern thread safe?
Is the following implementation, using lazy initialization, of Singleton (Meyers' Singleton) thread safe?
6 Answers
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SFTP Libraries for .NET [closed]
...ost up to date and best maintained libraries for SFTP (not to be confused with FTPS) communication in .NET. SSH.NET is a clean .NET 4.0 implementation of the SFTP protocol, and I've used it in a couple of solutions with flying colors and great success.
The original SharpSsh seems to be dead and mos...
When is JavaScript synchronous?
...vaScript was always asynchronous. However, I have learned that there are situations where it is not (ie DOM manipulations). Is there a good reference anywhere about when it will be synchronous and when it will be asynchronous? Does jQuery affect this at all?
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How to place two divs next to each other?
...need to encourage the wrapper div to contain both the floated children, or it will think it's empty and not put the border around them
Floating both divs:
#wrapper {
width: 500px;
border: 1px solid black;
overflow: hidden; /* add this to contain floated children */
}
#first {
width...
What's the best strategy for unit-testing database-driven applications?
I work with a lot of web applications that are driven by databases of varying complexity on the backend. Typically, there's an ORM layer separate from the business and presentation logic. This makes unit-testing the business logic fairly straightforward; things can be implemented in discrete modul...
Static variables in JavaScript
... "type" but not to an instance.
An example using a "classical" approach, with constructor functions maybe could help you to catch the concepts of basic OO JavaScript:
function MyClass () { // constructor function
var privateVariable = "foo"; // Private variable
this.publicVariable = "bar"; ...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
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WebSockets is definitely the future.
Long polling is a dirty workaround to prevent creating connections for each request like AJAX does -- but long polling was created when WebSockets didn't exist. Now due to WebSockets,
long polling is going...
Do checkbox inputs only post data if they're checked?
Is it standard behaviour for browsers to only send the checkbox input value data if it is checked upon form submission?
12 ...
What is the difference between string primitives and String objects in JavaScript?
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JavaScript has two main type categories, primivites and objects.
var s = 'test';
var ss = new String('test');
The single quote/double quote patterns are identical in terms of functionality. That aside, the behaviour you are trying to name is called auto-boxing. So what...
Accessing private member variables from prototype-defined functions
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No, there's no way to do it. That would essentially be scoping in reverse.
Methods defined inside the constructor have access to private variables because all functions have access to the scope in which they were defined.
Methods defined on a ...