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How to concatenate two strings in C++?
...e performance. Worst case is, that operator+= performs both a deallocation and an allocation. Heap allocations are among the most expensive operations we commonly do.
– IInspectable
Feb 7 at 12:17
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What does placing a @ in front of a C# variable name do? [duplicate]
I've been working with some C# legacy code and I've been seeing a lot of @ symbols in front of variable names. What does this signify or do?
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Rails - Validate Presence Of Association?
...ccepts_nested_attributes_for with :allow_destroy => true: Nested models and parent validation. In this topic you can find solution.
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Sending files using POST with HttpURLConnection
Since the Android developers recommend to use the HttpURLConnection class, I was wondering if anyone can provide me with a good example on how to send a bitmap "file" (actually an in-memory stream) via POST to an Apache HTTP server. I'm not interested in cookies or authentication or anything com...
Sending command line arguments to npm script
...rgs to npm run as of npm 2.0.0
The syntax is as follows:
npm run <command> [-- <args>]
Note the necessary --. It is needed to separate the params passed to npm command itself and params passed to your script.
So if you have in package.json
"scripts": {
"grunt": "grunt",
"ser...
How to make an AJAX call without jQuery?
...er the if blocks relating to the xmlhttp.status, then just call them there and you're done.
– Jay
Jun 18 '15 at 20:30
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Is there a way to avoid null check before the for-each loop iteration starts? [duplicate]
...))
Alternatively, you could make a wrapper class that implements Iterable and takes a collections, and handles a null collection.
You could then write foreach(T obj : new Nullable<T>(list1))
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ASP.NET MVC: Custom Validation by DataAnnotation
...(validationContext.DisplayName));
}
return null;
}
}
and then you might have a view model and decorate one of its properties with it:
public class MyViewModel
{
[CombinedMinLength(20, "Bar", "Baz", ErrorMessage = "The combined minimum length of the Foo, Bar and Baz propert...
How to detect READ_COMMITTED_SNAPSHOT is enabled?
...etect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON;
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Get parts of a NSURL in objective-c
... way:
the protocol or scheme (here, http)
the :// delimiter
the username and the password (here there isn't any, but it could be username:password@hostname)
the host name (here, digg.com)
the port (that would be :80 after the domain name for instance)
the path (here, /news/business/24hr)
the param...