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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...rong. I was under the impression that Linux thread creation was very cheap and after testing I determined that the overhead of function call in a new thread vs. a normal one is enormous. The overhead for creating a thread to handle a function call is something like 10000 or more times slower than a ...
What is Castle Windsor, and why should I care?
I'm a long-time Windows developer, having cut my teeth on win32 and early COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, b...
How much space can your BitBucket account have?
I created a BitBucket account today, and I love the fact that they allow you to have unlimited public/private repositories. However, I didn't find the size limit of your account? Does anyone know where to find it? Github offered 300mb if I remember correctly.
...
MongoDB - Update objects in a document's array (nested updating)
...rue);
For your question #2, the answer is easier. To increment the total and the price of item_three in any document that contains "my_item_three," you can use the $inc operator on multiple fields at the same time. Something like:
db.bar.update( {"items.item_name" : {$ne : "my_item_three" }} ,
...
Is it possible to assign numeric value to an enum in Java?
...
You cannot use enum constructor in code. EXIT_CODE.A and EXIT_CODE.B are the only instances that will ever exist.
– Bhesh Gurung
Apr 17 '14 at 18:40
2
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How do I make a matrix from a list of vectors in R?
...
So the difference between this and the standard rbind() is that do.call() passes each list item as a separate arg - is that right? do.call(rbind,a) is equivalent to rbind(a[[1]], a[[2]]... a[[10]])?
– Matt Parker
Aug...
How do I delete a fixed number of rows with sorting in PostgreSQL?
...'t change ctids, I don't think. Since that just compacts within each page, and the ctid is just the line number not a page offset. A VACUUM FULL or a CLUSTER operation would change the ctid, but those operations take an access exclusive lock on the table first.
– araqnid
...
How do I share IntelliJ Run/Debug configurations between projects?
...tions.
The share check-mark pulls the setting out of your workspace.xml and instead puts it in the directory .idea\runConfigurations. This is designed so you can share the setting with others.
You could copy this file and put it in the same location in all your idea projects.
However, in the fu...
How to write asynchronous functions for Node.js
... non-blocking IO because non blocking IO is better. The best way to understand it is to go watch some videos by ryan dahl.
How do I write asynchronous functions for Node?
Just write normal functions, the only difference is that they are not executed immediately but passed around as callbacks.
...
Mock HttpContext.Current in Test Init Method
...xt itself is fakeable just enough for you do replace the IPrincipal (User) and IIdentity.
The following code runs as expected, even in a console application:
HttpContext.Current = new HttpContext(
new HttpRequest("", "http://tempuri.org", ""),
new HttpResponse(new StringWriter())
);
/...