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Concept behind these four lines of tricky C code
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}
else
{
printf((char*) m);
}
}
It recursively calls main() 771 times.
In the beginning, m[0] = 7709179928849219.0, which stands for C++Suc;C. In every call, m[0] gets doubled, to "repair" last two letters. In the last call, m[0] contains ASCII char representation of C++...
Soft keyboard open and close listener in an activity in Android
...c class BaseActivity extends Activity {
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = rootLayout.getRootView().getHeight() - rootLayout...
Why does PostgreSQL perform sequential scan on indexed column?
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If the SELECT returns more than approximately 5-10% of all rows in the table, a sequential scan is much faster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whe...
Faye vs. Socket.IO (and Juggernaut)
...lementation of Bayeux, which has a large bearing on the following.
Conceptually, yes: Faye could use Socket.IO. In practise, there are some barriers to this:
I've no idea what kind of server-side support Socket.IO requires, and the requirement that the Faye client (there are server-side clients in...
jQuery .hasClass() vs .is()
... Just because a function has less funtionality does NOT mean it's automatically faster.
– Kris
Feb 4 '11 at 19:54
15
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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...type inference can do that). This can be expressed in the CLR. But F# disallows it, mostly because if you did that, those APIs would not be callable from C#.) When it comes to interop, there are always trade-offs at 'edge' features regarding what benefits you get versus what interop you trade awa...
What is the advantage of using async with MVC5?
...l only when you are performing I/O bound operations such as remote server calls. The benefit of the async call is that during the I/O operation, no ASP.NET worker thread is being used. So here's how the first example works:
When a request hits the action, ASP.NET takes a thread from the thread poo...
How can I decompress a gzip stream with zlib?
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To decompress a gzip format file with zlib, call inflateInit2 with the windowBits parameter as 16+MAX_WBITS, like this:
inflateInit2(&stream, 16+MAX_WBITS);
If you don't do this, zlib will complain about a bad stream format. By default, zlib creates streams with ...
Java equivalent of C#'s verbatim strings with @
...d thanks. the fact that its a 'filename' in my case in kind of irrelevant. All my code is doing is taking a string (or trying to) and passing it on. I don't actually do anything with it other than pass it on to a web service. I was testing the response from a c# WCF service being called from Java. A...
Can you use an alias in the WHERE clause in mysql?
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WHERE (sum(reviews.rev_rating)/count(reviews.rev_id))>5
BUT! Not all expressions will be allowed - using an aggregating function like SUM will not work, in which case you'll need to use a HAVING clause.
From the MySQL Manual:
It is not allowable to refer to a
column alias in a WHERE...