How can I select only distinct elements for the XML document using XPATH?I've tried to use the 'distinct-values' function but it didn't work for some reason..
Assume I have method
void SomeMethod(Action callback)
This method does some work in background thread and then invokes callback. The question is - how to block current thread until callback is called ?
There is an example
bool finished = false;
SomeMethod(delegate{
finished = true;
});
while(!finished)
Thread.Sleep();
But I'm sure there should be better way
Hi all, would the following Jquery selector get all of the 4th td elements of all the tables on the current page, and return their text as an array?:
var isbn = $.makeArray($("table tr td:nth-child(4)").text());
Hi:
My program uses sockets for inter-process communication. There is one server listening on a socket port(B) on localhost waiting for a list of TCP clients to connect. And on the other end of the server is another a socket(A) that sends out data to internet. The server is designed to take everything the TCP clients send him and forward to a server on the internet. My question is if two of the TCP clients happened to send data at the same time, is this going to be a problem for the server's outgoing socket(A)?
Thanks
To clearly separate the Controller and View layers, I do not longer want to pass full objects to my views. Instead I want to pass only arrays and objects that contain the data but do not have any methods. Otherwise a view script would be able to delete Doctrine records or traverse in the object tree to data that was not intended for the view.
d = {'apple':9,'oranges':3,'grapes':22}
How do I return the largest key/value?
Edit: How do I make a list that has this sorted by largest to lowest value?
I have a very big table with a lot of rows, every row has stats for every user for certain days. And obviously I don't have any stats for future. So to update the stats I use
UPDATE Stats SET Visits=@val WHERE ... a lot of conditions ... AND Date=@Today
But what if the row doesn't exist? I'd have to use
INSERT INTO Stats (...) VALUES (Visits=@val, ..., Date=@Today)
How can I check if the row exists or not? Is there any way different from doing the COUNT(*)?
If I fill the table with empty cells, it'd take hundreds of thousands of rows taking megabytes and storing no data.
I wonder if this is possible with straight SQL on MySQL. I need to do SELECT COUNT(*) FROM on each table in the database and output results in one result set.
Is it possible to do with just SQL?
Is there an ability to import fixed width file to oracle?
Preferably through .net(c#) for catching errors during import and showing them to user.
P.S. File has 5 types of rows. For example 1 row has 5 columns, 2-nd has 50 columns.
I have a div which, when my page is first loaded, is about 100px from the top (it holds some buttons etc. for the page).
When a user scrolls past it, I would like the div to "follow" the user in that it attaches to the top of the screen. When the user returns to the top of the page, I want it back in its original position.
Visualization - xxxxx is the div:
Default (page load) User vertically scrolled well past it
--------- ---------
| | |xxxxxxx| < after div reaches top of screen when
|xxxxxxx| | | page is scrolled vertically, it stays
| | | | there
--------- ---------
I notice my query doesn't behave correctly if one of the like variables is empty:
SELECT name
FROM employee
WHERE name LIKE '%a%'
AND color LIKE '%A%'
AND city LIKE '%b%'
AND country LIKE '%B%'
AND sport LIKE '%c%'
AND hobby LIKE '%C%'
Now when a and A are not empty it works but when a, A and c are not empty the c part is not excuted so it seems?
How can I fix this?
This simple test, of course, works as expected:
scala var b = 2
b: Int = 2
scala b += 1
scala b
res3: Int = 3
Now I bring this into scope:
class A(var x: Int) { def +=(y:Int) { this.x += y } }
implicit def int2A(i:Int) : A = new A(i)
I'm defining a new class and a += operation on it.
I never expected this would affect the way my regular Ints behave.
But it does:
scala var b:Int = 0
b: Int = 0
scala b += 1
scala b
res29: Int = 0
scala b += 2
scala b
res31: Int = 0
Scala seems to prefer the implicit conversion over the natural += that is already defined to Ints. That leads to several questions...
Why? Is this a bug? Is it by design?
Is there a work-around (other than not using "+=")?
Thanks
Why does x alerts undefined for iframe but works for embed. I'm grabbing the iframe or embed code from a textarea
<iframe src="http://www.youtube.com/embed/9kiWvkj2ldWiU?hd=1"></iframe>
var textarea = $('#embedModal textarea'),
textareaValue = textarea.val(),
$embed = $($(textareaValue).find('iframe')),
x = $embed.attr('src');
alert(x); //alerts undefined for iframe
If you change find('iframe') to find('embed') and you try with the below embed code. then i'm able to get the value of src, but with iframe i get undefined. Seems strange.
<embed src="http://www.youtube.com/embed/9kiWvkj2ldWiU?hd=1"></embed>
Ok, I have a Preferences activity set with an XML layout.
Here I have a couple of Preferences that open some dialogs. On these preferences I want to have an arrow on the right of them like in the screenshot. How I do this, is something related to the theme ?
First screenshot is how I want to look, second is what I have now.
http://img545.imageshack.us/i/screenshot1zlk.png/
http://img405.imageshack.us/i/tsc3.png/
So I have a managed AlertDialog with a number of EditTexts & separate portrait + landscape layouts. The user opens the dialog in portrait mode, enters some text and then all of a sudden decides to pop out the keyboard. Now, I need to remove the dialog and recreate it for the changed layout persisting the text entered.
What I can think of is getting references to the EdiTexts in onPrepareDialog(..), then getting the actual text in onConfigurationChanged(..), then removing the dialog, then showing it again, then populating it. Rather ugly, huh?
Are there any better options?
Suppose I have a span:
<span class="myspan"></span>
.myspan{
background: url(image.png) top left no-repeat;
}
How do I make it so that when people hover my span, it shows "image_hover.png"?
In R, what is the most efficient way to count the length between 2 values. for example, i have vector x , which are all randomly choose from 1 to 100, how can i find out the length between the first"2" and first"40",
x=(1,2,3,4,5,6,7,40,1,2,3,21,4,1,23,4,43,23,4,12,3,43,5,36,3,45,12,31,3,4,23,41,23,5,53,45,3,7,6,36)
for this vector, the answer should be 5 and 6
Hey all,
I'm practicing Jquery and I've written this simple Jquery statement:
var someText = $("table tr td").text();
Should this not return all text of td elements found within tr's that are found within tables? How do I fix this? Currently when I run this, it says that table tr td is null, but I have a table on the page I'm testing on.
Thanks!
hey I'm writing on an Server-Client program
but when my client sends something, it never reaches my server!
I'm sending like this:
public void Send(string s)
{
char[] chars = s.ToCharArray();
byte[] bytes = chars.CharToByte();
nstream.Write(bytes, 0, bytes.Length);
nstream.Flush();
}
and Receiving in a background thread like this
void CheckIncoming(object dd)
{
RecievedDelegate d = (RecievedDelegate)dd;
try
{
while (true)
{
List<byte> bytelist = new List<byte>();
System.Threading.Thread.Sleep(1000);
int ssss;
ssss = nstream.ReadByte();
if (ssss > 1)
{
System.Diagnostics.Debugger.Break();
}
if (bytelist.Count != 0)
{
d.Invoke(bytelist.ToArray());
}
}
}
catch (Exception exp)
{
MSGBOX("ERROR:\n" + exp.Message);
}
}
the ssss int is never 1
whats happening here???