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?
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!
I'm working on a windows forms application that uses a DataGridView. Some of the cells contain a DataGridViewComboBox. In some cases, I have several values to display in the combobox. For that scenario, it would be better to use a ListBox instead of a ComboBox.
Is it possible to use a multi-column listbox within a DataGridView instead of a ComboBox?
If so, can you point me in the right direction?
Thanks much.
Al D.
I have an analysis that can be parallelized over a different number of processes. It is expected that things will be both IO and CPU intensive (very high throughput short-read DNA alignment if anyone is curious.)
The system running this is a 48 core linux server.
The question is how to determine the optimum number of processes such that total throughput is maximized. At some point the processes will presumably become IO bound such that adding more processes will be of no benefit and possibly detrimental.
Can I tell from standard system monitoring tools when that point has been reached?
Would the output of top (or maybe a different tool) enable me to distinguish between a IO bound and CPU bound process? I am suspicious that a process blocked on IO might still show 100% CPU utilization.
How to acces each element in macro if the definition is like MACRO(name, seq) and the code is like:
MACRO("TheName",
(Elem1)
(Elem2)
(Elem3)
)
I want to generate the next code:
MACRO("TheName",
ELEMMACRO(Elem1)
ELEMMACRO(Elem2)
ELEMMACRO(Elem3)
)
Or something like that. In other words, I want to process every parameter separately (I don't care of definition, even if it will be something like
MACRO("TheName",
Elem1,
Elem2,
Elem3
)
There could be more elements, there could be less. I have tried V_ARGS (I need it only for gcc), but I can only copy all the elements by that, not to process them separately.
What can I do?
P.S. Because of some reasons, I can't use Boost.
i build a new website.but the host is in USA.i am not in USA.
i need get the time on the website page to compare with one local Variable.
But because of time difference,it has 8 hous difference?how to solve this problom?
my code
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
java.util.Date currentTime = new java.util.Date();
String dateString = formatter.format(currentTime); `
how to revise these code ?
How to make this method return boolean value, depending on query return. False - nothing, True - data exists. Before i just returned int from uniqueQuote.Count() but does not look like great method. Thank you!
private bool CheckEnquiryUser(int enquiryId, Guid userId)
{
int selectedEnquiryId = enquiryId;
Guid currentUserId = userId;
Entities ctx3 = new Entities();
var uniqueQuote = from quot in ctx3.Enquiries.Include("aspnet_Users")
where quot.EnquiryId == selectedEnquiryId &&
quot.aspnet_Users.UserId == currentUserId
select quot;
bool exist = uniqueQuote;
return exist;
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
MYMESSAGE = "<div>Hello</div><p></p>Hello"
send_mail("testing",MYMESSAGE,"[email protected]",['[email protected]'],fail_silently=False)
However, this message doesn't get the HTML mime type when it is sent. In my outlook, I see the code...
Is it possible to get the name of a node using minidom?
for example i have a node:
<heading><![CDATA[5 year]]></heading>
what i'm trying to do is store the value heading so that i can use it as a key in a dictionary,
the closest i can get is something like
[<DOM Element: heading at 0x11e6d28>]
i'm sure i'm overlooking something very simple here, thanks!
Basically, this question with a difference...
Is it possible to capture print output from a TSQL stored procedure in .NET, using the Entity Framework?
The solution in the other question doesn't work for me. It works with the connection type from System.Data.SqlClient but I'm using the one from System.Data.EntityClient which does not have an InfoMessage event. (Of course, I could just create an SQL connection based on the Entity connection settings, but prefer to do it directly.)
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???
I am aware of array_walk() and array_map(). However when using the former like so (on an old project) it failed
array_walk($_POST, 'mysql_real_escape_string');
Warning: mysql_real_escape_string()
expects parameter 2 to be resource,
string given.
So I went with this slightly more ugly version
foreach($_POST as $key => $value) {
$_POST[$key] = mysql_real_escape_string($value);
}
So why didn't the first way work? What is the best way to map values of an array to a function?
Hello to all!
I am writing a small Django application and I should be able to create
for each model object its periodical task which will be executed with
a certain interval. I'm use for this a Celery application, but i can't understand one thing:
class ProcessQueryTask(PeriodicTask):
run_every = timedelta(minutes=1)
def run(self, query_task_pk, **kwargs):
logging.info('Process celery task for QueryTask %d' %
query_task_pk)
task = QueryTask.objects.get(pk=query_task_pk)
task.exec_task()
return True
Then i'm do following:
>>> from tasks.tasks import ProcessQueryTask
>>> result1 = ProcessQueryTask.delay(query_task_pk=1)
>>> result2 = ProcessQueryTask.delay(query_task_pk=2)
First call is success, but other periodical calls returning the error
- TypeError: run() takes exactly 2 non-keyword arguments (1 given) in
celeryd server.
So, can i pass own params to PeriodicTask run() ?
Thanks!
I want to double click on a div, but right now it "selects"/highlights a word. How do I make it so that this doesn't happen?
I tried:
$(this).hide().show()
and
$(this).blur()
But it still highlights the word.
I have the following dilemma: I have a list of strings, and I want to find the set of string which start with a certain prefix. The list is sorted, so the naive solution is this:
Perform binary search on the prefixes of the set, and when you find an element that starts with the prefix, traverse up linearly until you hit the top of the subset.
This runs in linear time, however, and I was wondering if anyone can suggest a more efficient way to do it.
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/
I'm trying to convert the following MATLAB code to Python and am having trouble finding a solution that works in any reasonable amount of time.
M = diag(sum(a)) - a;
where = vertcat(in, out);
M(where,:) = 0;
M(where,where) = 1;
Here, a is a sparse matrix and where is a vector (as are in/out). The solution I have using Python is:
M = scipy.sparse.diags([degs], [0]) - A
where = numpy.hstack((inVs, outVs)).astype(int)
M = scipy.sparse.lil_matrix(M)
M[where, :] = 0 # This is the slowest line
M[where, where] = 1
M = scipy.sparse.csc_matrix(M)
But since A is 334863x334863, this takes like three minutes. If anyone has any suggestions on how to make this faster, please contribute them! For comparison, MATLAB does this same step imperceptibly fast.
Thanks!
The title explains it well. I have set up Notepad++ to open the python script in the command prompt when I press F8 but all Swedish characters looks messed up when opening in CMD but perfectly fine in e.g IDLE.
This simple example code:
#!/usr/bin/env python
#-*- coding: UTF-8 -*-
print "åäö"
Looks like this.
As you can see the output of the bath file I use to open Python in cmd below shows the characthers correctly but not the python script above it. How do i fic this?
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"?
I'm writing some C code to parse IEEE 802.11 frames, but I'm stuck trying to create a new variable whose length depends on the size of the frame itself.
Here's the code I currently have:
int frame_body_len = pkt_hdr->len - radio_hdr->len - wifi_hdr_len - 4;
u_char *frame_body = (u_char *) (packet + radio_hdr->len + wifi_hdr_len);
Basically, the frame consists of a header, a body, and a checksum at the end. I can calculate the length of the frame body by taking the length of the packet and subtracting the length of the two headers that appear before it (radio_hdr->len and wifi_hdr_len respectively), plus 4 bytes at the end for the checksum.
However, how can I create the frame_body variable without the trailing checksum? Right now, I'm initializing it with the contents of the packet starting at the position after the two headers, but is there some way to start at that position and end 4 bytes before the end of packet? packet is a pointer to a u_char, if it helps.
I'm a new C programmer, so any and all advice about my code you can give me would be much appreciated. Thanks!
I know that the android plattform is open source. What I am interested in is the share of open source Android apps, thus developers that realease their own apps under a open source license.
Does anybody have an idea, how to get this information?
This is really a few questions in one, I'm wondering what the performance cost is for these things, as I haven't really been following a best practice of any sort for these. The answers may also be useful to other readers, if somebody knows these.
(1) If I need the core data managed object context, is it bad to use
#import "myAppDelegate.h"
//farther down in the code:
NSManagedObjectContext *context = [(myAppDelegate.h*)[[UIApplication sharedApplication] delegate] managedObjectContext];
as opposed to leaving the warning you get if you don't cast the delegate?
(2) What is the cheapest way to hard-code a string? I have been using
return @"myString";
on occasion in some functions where I need to pass it to a variety of places, is it better to do it this way:
static NSString *str = @"myString";
return str;
(3) How costly is it to subclass an object i wrote vs. making a new one, in general?
(4) When I am using core data and navigating through a hierarchy of some sort, is it necessary to turn things back into faults somehow after I read some info from them? or is this done automatically?
Thanks for any help.