I need help with creating a C# method that returns the index of the Nth occurance of a character in a string.
For instance, the 3rd occurance of the character 't' in the string "dtststx" is 5.
I run some processes on an EC2 cc2.8xlarge instance which has 32 virtual processors.
For some type of processes, when I run 16 processes on parallel, all of them use 100% of CPU cycles. But for other type of processes, they are not using 100% CPU and they finish considerably slower than a single thread.
There is no time spend on IO and all data is served from memory. Do you have any idea about the reason of this problem?
I am using Netbeans 6.8
The problem is that the projects explorer (that displays all the projects and their contents) displays each package as a node. For instance, if there is package hierarchy like this;
com.mycompany.myproject.package1.package1.1
then it displays 5 nodes for the five packages which is very disturbing while development.
Is there any way by which I can configure it(Netbeans) so that it groups all the subpackages of a package under one node and displays the subpackages only when I expand the package node?
I've developed a website in php codeigniter with the idea of using single physical instance of the code.
Here the logic i wanted to be is on login page user will chose the companyid which will be internally to the database name.
I want to know how to update the active_group variable according to the company id chosen by the user at the time of login.
Is there any way to do so.
I am trying to code a game following instructions contained in an OU TMA document which read:
In the constructor, write code to assign a new instance of Random to ran which you should create using the Random class's zero argument constructor
Will this code work?
Random ran = new Random(0) ;
I am a relative newbie to Java, and I don't understand exactly what the instructions mean
loosely speaking, Liskov Substitution Principle states that a derived class can be substitute in place of the base class without affecting the user.
In the case when the base class is an abstract class, which means no user is using an instance of the base class, does the Liskov inheritance restrictions still apply to the derived class?
Most of the languages like C++ when writing into a file, put an EOF character even if we miss to write statements like :
filestream.close
However is there any way, we can put the EOF character according to our requirement, in C++, for an instance.
Or any other method we may use apart from using the functions provided in C++.
If you need to ask more of information then kindly do give a comment.
Thanks in advance.
There are two arrays with equivalent size. How to decide whether these two arrays contain the same set of elements, but the orders of these elements in the respective arrays are different.
For instance.
A = [a, b, c]
B= [b, c, a]
I anticipate using some images in my Java application. These images will be drawn onto my JPanel using g.drawImage(). The JPanel is resizable and the images should scale as the JPanel increases/decreases in size
Two questions:
What image format is best for this type of desired scalable image? For instance, in this application, an image of size 100x100 may be scaled into an image of size 30x30 or 10x10 or 300x300.
How can I write code to do this scaling?
What is the difference when a class extend from Handler and Thread?
As described in developer.android.com
...
Each Handler instance is associated with a single thread and that thread's message queue.
...
Does the thread has no message queue ?
Any benefit for a class extend from Handler?
Hi,
I've seen iphone related open source library which says something like,
"You need 4.0+ iOS build environment but the code will run on 3.0+ iOS device."
I wonder how those two requirements can differ and how can I tell a minimum 'device' iOS version which a certain api would need.
For instance I want to use UIGestureRecognizer but the apple doc says it's 3.2+, but I want my app run on 3.12+.
Is there a difference between build os requirement and device os requirement to run an app?
Thank you
Is there a way to stop other subs from running while in a separate sub.
for instance say your in the sub
CreateNumber()
and the subs are setup like
CreateNumber()
AddNumber()
DeleteNumber()
Is there a way to be in CreateNumber() and call a function to stop AddNumber from running after creaetNumber() is finished? i just want my program to sit there to wait for an event to happen.
consider this class,with no instance variables and only methods which are non-synchronous can we infer from this info that this class in Thread-safe?
public class test{
public void test1{
// do something
}
public void test2{
// do something
}
public void test3{
// do something
}
}
Problem/Task:
Write an interface with one method and two classes that implement this interface.
Now write a main method with an array that holds an instance of each class. Using a for-each loop, invoke the method upon each item.
Is this an interview question? (I'm not sure if the author meant to post this as a question or was looking for an answer to the above.)
I believe Adobe tools like CS5 have ways to output as an iPhone app, but what about a regular AS3 or Flex project? Are there any tools to auto-port, or AS3/Flex iPhone implementations out there?
Out of interest, how does the CS5 thing work? Is it a totally different code-path or something less drastic? For instance Flash supports Shapes and Timelines, etc... do they in fact provide an iPhone Flash runtime of some sort?
Hello,
I have an object of CalendarEntry
I know that http://www.google.com/calendar/feeds/[email protected]/allcalendars/full is the feed url of all calendars
but how I can get this feed url from CalendarEntry instance?
Because I wanna post a new entry in a specified calendar and I need this url.
Thanks!
According to the Release Notes:
All user request have an
X-AppEngine-Country header which
contains the ISO-3166-1 alpha-2
country code for the user, based on
the IP address of the client request.
My app is running on localhost with the 1.5.1 Java release which contains the X-AppEngine-Country header but I don't seem to be receiving any value for this header in my requests.
Do I have to deploy the app to a production instance to test this feature?
Hey Guys, I am trying to find the way to use same view-state but with different views so that based on where it is being called, I can provide different view to the user.
For instance, trying to achieve as follows:
Please share your experience so that I can achieve this functionality easily.
hi
I have created an application in VStudio. It ran nicely in debugging mode, but my computer became slower and slower as I worked until it finaly became frozen.
after I manualy restarted it, the app wasn't running any more in debug and I get this execption in the browser.
Only I am connected right now to the app.
I have restarted the computer so there coudn't be any instance of a client connected
I have removed and reinstalled the IIS
what is wrong?
In C++ is there a predefined library function that will return the size of RAM currently available on a computer a program is being run on, at run-time?
For instance, if an object is 4bytes, then can we divide the available virtual memory by 4 bytes to give an estimate of how many more objects could be stored by the program safely?
I have used the sizeof() function to return the size of objects within my program.
Thanks
If I want to save a linked instance as null in a database, what should I do?
I cannot simply pass null to obj.setOneToOneAssociatedObject(null)
Still, I want to save this link as null (table allows it).
Hey,
I'm looking for a way to use something similar to link_to_unless_current but for sub URLs, so for instance for both these URLs:
/entity_name/
/entity_name/123
it will not result as a link. How can I achieve that in Rails?
How to write a query that can find me all item_number start with a certain value ?
For instance there are item_numbers like these :
123_abc
123_xyz
ierireire
321_add
999_pop
My current query looks like this :
"select from "+PayPal_Message.class.getName()+" where item_number == '"+Item_Number+"' order by item_number desc"
What's a query look like that can return all item_numbers start with "123_" ?
Hi,
I guess it has to do something with string being a reference type but I dont get why simply string.Replace("X","Y") does not work?
Why I need to do `string A=stringB.Replace("X","Y")
I thought it is just a method to be done on specified instance? Thanks for explanation
EDIT: Thank you so far. I extend my question Why "b+="FFF"works but the b.replace is not?
Hello,
I would like to know how I can find the length of an integer in C.
For instance:
1 = 1
25 = 2
12512 = 5
etc. etc.
How do I do this and is this even possible in C ?