In Java, is there a way to force a JVM instance to run on a single CPU/Core.
Additionally is there a way for given thread to figure out what CPU it is running on?
Hey,
Don't find any good answer to this simple question about helper/utils classes:
Why would i create a singleton (stateless) rather than static methods?
Why an object instance could be needed while the object has no state?
Sometimes i really don't know what to use...
I know constructors don't "return" anything but for instance if I call CMyClass *object = new CMyClass() is there any way to make object to be NULL if the constructor fails? In my case I have some images that have to be loaded and if the file reading fails I'd like it to return null. Is there any way to do that?
Thanks in advance.
I have 2 integer fields that represent dates in the YYYYMMDD format. What is the best way to subtract 2 of these fields to get the correct # of days between them?
For instance, if I take the difference between 20100511 and 20100428 I would like the result to be 13 and not 83. I know I need to convert the integer fields into date formats but everything I have tried either throws an exception or doesn't work correctly.
What am I missing? Answers in vb.net please
Hi,
Is there any way to completely ignore link break and tab characters etc. in RegEx?
For instance, the line break and tab characters could be found anywhere and in any order in the content string.
... [CustomToken \t \r\n Type="" \t \r\n Property="" \n /] ... [CT ...
The is the RegularExpression that I am currently using:
(\[CustomToken).*?(\/\])
.NET API
Regex.Matches(string input, string pattern)
Thanks for your suggestion.
Suppose I have a Dictionary like so:
Dictionary<string, Stream>
How can I get a list (or IEnumerable or whatever) of JUST the Keys from this dictionary? Is this possible?
I could enumerate the dictionary, and extract the keys one by one, but I was hoping to avoid this.
In my instance, the Dictionary contains a list of filenames (file1.doc, filex.bmp etc...) and the stream content of the file from another part of the application.
Is there a way in .NET 2.0 (C#) to serialize object like you do using XmlSerializer in a simple / customizable human readable format thats for instance looks like PXLS or JSON?
Also I know that XML is human readable, I'm looking for something with less annoying redundancy, something that you can output to the console as a result for the user.
Hi
I am using asp.net 2.0
I set a hidden text box from javascript and on postback, i want to check the value stored on the text box in page init event. Here is what i tried
string t = Request.Form["currentMode"].ToString();
but i get an error saying " Object reference not set to an instance of an object."
Any idea?asp.
I have some words:
shapes<- c("Square", "Triangle","Octagon","Hexagon")
I want to arrange them in pairs:
shapescount<-combn(shapes, 2)
shapescount
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] "Square" "Square" "Square" "Triangle" "Triangle" "Octagon"
[2,] "Triangle" "Octagon" "Hexagon" "Octagon" "Hexagon" "Hexagon"
I want to count each of the groupings of the letters in the pairs, for instance first pair is "6" for "Square" and "8" for "Triangle" giving me "14" for the first pair, and so on.
Hi,
I am using mysql database for my asp.net website.I need to implement to single sign on for multiple instances of my website.Currently to check if a user has logged in I am using a user control which checks for a "loggedin" cookie with single instance of the website.Now I need to extend the logic to achieve single signon for multiple instances of the same site.
Could someone please help.
Thanks.
I was trying to access the root directory and list the contents of it but I got 0 folders listed there. I s there anyway to access it for instance to query the SMS.db under root/SMS folder.
Thank you all in advance.
hi,
How can I make upper-case the first character of each word in a string accept a couple of words which I don't want to transform them, like - and, to, etc?
For instance, I want this - ucwords('art and design') to output the string below,
'Art and Design'
is it possible to be like - strip_tags($text, '<p><a>') which we allow and in the string?
or I should use something else? please advise!
thanks.
Hi guys,
I need to save files with non-latin filenames on a filesytem, using PHP.
I want to make this work cross-platform. How do I know what encoding I can use to write the file? I understand many modern filesystems are UTF-8 based (is this correct?), but I doubt Windows XP is (for instance).
So, is there a robust detection mechanism?
Evert
From the book "Groovy and Grails recipes" I'm using the following code snippet:
String HelloLanguage = "def hello(language) {return \"Hello $language\"}"
However, I get a compiler error "You attempted to reference a variable in the binding or an instance variable from a static context." because language can't be bound. What is wrong?
Hello people.
I'd like to know if the absence of element ordering of the Python's built-in set structure is "random enough". For instance, taking the iterator of a set, can it be considered a shuffled view of its elements?
(If it matters, I'm running Python 2.6.5 on a Windows host.)
I want to add days to a date to get a new date in Java. How to achieve it using the Calender class.
Calender dom = new GregorianCalender(d, m y);
is the instance of my date of manufacture and I want to reach to date of expiry adding some 100 days to the current date and store it in doe but unable to do that.
Any help would be appreciable.
I'm trying to debug a webpart installed on a client's SharePoint instance. I wanted a quick and easy logging feature, so I thought of writing messages to a text file in the temp directory. SharePoint doesn't seem to like it, so what are my options?
I can use __LINE__ as a method parameter just fine, but I would like an easy way to use it in a function that uses strings.
For instance say I have this:
11 string myTest()
12 {
13 if(!testCondition)
14 return logError("testcondition failed");
15 }
And I want the result of the function to be:
"myTest line 14: testcondition failed"
How can I write logError? Does it have to be some monstrosity of a macro?
I have two different C# applications that are running at the same time.
I would like both of them to be able to access the same "instance" of a DLL (also in C#).
The DLL holds some data that I'd like to return to whichever of the two applications is asking for it.
My DLL is thread-safe so I was hoping this would be possible but I'm not sure how.
Any help or advice would be much appreciated.
this is the method definition:
public static bool TryValidateObject(
Object instance,
ValidationContext validationContext,
ICollection<ValidationResult> validationResults,
bool validateAllProperties
)
what i am confused is the validateAllProperties parameter, I understand when it is true-validate all properties.
What about when it is false, not validate all properties, but which property will be validated?
I've got a set of data that has three attributes, say A, B, and C, where A is kind of the index (i.e., A is used to look up the other two attributes.) What would be the best data structure for such data?
I used two dictionaries, with A as the index of each. However, there's key errors when the query to the data doesn't match any instance of A.
I have two class named test in two different files,a.php and b.php for instance,the logic is like this:
include('a.php');
$a = new test();
if($somcondition_is_met)
{
include('b.php');
$b = new test();
}
Is there some trick to avoid Fatal error: Cannot redeclare class ?
Hi guys,
I need to delete duplicate users in django (by duplicate I mean two or more users with the same email).
If your instance there are three records like this:
id email
3 [email protected]
56 [email protected]
90 [email protected]
I need to delete records 56 and 90 and leave the oldest record id - 3
Is there a way to quickly do this.
Thanks :)
For the first time, I'm creating a Java Swing application.
I'm using Windows Builder Pro in Eclipse, and a MySQL database (already setup up).
Let's say I have a combo box, and I want (for instance) all 'name' fields from a 'certain' table appear.
How can I setup that binding? I know how to programatically handle the connection and query code, what I would like to know is how to make that binding in Eclipse.
We have a dao as a project (jar file).
Clients use its interfaces and factories to operate with database.
Using standard CRUD operations, dao allows you to search an entity by some search criteria.
What is the best way to represent this criteria?
Is transfer object appropriate pattern in this situation?
How should client create SearchModel instance?
Please, share.
Regards.