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  • A question about making a C# class persistant during a file load

    - by Adam
    Apologies for the indescriptive title, however it's the best I could think of for the moment. Basically, I've written a singleton class that loads files into a database. These files are typically large, and take hours to process. What I am looking for is to make a method where I can have this class running, and be able to call methods from within it, even if it's calling class is shut down. The singleton class is simple. It starts a thread that loads the file into the database, while having methods to report on the current status. In a nutshell it's al little like this: public sealed class BulkFileLoader { static BulkFileLoader instance = null; int currentCount = 0; BulkFileLoader() public static BulkFileLoader Instance { // Instanciate the instance class if necessary, and return it } public void Go() { // kick of 'ProcessFile' thread } public void GetCurrentCount() { return currentCount; } private void ProcessFile() { while (more rows in the import file) { // insert the row into the database currentCount++; } } } The idea is that you can get an instance of BulkFileLoader to execute, which will process a file to load, while at any time you can get realtime updates on the number of rows its done so far using the GetCurrentCount() method. This works fine, except the calling class needs to stay open the whole time for the processing to continue. As soon as I stop the calling class, the BulkFileLoader instance is removed, and it stops processing the file. What I am after is a solution where it will continue to run independently, regardless of what happens to the calling class. I then tried another approach. I created a simple console application that kicks off the BulkFileLoader, and then wrapped it around as a process. This fixes one problem, since now when I kick off the process, the file will continue to load even if I close the class that called the process. However, now the problem I have is that cannot get updates on the current count, since if I try and get the instance of BulkFileLoader (which, as mentioned before is a singleton), it creates a new instance, rather than returning the instance that is currently in the executing process. It would appear that singletons don't extend into the scope of other processes running on the machine. In the end, I want to be able to kick off the BulkFileLoader, and at any time be able to find out how many rows it's processed. However, that is even if I close the application I used to start it. Can anyone see a solution to my problem?

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  • MVC Design Question

    - by user325142
    I'm trying to build a pager where it's just Next / Previous buttons that call a jquery function that post a JSON request. Inside the function, the current page "index" is retrieved from a hidden field and passed to the controller. Inside the controller, I reset the index if I'm on the last page of data. How would I pass the new index value back to the view? Or is there a better way to do what i'm trying to do? Thanks

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  • how to create array of a week days name in php

    - by I Like PHP
    i want to create an array of 7 days through php means all 7 days name... i don't want to write ..sunday monday tuesday...etc... and days will be started from sunday .. means if today is 29 march( monday) then it automatically grabs the current date and create an array of days name starting from sunday. array always be in this way $weakarray=("sunday","monday",......,"saturday");

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  • How to use another type of EditingControl in a single .NET 3.5 DataGridView column ?

    - by too
    Is this possible to have two (or more) different kinds of cells to be displayed interchangeably in single column of C# .Net 3.5 WinForms DataGridView? I know one column has specified single EditingControl type, yet I think grid is flexible enough to do some tricks, I may think of only: Adding as many invisible columns to grid as required types of cells and on CellBeginEdit somehow exchange current cell with other column's cell Creating custom column and custom cell with possibility of changing EditingControl for single cell Which approach is better, is there any other solution, are there any examples ?

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  • Is this the correct way to build a Perl hash that utilizes arrays?

    - by Structure
    This is the first time I have manipulated hashes and arrays in this way -- and it is working. Basically, for every key there are multiple values that I want to record and then print out in the form "key -- value -- value -- val..." My code is as follows. I am surprised that it works, so concerned that it works "by mistake". Is this the correct way to accomplish this task, or is there a more efficient or appropriate method? while ($source =~ m/(regex)/g) { #Get all key names from source $listkey = $1; #Set current list key to the current regex result. $list{$listkey} = ++$i unless $list{$listkey}; #Add the key to the hash unless it already exists. $list{$listkey} = [] unless exists $list{$listkey}; #Add an array for the hash unless the hash already exists. while ($loopcount==0) { if ($ifcount==0) { $listvalue=result_of_some_function_using_list_key; #Get the first list value from the list key. $ifcount++; #Increment so we only get the first list value once. } else { $listvalue=result_of_some_function_using_list_value; #Update the last list value. } if ($listvalue) { #If the function returned a value... push @{$list{$listkey}}, $listvalue; #...then add the value to the hash array for the key. } else { #There are no more values and we need a new key. $listkey=0; #Reset variable. $domain=0; #Reset variable. $loopcount++; #Increment loop counter to exit loop. } } $ifcount=0; #Reset count variable so the next listvalue can be generated from the new key. $loopcount=0; #Reset count variable so another loop can begin for a new key. } foreach $listkey (keys %list) { #For each key in the hash. print "$listkey --> "; #Print the key. @values = @{$list{$listkey}}; #Reference the arrays of the hash. print join ' --> ', @values; #Print the values. print "\n"; #Print new line. }

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  • emacs: interactively search open buffers

    - by Data
    Is there a way to search all the open buffers for a particular pattern. C-s interactively searches current buffer. Similarly, is there something, that searches all the open buffers. I know I can use "occur", but "Occur" brings a new buffer and changes/messes the buffer organization.

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  • Applescript: cleaning a string

    - by Mike
    I have this string that has illegal chars that I want to remove but I don't know what kind of chars may be present. I built a list of chars that I want not to be filtered and I built this script (from another one I found on the web). on clean_string(TheString) --Store the current TIDs. To be polite to other scripts. set previousDelimiter to AppleScript's text item delimiters set potentialName to TheString set legalName to {} set legalCharacters to {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "?", "+", "-", "Ç", "ç", "á", "Á", "é", "É", "í", "Í", "ó", "Ó", "ú", "Ú", "â", "Â", "ã", "Ã", "ñ", "Ñ", "õ", "Õ", "à", "À", "è", "È", "ü", "Ü", "ö", "Ö", "!", "$", "%", "/", "(", ")", "&", "€", "#", "@", "=", "*", "+", "-", ",", ".", "–", "_", " ", ":", ";", ASCII character 10, ASCII character 13} --Whatever you want to eliminate. --Now iterate through the characters checking them. repeat with thisCharacter in the characters of potentialName set thisCharacter to thisCharacter as text if thisCharacter is in legalCharacters then set the end of legalName to thisCharacter log (legalName as string) end if end repeat --Make sure that you set the TIDs before making the --list of characters into a string. set AppleScript's text item delimiters to "" --Check the name's length. if length of legalName is greater than 32 then set legalName to items 1 thru 32 of legalName as text else set legalName to legalName as text end if --Restore the current TIDs. To be polite to other scripts. set AppleScript's text item delimiters to previousDelimiter return legalName end clean_string The problem is that this script is slow as hell and gives me timeout. What I am doing is checking character by character and comparing against the legalCharacters list. If the character is there, it is fine. If not, ignore. Is there a fast way to do that? something like "look at every char of TheString and remove those that are not on legalCharacters" ? thanks for any help.

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  • Client Server Assembly Missing? Db4Objects 7.4

    - by Tim Jarvis
    I have downloaded the current version of Db4Objects (7.4) and installed it. It appears to be missing the Client Server assembly Db4objects.Db4o.CS.dll Does anyone know if Client Server has changed with this version? If it has, does anyone have some details about creating a simple Server?

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  • Getting the "unmodified" HTML document from Javascript

    - by chris_l
    Is it possible to get the source of the current HTML document, exactly as it was loaded, in text form? (i.e. not the "Generated source" after parsing and DOM manipulation.) Note: Issuing an extra AJAX request to retrieve the HTML page again is not an option in this case: The document could have changed.

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  • view parents' class members in netbeans navigator?

    - by fayer
    in the navigator i can only see the current class' members. is there a way to include the parents' members. cause it is very useful when working with a framework, then you don't have to look for them in the documentation. i think this is available in eclipse but not netbeans.

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  • Increase the length of Xcode's "recent project" list?

    - by Bogatyr
    I switch in Xcode between working on a lot of different projects frequently (some I'm actively working on, some are old projects where I'm looking up code I want to re-use or quote in SO answers :)), so that part of my "working set" of projects invariably ends up falling off the recent project list. I do use finder tabs for the full working set of current project folders, but I really like the fast switching available using the recent projects list. Is there a way to increase the length of this list so that I can see more recently opened projects?

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