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  • shortest directed odd cycle

    - by gleb-pendler
    6.1.4 Describe an algorithm based on breadth-first search for finding a shortest odd cycle in a graph. 6.3.5 Describe an algorithm based on directed breadth-first search for finding a shortest directed odd cycle in a digraph. what is most importent is that it must be a directed graph not necessary bfs but must be the shortest directed odd cycle!!! Question was taken from "Graph Theory" by J.A. Bondy and U.S.R. Murty thanks in advance!!!

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  • iPhone: Speeding up a search that's polling 17,000 Core Data objects

    - by randombits
    I have a class that conforms to UISearchDisplayDelegate and contains a UISearchBar. This view is responsible for allowing the user to poll a store of about 17,000 objects that are currently managed by Core Data. Everytime the user types in a character, I created an instance of a SearchOperation (subclasses NSOperation) that queries Core Data to find results that might match the search. The code in the search controller looks something like: - (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope { // Update the filtered array based on the search text and scope in a secondary thread if ([searchText length] < 3) { [filteredList removeAllObjects]; // First clear the filtered array. [self setFilteredList:NULL]; [self.tableView reloadData]; return; } NSDictionary *searchdict = [NSDictionary dictionaryWithObjectsAndKeys:scope, @"scope", searchText, @"searchText", nil]; [aSearchQueue cancelAllOperations]; SearchOperation *searchOp = [[SearchOperation alloc] initWithDelegate:self dataDict:searchdict]; [aSearchQueue addOperation:searchOp]; } And my search is rather straight forward. SearchOperation is a subclass of NSOperation. I overwrote the main method with the following code: - (void)main { if ([self isCancelled]) { return; } NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"MyEntity" inManagedObjectContext:managedObjectContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:entity]; NSPredicate *predicate = NULL; predicate = [NSPredicate predicateWithFormat:@"(someattr contains[cd] %@)", searchText]; [fetchRequest setPredicate:predicate]; NSError *error = NULL; NSArray *fetchResults = [managedObjectContext executeFetchRequest:fetchRequest error:&error]; [fetchRequest release]; if (self.delegate != nil) [self.delegate didFinishSearching:fetchResults]; [pool drain]; } This code works, but it has several issues. It's slow. Even though I have the search happening in a separate thread other than the UI thread, querying 17,000 objects is clearly not optimal. If I'm not careful, crashes can happen. I set the max concurrent searches in my NSOperationQueue to 1 to avoid this. What else can I do to make this search faster? I think preloading all 17,000 objects into memory might be risky. There has to be a smarter way to conduct this search to give results back to the user faster.

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  • How to use fiddler to customize google search results

    - by user23950
    I have previously asked this question, but the one who answered did not answer the question in a way a beginner could understand. http://superuser.com/questions/118144/customize-search-results-in-google I have already installed fiddler and I have saved a google search results with no results returned. By searching this: "+" What would be the next step in fiddler?

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  • sed: delete text between a string until first occurrence of another string

    - by Marit Hoen
    Imagine I have something like the following text: The quick brown fox jumps in 2012 and 2013 And I would wish to delete the part from "fox" including the four numbers but only in the first occurrence so I end up with: The quick brown and 2013 Something likes this...: echo "The quick brown fox jumps in 2012 and 2013" \ | sed "s/fox.*\([0-9]\{4\}\)//g" ...brings me: The quick brown So it removed everything including the last occurrence of the four numbers. Any ideas?

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  • FULL global search on Palm Pre [closed]

    - by JoelFan
    The so-called "global search" on Palm Pre (where you start typing characters into the launcher) only finds contacts of what you're searching is the title of the contact. It won't find it if it's inside the details of the contact. How do I really globally search the contacts?

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  • How to enable utf-8 in xpdf outline pane and search

    - by Thanos D. Papaïoannou
    Xpdf version 3.02 downloaded from the Ubuntu repositories and run on Ubuntu 8.04.3 replaces greek utf-8 characters with blank characters in the outline pane, i.e. the bookmark pane, and in the search window. In particular, it is impossible to search for greek words in documents. Is there a way to enable utf-8 support in xpdf so that 1. and 2. above work properly? Thanks!

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  • Fast way to search stackoverflow.com using google

    - by eSKay
    Everytime I have to search something on stackoverflow.com using Google I have to type the rather long <search term> site:stackoverflow.com Is there some way to speedup the process, so that I need not type the whole 23 characters of site:stackoverflow.com each and every time? I am using Google Chrome.

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  • Very slow first handshake Apache

    - by Johan Larsson
    Any one having any ideas where should I start to fix this issue, the first handshake take sometimes up to 20s, but refreshes after that takes only 0.9s. The setup, 100/10 Mbps Windows OS 4GB RAM Intel Core 2 @ 3.0 GHz And 7200 RPM HDD Apache 2.4 No SSL Mod_Security Enabled Mod_Deflate Enabled Mod_Expires Enabled Mod_ReWrite Enabled PHP & MySQL on same machine. I have seen much slower machines preforming better, therefor I think my problem is ony an optimization issue.

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  • Do I have to install WSS first to use MOSS07

    - by elhombre
    Hi all I just spoke with an college about SharePoint, he then mentioned that I would have to install WSS first and then install SharePoint 2007 ontop of that. Is this true? I always understood that the whole SharePoint architecture is build upon WSS, so when installing SharePoint 2007 WSS is automatically installed because without it, it wouldn't even work!?

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  • Language for google search field in firefox toolbar is wrong

    - by Andrew
    I've got a fresh install of Ubuntu 9.10 (64 bit) and for some reason the Google search field in the Firefox toolbar always searches google.jp. Given that I'm in Australia and struggle to read Japanese this is somewhat less than useful to me. Does anyone know how I can change the language/Google site that search field uses?

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  • Is exFAT safe to unplug without unmounting first?

    - by romkyns
    I'm hitting the 4GB limit of FAT32 on USB drives more and more often. However, being able to unplug the device without unmounting it first is a must have for me. I've noticed exFAT recently, however I couldn't find any info on whether drives formatted with exFAT can be unplugged safely without unmounting. Can they?

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  • Stop Search param in directories by grep immediately after param match

    - by yael
    hi friends I use the following command to find under /var some param in my script grep -R "param" /var/* 2/dev/null |grep -wq "param" my problem is that: after grep find the param in file grep continue to search until all searches under /var/* will completed How to perform stop immediately after grep match the param word For example when I run the: grep -R "param" /var/* 2/dev/null |grep -wq "param" grep find the param after one second. But grep continue to Search other same param on other files and its take almost 30 seconds How to stop the grep immediately after param match? THX

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  • recommendation for good chassis (case) for first time PC builder

    - by studiohack
    I've been thinking about building my own machine for some time now, and whenever I look at the PC case market, it seems like cases are a dime-a-dozen. As a result, I'm wondering what cases Super Users would recommend in the areas of ease of use, cable management, cooling, etc...in other words, an all-around case for a first time PC builder. Thanks!

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