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  • mysql join on two indexes takes long time!!

    - by Alaa
    Hi All I have a custom query in dripal, this query is: select count(distinct B.src) from node A, url_alias B where concat('node/',A.nid)= B.src; now, nid in node is primary key and i have made src as an index in url_alias table. after waiting for more than a minute i got this: +-----------------------+ | count(distinct B.src) | +-----------------------+ | 325715 | +-----------------------+ 1 row in set (1 min 24.37 sec) now my question is: why did this query take this long, and how to optimize it?? Thanks for your help

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  • Python: Lits containg tuples and long int.

    - by Yasmin
    I have a list containing a tuples and long integers the list looks like this: table = [(1L,), (1L,), (1L,), (2L,), (2L,), (2L,), (3L,), (3L,)] How do i convert the table to look like a formal list? so the output would be: table = ['1','1','1','2','2','2','3','3'] For information purposes the data was obtained from a mysql database.

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  • Communication framework recommendation

    - by Benny
    I have two applications, and one is keeping sending live images to the other and it need to be long-running. WCF - is it suitable? TCP/IP directly? Service bus, NServiceBus? Is there any better alternative for this communication?

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  • How to generate a LONG guid?

    - by Ron
    I would like to generate a long UUID - something like the session key used by gmail. It should be at least 256 chars and no more than 512. It can contain all alpha-numeric chars and a few special chars (the ones below the function keys on the keyboard). Has this been done already or is there a sample out there? C++ or C#

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  • Long task in Javascript / jQuery

    - by Misha Moroshko
    I have a long task in Javascript that should be performed before the web page content is displayed. During the execution of this task I would like to show an image whose opacity will grow up to 100% (when the task is done). How this can be achieved ?

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  • How to implement context menu on key press instead of long click/tap

    - by takyon
    I have a ListActivity and I want to implement context menu for each of the list elements. I know that the common way to do this is to show the context menu on long click/tap. I want to know if there is a way to show the context menu for each element on a key press(preferably the menu key). To rephrase my question, how can I trigger the context menu and not the options menu by pressing the menu key(or any other key).

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  • Tweet blender takes a long time to show tweets

    - by mkoso
    On my wordpress site I have tweet blender plugin to show twitter tweets. Everything is ok except for some resason it takes a long time to show the tweets on my site. When tweet it takes anything between 15-70 minutes to show on my site. Any idea why is that? Everything should setted right.

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  • Where does getopt_long store an unrecognized option?

    - by Rob Kennedy
    When getopt or getopt_long encounters an illegal option, it stores the offending option character in optopt. When the illegal option is a long option, where can I find out what the option was? And does anything meaningful get stored in optopt then? I've set opterr = 0 to suppress the automatically printed error message. I want to create my own message that I can print or log where I'd like, but I want to include the name of the unrecognized option.

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  • Rendering a Long Document on iPad

    - by benjismith
    I'm implementing a document viewer with highlighting/annotation capabilities for a custom document format on iPad. The documents are kind of long (100 to 200 pages, if printed on paper) and I've had a hard time finding the right approach. Here are the requirments: 1) Basic rich-text styling: control of left/right margins. Control of font name, size, foreground/background color, and line spacing. Bold, italics, underline, etc. 2) Selection and highlighting of arbitrary text regions (not limited to paragraph boundaries, like in Safari/UIWebView). 3) Customization of the Cut/Copy/Paste popup (what is that thing called anyhow? UIActionBar?) This is one of the essential requirements of the app. My first implementation was based on UIWebView. I just rendered the document as HTML with CSS for text styling. But I couldn't get the kind of text selection behavior I wanted (across paragraph boundaries) and the UIActionBar can't be customized from within UIWebView. So I started working on a javascript approach, faking the device text-selection behavior using JQuery to trap touch events and dynamically modifying the DOM to change the background color of selected regions of text. I built a fake UIActionBar control as a hidden DIV, positioning it and unhiding it whenever there was an active selection region. Not too shabby. The main problem is that it's SLOOOOOOOW. Scrolling through the document is nice and quick, but dynamically changing the DOM is not very snappy. Plus, I couldn't figure out how to recreate the magnifier loupe, so my fake text-selection GUI doesn't look quite the same as the native implementation. Also, I haven't yet implemented the communication bridge between the javascript layer and the objective-c layer (where the rest of the app lives), but it was shaping up to be a huge hassle. So I've been looking at CoreText, but there are precious few examples on the web. I spent a little time with this simple little demo: http://github.com/jonasschnelli/I7CoreTextExample/ It shows how to use CoreText to draw an NSAttributedText string into a UIView. But it has its own problems: It doesn't implement text-selection behavior, and it doesn't present a UIActionBar, so I don't have any idea how to make that happen. And, more importantly, it tries to draw the entire document all at once, with significant performance degradations for long documents. My documents can have thousands of paragraphs, and less than 1% of the document is ever on screen at a time. On the plus side, these documents already contain precise formatting information. I know the exact page-position of every line of text, so I don't need a layout engine. Does anyone know how to implement this sort of view using CoreText? I understand that a full-fledged implementation is overkill for a question like this, but I'm looking for a good CoreText example with a few basic requirements: 1) Precise layout & formatting control (using the formatting metrics and text styles I've already calculated). 2) Arbitrary selection of text. 3) Customization of the UIActionBar. 4) Efficient recycling of resources for off-screen objects. I'd be happy to implement my own recycling when text elements scroll off-screen, but wouldn't that require re-implementing UIScrollView? I'm brand-new to iPhone development, and still getting used to Objective-C, but I've been working in other languages (Java, C#, flex/actionscript, etc) for more than ten years, so I feel confident in my ability to get the work done, if only I had a better feel for the iPhone SDK and the common coding patterns for stuff like this. Is it just me, or does the SDK documentation really suck? Anyhow, thanks for your help!

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  • Long held AJAX connections being blocked by Anti-Virus

    - by jeffreyveon
    Ok, this is downright bizarre. I am building a web application that relies on long held HTTP connection using COMET, and using this to stream data from the server to the application. Now, the problem is that this does not seem to go well with some anti-virus programs. We are now on beta, and some users are facing problems with the application when the anti-virus is enabled. It's not just one specific anti-virus either.. I found this work around for Avast when I looked online: http://avricot.com/blog/index.php?post/2009/05/20/Comet-and-ajax-with-Avast-s-shield-web-:-The-salvation-or-not However, anyone here has any suggestions on how to handled this? Should I send any specific header to please these security programs?

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  • C#: Multiline TextBox with TextBox.WordWrap Displaying Long Base64 String

    - by Peter Lee
    Hi, Happy New Year! I have a textbox to display a very long Base64 string. The TextBox.Multline = true and TextBox.WordWrap = true. The issue is caused by the auto-word-boundary detection of the TextBox itself. The Base64 string has '+' as one of the 64 characters for Base64 encoding. Therefore, the TextBox will wrap it up at the '+' character, which is not what I want (because the use might think there is a newline character around the '+' character). I just want my Base64 string displayed in Mulitline-mode in TextBox, but no word boundary detection, that is, if the TextBox.Width can only contain 80 characters, then each line should have exact 80 characters except the last line. I'm not sure if I made myself clear. Thanks. Peter

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  • VisualForce: convert carriage returns to html line-breaks in a long text field

    - by codeulike
    In Salesforce, if I'm binding a text field into a VisualForce page, whats a good way to convert the carriage returns in the text-field into HTML <br/> tags? e.g. starting from something like this: <apex:page standardController="Case"> <apex:pageBlock title="Test"> <p>{!case.Description}</p> </apex:pageBlock> <apex:detail relatedList="false" /> </apex:page> ... if the Description is very long with lots of carriage returns, how do I HTML-ify it? (I guess this is a fairly easy question, and I'm sure I could google it, but to get the Salesforce community going on here I figure we need a few easy questions.)

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  • asp.net connection reset with long running process

    - by Ronnie Overby
    In an asp.net web form, I keep getting a connection reset error message. The page is doing a some long running processing (about 2-5 minutes). I have no problem when the web request comes from the same machine as the web server. But when the request originates across the network, I get a connection reset error about 1:30 or 2 minutes into waiting for a response. I have set the in web.config for this application and put the application it's own application pool. What else can I try?

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  • How to calculate short & long distance via Haversine?

    - by Jeroen
    Hi, I am looking for a way to calculate the distance between 2 points on the globe. We've been told to use Haversine, which works fine to calculate the shortest distance between the 2 points. Now, I'd like to calculate the "long distance" between to points. So suppose you have 2 cities, A in the west and B in the east. I want to know the distance from B to A if I would travel eastwards around the globe and then reach A coming from the west. I've tried changing a couple of things in the haversine function, but doesn't seem to work. Anyone know how I can simply do this using small adjustments to the haversine function? This is what I'm using now: lat1, lat2, lng1, lng2 are in radians part1 = sin(lat2) * sin(lat1); part2 = cos(lat2) * cos(lat1) * cos(lng1 - lng2); distance = EARTH_RADIUS * acos(part1 + part2); Tnx Jeroen

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  • Keep-alive for long-lived HTTP session (not persistent HTTP)

    - by stackoverflowuser2010
    At work, we have a client-server system where clients submit requests to a web server through HTTP. The server-side processing can sometimes take more than 60 seconds, which is the proxy timeout value set by our company's IT staff and cannot be changed. Is there a way to keep the HTTP connection alive for longer than 60 seconds (preferably for an arbitrarily long period of time), either by heartbeat messages from the server or the client? I know there are HTTP 1.1 persistent connections, but that is not what I want. Does HTTP have a keep-alive capability, or would this have to be done at the TCP level through some sort of socket option?

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  • SQL Server Reporting Services - Fast TimeDataRetrieval - Long TimeProcessing

    - by user197529
    An application that I support has recently begun experiencing extended periods of time required to execute a report in SQL Server Reporting Services. The reports that are being executed are not terribly complex. There are multiple stored procedures (between 5 and 8) which return anywhere from a handful to 8000 records total. Reports are generally from 2 to 100 pages. One can argue (and I have) the benefit of a 100 page report, but the client is footing the bill. At any rate, the problem is that even the reports with 500 records (11 pages) being returned takes 5 minutes to return to the browser. In the execution log the TimeDataRetrieval is 60 seconds, but the TimeProcessing is 235 seconds. It seems bizarre to me that my query runs so quickly, but it takes Reporting Services so long to process the data. Any suggestions are greatly appreciated. Kind Regards, Bernie

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  • Decrypting “long” message encrypted with RSA java

    - by Denis
    Hi this is the same question, that was asked two years ago: Java/JCE: Decrypting “long” message encrypted with RSA I had a large byte array and rsa keypair, initiated by value 1024. Using rsa encryption and the specified size of the key is strong requirement, I can't change it. So I can't use symmetric encryption with asymetric encryption symmetric key. I can't use any other keys. I had a byte array and need ciphered byte array to be returned. I wonder if there is any ready tool, that can manage with this problem? Sorry for such an amateurish question, but I really need a help.

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