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  • MySQL command-line tool: How to find out number of rows affected by a DELETE?

    - by ambivalence
    I'm trying to run a script that deletes a bunch of rows in a MySQL (innodb) table in batches, by executing the following in a loop: mysql --user=MyUser --password=MyPassword MyDatabase < SQL_FILE where SQL_FILE contains a DELETE FROM ... LIMIT X command. I need to keep running this loop until there's no more matching rows. But unlike running in the mysql shell, the above command does not return the number of rows affected. I've tried -v and -t but neither works. How can I find out how many rows the batch script affected? Thanks!

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  • Crystal Reports - Facilitating front/back printing

    - by hamlin11
    I have a crystal report that is designed to spit out a bunch of reports. Each report is 2 to 7 pages in length. We would like to print on the front and back of pages. However, if we did this now... approximately half of the following reports would print on the back of the last past of the preceding report. Is there a good method for detecting whether an extra page break should be inserted, and if so, actually inserting it, so that when we print the 150 pages front/back that now one piece of paper actually holds data from separate reports? Thanks

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  • How do I change careers to become a programmer without spending a lot of money

    - by bgc83
    I'm currently a network engineer, but find myself wanting to get into the world of development. I took a little bit of Java in college, am 27 years old and have been network engineering for 4 years now. I have a mortgage and student loans so going back to school would be difficult. I'm willing to put in however much hardwork is needed around my full time job to learn, but part of me feels I may need actuall schooling to get down some of the advanced concepts. Just looking for a little advice and direction. I have purchased a bunch of the Head First programming books and have begun reading through some of them as I figure out my way into this transition.

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  • VS2008 - 'Set as startup project' setting dissapearing.

    - by UpTheCreek
    I have a solution with a bunch of projects in it. The 'startup' project is a ASP.NET MVC Web Application. I set as the startup project (by right clicking on it in Solution Explorer and selecting 'set as startup project'. The project title goes bold and everything works fine for a while. Then I will be editing one of the supporting projects, and come to click the 'Start Debugging' button, and bang - the 'project of this type cant be started' message. I then check, and the web project is no longer set as the startup project. And so on.... Anyone know why this is happening?

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  • BASH: Checking for environment variables

    - by Hamza
    Hi folks, I am trying to check the value of an environment variable and depending on the value do certain things and it works fine as long as the variable is set. When it isn't though I get a whole bunch of errors (as BASH is trying to compare the string I specify with an undefined variable, I guess) I tried implementing an extra check to prevent it happening but no luck. The block of code I am using is: #!/bin/bash if [ -n $TESTVAR ] then if [ $TESTVAR == "x" ] then echo "foo" exit elif [ $TESTVAR == "y" ] then echo "bar" exit else echo "baz" exit fi else echo -e "TESTVAR not set\n" fi And this the output: $ export TESTVAR=x $ ./testenv.sh foo $ export TESTVAR=y $ ./testenv.sh bar $ export TESTVAR=q $ ./testenv.sh baz $ unset TESTVAR $ ./testenv.sh ./testenv.sh: line 5: [: ==: unary operator expected ./testenv.sh: line 9: [: ==: unary operator expected baz My question is, shouldn't 'unset TESTVAR' nullify it? It doesn't seem to be the case... Thanks.

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  • Can I store and join based on external attributes in Lucene/Solr

    - by Kibbee
    Is there a way to store information about documents that are stored in Lucene such that I don't have to update the entire document to update certain attributes about the documents? For instance, let's say I had a bunch of documents, and that I wanted to update a permissions list of who was allowed to see the documents on a daily, or more frequent, basis. Would it be possible to update all the permissions each day, without updating all the documents. I could do it by keeping a exactly which permissions were added and removed, but I would rather just be able to take the end list of permissions, and use that, rather than have to keep track of all the permission changes and post those entire documents to Lucene.

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  • Anyone know how do i get the real time feeds on gas station price in US via webservice version?

    - by tomtom
    Hi, Anyone has pointers on how to get real time US gas station feeds via webservice ? I'm trying to develop an iphone app that give users real time gas station price near their location. Currently i was wondering is there a legit government service that produce real time gas station price in the US on a daily basis? I heard about http://gasbuddy.com/ but i don't know where they get the data source from and was not sure if i should base on their data as well. On the other hand, there is a bunch of iphone apps on the apple store that show the gas price info. I'm clueless on how did the developers got their source from to get the nearest gas station price locations. Anyone has any suggestion? Thanks for the info :- )

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  • 500 error on https, site loads fine [closed]

    - by jetlej
    Using http://web-sniffer.net/, I'm seeing a 500 internal error when accessing the https://www version of my site (https://moblized.com). However that URL loads perfectly fine with no errors. I was checking this because Google Webmaster is showing a bunch of 500 errors on my site. Also just noticed that I get a 200 success error if sniffing with HTTP 1.0, but a 500 with HTTP 1.1 Note: All other URL versions 301 redirect to https://www, eg. http://www , https:// , http:// FIXED: For any curious parties, there was one PHP bug that was causing a fatal error, but was still allowing the page to load. Turning on php_debug helped...

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  • process incoming mail and parse out original text

    - by florin
    I have inherited a rails forum (Rails 2.3.2 I think) that alerts people of new posts/replies for the forums or threads they are watching. To make it easier for people to answer to threads I would like to enable reply-to-post, similar to basecamp and a bunch of other forums and tools out there. I would add a separator text (like "----add your reply above this line-----") in the original email. I need to: - process incoming email - extract the new text (above the separator line) - ideally strip out text like "on ... [email protected] wrote:" that is automatically added by some mail clients - identify the thread this email is referring to (either using the incoming address or the subject line) - identify the sender - post the content as new reply Any suggestions on how to get started? Any good plugins for this? I've seen many mentioning Mailman and Fetcher, are there any other and which one is the best for this little feature? Thanks!

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  • How to grab the lines AFTER a matched line in python

    - by toofly
    Hi All, I am an amateur using Python on and off for some time now. Sorry if this is a silly question, but I was wondering if anyone knew an easy way to grab a bunch of lines if the format in the input file is like this: " Heading 1 Line 1 Line 2 Line 3 Heading 2 Line 1 Line 2 Line 3 " I won't know how many lines are after each heading, but I want to grab them all. All I know is the name, or a regular expression pattern for the heading. The only way I know to read a file is the "for line in file:" way, but I don't know how to grab the lines AFTER the line I'm currently on. Hope this makes sense, and thanks for the help!

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  • How to tell a UITableView to preload all Rows?

    - by Infinite
    Is there a way to tell a UITableView to preload all rows? The tableView is supposed to show several comments (up to 80 comments). So my CommentCell uses a Setter to adapt the cell to a specific comment. -(void)setComment:(Comment *)newComment { if (newComment != comment) { [comment release]; comment = [newComment retain]; /* * set the cells view variables here */ } } This specific setter takes quite a bunch of processing resources and scrolling gets kinda laggy. I am using a comment-specific reuseIdentifier instead of a static cellIdentifier when calling dequeueReusableCellWithIdentifier: in order to assure, that "newComment" equals the old "comment". And in fact this does work great when scrolling over cells which have already been loaded. But when scrolling through the comments for the first time, it still lags like hell. Which leads me to my question: Is there a way to tell the tableview to preload all cells? (which I doubt) or Do I have to implement my own cache instead of relying on "dequeueReusableCellWithIdentifier:"?

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  • Fast way to pass a simple java object from one thread to another

    - by Adal
    I have a callback which receives an object. I make a copy of this object, and I must pass it on to another thread for further processing. It's very important for the callback to return as fast as possible. Ideally, the callback will write the copy to some sort of lock-free container. I only have the callback called from a single thread and one processing thread. I only need to pass a bunch of doubles to the other thread, and I know the maximum number of doubles (around 40). Any ideas? I'm not very familiar with Java, so I don't know the usual ways to pass stuff between threads.

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  • Writing a script to bypass college login page

    - by gtredcvb
    My college has a silly login page that requires you to download a whole bunch of garbage that a lot of us don't need (Norton Anti-virus, Antispyware software, etc.). We have to have them running to get on the internet on campus. Though, if you are on Linux, or at least set your user-agent to linux, the requirements are gone. We could easily use Firefox with the useragent switcher to bypass this, but it'd be nice to create a script that automates this. How would this be possible? I figure this could be written in python, and could grab the webpage with curl specifying a user agent? How would I go about posting the data back to the servers? Thanks

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  • Asp.Net (C#) MVC Routing - Trying avoid using the same controller in different places and think rout

    - by sheefy
    Hi Guys, I'm currently building a site which has a bunch of main categories and in each category you can perform a search. Basically, I want my addresses to work like this... When the website loads (as in when someone goes to www.mySite.com) it will redirect them to the default category. www.mySite.com/Category Then when you search within a category, the results would come up in a page like the following. www.mySite.com/Category/Search I want to put everything in one controller and have one main view for the Category and one for the Search, I would then render these based on which category is currently being viewed. Can this be done, maybe with routing? I don't want to have to create a different controller for each category as it's just duplicating a lot of the code. Thanks in advance for your help.

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  • Where to reopen a class in RoR

    - by Jeriko
    I'm attempting to reopen the String class in rails and add a bunch more methods for my app to use. Writing the code isn't a problem - my question is rather about where this code should go. It doesn't make sense to me to reopen a class inside a different model file, because it really has nothing to do with any of the models specifically. I thought perhaps somewhere in config or lib would make sense, but I'm not particularly well versed with RoR yet. To summarize, where would be the most logical place to define class-modifying code?

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  • What is the effect on record size of reordering columns in PostgreSQL?

    - by Summer
    Since Postgres can only add columns at the end of tables, I end up re-ordering by adding new columns at the end of the table, setting them equal to existing columns, and then dropping the original columns. So, what does PostgreSQL do with the memory that's freed by dropped columns? Does it automatically re-use the memory, so a single record consumes the same amount of space as it did before? But that would require a re-write of the whole table, so to avoid that, does it just keep a bunch of blank space around in each record? Thanks! ~S

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  • Textfield being dequeued before textFieldDidEndEditing is called?

    - by Tony
    I am using a uitableview with a bunch of dynamically created custom cells each with a label and textfield similar to the settings app on the phone. Problem occurs when i have a lot of textfields say 20, the user selects the first textfield, changes its value then scrolls to the end of the table and selects the last textfield to edit. I get a EXEC_BAD_ACCESS in the textFieldDidEndEditing method because i think the textfield value is nil?? I think this might be happending because the 1st textfield that was being edited is being dequeued when the table is scrolled. Everything works fine if you select textfields that are next to each other. Any ideas how to fix this?

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  • Performance Impact of Generating 100's of Dynamic Methods in Ruby?

    - by viatropos
    What are the performance issues associated with generating 100's of dynamic methods in Ruby? I've been interested in using the Ruby Preferences Gem and noticed that it generates a bunch of helper methods for each preference you set. For instance: class User < ActiveRecord::Base preference :hot_salsa end ...generates something like: user.prefers_hot_salsa? # => false user.prefers_hot_salsa # => false If there are 100's of preferences like this, how does this impact the application? I assume it's not really a big deal but I'm just wondering, theoretically.

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  • Performance problem loading lots of user controls

    - by codymanix
    My application is loading a bunch of the same user control into a ScrollPanel. The problem is, this is very slow. The profiler show that the method Application.LoadComponent(), which is called internally by in the designer code in the constructor of my user control, is the bottleneck. The documentation of this method says, that this method load XAML files. I alway though the compiler compiles XAML to BAML and embedds it into the assembly. So the question is, how can I use BAML instead of XAML? Is there another way to make loading my user controls faster?

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  • Experiences with OpenLaszlo?

    - by itsmatt
    In a related question, I asked about Web Development. I came across something called OpenLaszlo yesterday and thought it looked interesting for doing some website development. The site has a bunch of good information on it and they've got some nice tutorials and such, but being a total novice (as far as web development goes), I'm wondering whether anyone here would recommend this. As I stated in my other question, this is a new world for me and there are a lot of directions I could go. Can you compare/contrast this and other web development you've done? Obviously, this is somewhat subjective, but I haven't heard much about it on SO and I'm hoping to get some opinions on this.

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  • Connecting data to a GUI - OOP

    - by tau
    I have an application with several graphs and tables on it. I worked fast and just made classes like Graph and Table that each contained a request object (pseudo-code): class Graph { private request; public function setDateRange(dateRange) { request.setDateRange(dateRange); } public function refresh() { request.getData(function() { //refresh the display }); } } Upon a GUI event (say, someone changes the date range dropdown), I'd just call the setters on the Graph instance and then refresh it. Well, when I added other GUI elements like tables and whatnot, they all basically had similar methods (setDateRange and other things common to the request). What are some more elegant OOP ways of doing this? The application is very simple and I don't want to over-architect it, but I also don't want to have a bunch of classes with basically the same methods that are just routing to a request object. I also don't want to set up each GUI class as inheriting from the request class, but I'm open to any ideas really.

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  • What do the external JSF libraries/frameworks add?

    - by kgrad
    I have seen mention of a bunch of external JSF Libraries such as ICEfaces, Richfaces, etc. However, I am unsure as to what these libraries actually add over just using JSF 2.0. Are they just additional components that are pre-built? I know that PrettyFaces adds URL rewriting, and I Believe that ICEFaces/Richfaces add Ajax enabled components? What are some other major component libraries, what are their benefits / why should people use them? Additionally, what does a framework like SEAM add over using straight JSF2 with EJB? Is MYFaces simply a different implementation of JSF?

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  • Wrapping pre-made elements using GWT?

    - by user246114
    Hi, I've been working with GWT for awhile, I can't find a way to integrate it with a preexisting website which is a real downer. My page content is already generated for me using jsp, like: <div id='A'></div> <div id='B'></div> etc. there is no way for me to do something like this though: public void onModuleLoad() { SimplePanel spA = new SimplePanel( Document.getElementById("A")); spA.add(new Label("hello")); SimplePanel spB = new SimplePanel( Document.getElementById("B")); spB.setWidth("200px"); etc .. } seems like there's no way to just wrap a pre-existing element. Is this true, or am I missing how to do this? I need be able to wrap a bunch of elements like this, to manipulate them later on. I see TextBox, Button, a few other classes have wrap() methods, however nothing like that exists for elements, Thanks

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  • CodeIgnitor is generating multiple sessions in the database, why?

    - by Derrick
    Ive got a site that does a few ajax calls on page load, now for some reason, codeIgnitor is inserting 4 sessions (I'm assuming for each ajax call) as you load the page. I'm storing the sessions in the database. I'm pretty sure there should only be one session per browser? FF seems to only generate one, other browsers seem to create a whole bunch of sessions. Multiple sessions for the same user are giving me some serious authentication problems. any ideas?

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  • Asynch operation in WinForm app

    - by TooFat
    I have a WinForms app. that when a button is clicked retrieves a bunch of data from database formats it and displays it to the end user. The operation can take 10 - 30 seconds. I would like to display a message to the user in a Dialog just saying "Be patient the operation is running" while the operation is running and then close when the data is ready to be presented to the end user. What is the best way to do this, start a new thread, use a Delegate or something else?

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