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• Are MongoDB and CouchDB perfect substitutes?

  - by raoulsson

  I haven't got my hands dirty yet with neither CouchDB nor MongoDB but I would like to do so soon... I also have read a bit about both systems and it looks to me like they cover the same cases... Or am I missing a key distinguishing feature? I would like to use a document based storage instead of a traditional RDBMS in my next project. I also need the datastore to handle large binary objects (images and videos) automatically replicate itself to physically separate nodes rendering the need of an additional RDBMS superfluous Are both equally well suited for these requirements? Thanks!

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• Function chaining depending on boolean result

  - by Markive

  This is just an efficiency question really.. I'm interested to know if there is a more efficient or logical way that people use to handle this sort of scenario. In my asp.net application I am running a script to generate a new project my code at the top level looks like this: Dim ok As Boolean = True ok = createFolderStructure() If ok Then ok = createMDB() If ok Then ok = createProjectConfig() If ok Then ok = updateCompanyConfig() I create a boolean and each function returns a boolean result, the next function in this chain will only run if the previous one was successful. I do this because an asp.net application will continue to run through the page life cycle unless there is an unhandled exception and I don't want my whole application to be screwed up if something in the chain goes wrong (there is a lot of copying and deleting of files etc.. in this example). I was just wondering how other people handle this scenario? the vb.net single line if statement is quite succinct but I'm wondering if there is a better way?

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• Could not find generator mini_test:install

  - by David James

  I expected these generators to be available: $ rails g Usage: rails generate GENERATOR [args] [options] MiniTest: mini_test:controller mini_test:helper mini_test:install mini_test:mailer mini_test:model mini_test:scaffold So I ran: $ rails g mini_test:install But got this error: Could not find generator mini_test:install. As for my environment, here is the relevant portion of my Gemfile: group :test, :development do gem 'minitest-rails' end And the resulting portions of my Gemfile.lock: minitest (2.12.1) minitest-rails (0.0.7) minitest (~> 2.12) rails (~> 3.1) I am now in the process of debugging this. I would appreciate any tips. In any case, I will report back.

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• Question about SSL Certificate.

  - by smwikipedia

  Hi experts, I am trying to make a SSL connection to a web site. Each time I enter the https:// address and press enter, the IE8 prompts me to select the Certificate (Client Certificate) to send to the server. I got 2 certificates to choose from. And they are stored in the IE8 - Internet Options - Content - Certificates - Personal. Since my server and client are the same machine, I want to use a single certificate for both server and client. And this certificate is a IIS generated self signed certificate. I do the following steps: 1- Generate a self-signed-cert in IIS; 2- Bind my site to https and choose the above self-signed-cert 3- Import the self-signed-cert at the IE8 - Internet Options - Content - Certificates - Personal. Then I use the https link to access my page, it is still prompts me to choose a certificate. But I cannot see my newly imported self-signed-cert. Why?

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• Query to add a column depending of outcome of there columns

  - by Tam

  I have a user table 'users' that has fields like: id first_name last_name ... and have another table that determines relationships: user_id friend_id user_accepted friend_accepted .... I would like to generate a query that selects all the users but also add another field/column say 'network_status' that depends on the values of user_accepted and fiend_accepted. For example, if user_accepted is true friend_accepted is false I want the 'network_status' field to say 'request sent'. Can I possibly do this in one query? (I would prefer not to user if/else inside the query but if that's the only way so be it)

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• How to programmatically click on a EIT Lightbox hyperling in asp.net

  - by CruelIO

  Hi On my webpage Im using EIT Lightbox to display images. I need to click on the Lightbox hyper link by code. I have tried the following body.Attributes.Add("onLoad", "document.getElementById(\"lbh1\").click()\n"); body.Attributes.Add("onload", "eval(document.getElementById(\"lbh1\").href);\n"); But neither seems to work. If I use the following code body.Attributes.Add("onload", "alert('popup');\n"); The alert is displayed Is there another way to do the click?

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• A tool to determine jar dependencies based on existing code?

  - by geoffeg

  Is there a tool that can determine .jar dependencies given a directory of .jar files and a separate directory of java source code? I need to generate Eclipse .classpath files based on an existing code base that doesn't have any dependencies defined. To be more specific, I've been given a large codebase consisting of a dozen or so J2EE-style projects and a single directory of jar files. My client uses a custom development and build framework that is just too arcane for me to use and get any real work done. The projects do not have any information about their dependencies, either between projects or to jar libraries. I would expect this tool would have to spin through each jar file, indexing the classes available in that file and then go through each file in the project source code tree and match up the dependencies, possibly writing out a .classpath file with the required jar files. I realize this is a rather simplistic view of the operation, as duplicate classes among the jar files and such might make things more difficult.

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• character matching in grayscale image

  - by maximus

  I made patterns: images with the "A" letter of different sizes (from 12 to 72: 12, 14, .., 72) And I tested the method of pattern matching and it gave a good results. One way to select text regions from image is to run that algorithm for all small and big letters and digits of different sizes. And fonts! I don't like it. Instead of it I want to make something like a universal pattern or better to say: scanning image with different window sizes and select those regions where some function (probability of that there is a character at that window) is more than some fixed value. Do you know any methods or ideas to make that function? It must work with original image (grayscale).

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• codeigniter problem login through IE, Safari, Chrome?

  - by kamal

  hi everyone, everything works fine in localhost but i have a problem login from other browsers like safari and chrome, in firefox its ok. may be it is because of htaccess or may be other. i tried a lot searching but come to no solution. my htaccess file look like this. <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{REQUEST_URI} ^system.* RewriteRule ^(.*)$ /index.php?/$1 [L] RewriteCond %{REQUEST_URI} ^application.* RewriteRule ^(.*)$ /index.php?/$1 [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?/$1 [L] </IfModule> <IfModule !mod_rewrite.c> ErrorDocument 404 /index.php </IfModule> my server folder hirarchy looks like this public_html L application system css images .htaccess application/config/config.php looks like this $config['index_page'] = "index.php?"; $config['uri_protocol'] = 'QUERY_STRING'; any help?

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• Display list of websites on local IIS server in a web page

  - by TGuimond

  Hey Guys, I am currently trying to figure out a way to list all of the websites that are running on a local IIS 6 server at the office and display links to each site with their descriptions so we can always find our development sites with ease. The way that the server is currently set up is I add a DNS record for a new site. eg: newsite.company.local and then add it to IIS. This way all the users in our office can access this site via their browser and developers can test, admins can review etc etc. What I want to do now is automatically generate a webpage with a list of all of the sites running on iis and have it be available across the network. I have never looked into this before and have no idea where to start.. help! Thanks :)

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• MySQL Update Statement + File Upload

  - by Jason Sweet

  Greetings! Been staring at this all day and can't seem to figure out why my update statement fails to update the field 'image_filename': $fileName = $_FILES['image_filename']; if($fileName["name"] <> ""){ $imageFile = $fileName['name']; $destination = "../../../../assets/resources/images/".$fileName['name']; move_uploaded_file($fileName['name'], $destination); } $updateSQL = sprintf("UPDATE content SET image_filename='$imageFile' WHERE id=%s", GetSQLValueString($_POST['resource_id'], "int")); mysql_select_db($database_conn_talent, $conn_talent); $Result1 = mysql_query($updateSQL, $conn_talent) or die(mysql_error()); Can a SQL pro tell me what I"m missing? Much thanks in advance for your feedback!

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• Optimum php.ini and my.cnf settings for a small Drupal 7 site on a virtual server

  - by the other dude

  I looking for advice on how to set up the default configuration of php.ini and my.cnf for a small site (100 pages) with very little traffic (300 visitors per day). All pages have a bit of text, some images, no video, no audio, no flash/silverlight, very little javascript and jquery. For tracking I'm using GA and Piwik. The main site database is around 50MB. The site is hosted on a virtual server with 20GB RAM and 6 vCPUs so there's hopefully a lot of muscle to make it run very fast. I don't know much about tweaking php and mysql settings and would appreciate it if your answers can be as detailed as possible. Thanks

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• Under what circumstances would a Ruby $LOAD_PATH be acquired from a parent process?

  - by Dr Nic

  In my cucumber scenarios, if I call rake db:schema:load within a target Rails app folder, I get the cucumber process's $LOAD_PATH and not the Rails app's own Gemfile/load path. I think this is very weird. The consequence is that I get the following error: no such file to load -- rails/all I can't reproduce it outside of my cucumber scenario. ruby -rubygems -e "system 'rake -T'" works normally - the 'rake -T' has the application's own Gemfile-based $LOAD_PATH; and doesn't generate the error above. Can anyone think why a child process (rake -T or rake db:schema:load or rails runner...; invoked by either system, exec, %x[...] or backtick; would start with the parent processes' $LOAD_PATH (from the cucumber scenario's Gemfile) instead of its own $LOAD_PATH (from the Rails app's Gemfile)?

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• generating function arguments in java

  - by aloishis89

  I'm very new to java and am working on my first Android app. I am using the webview demo as a template. I am trying to generate a random integer between 1 and 12 and then call a certain javascript function based on the result. Here's what I have: int number = 1 + (int)(Math.random() * ((12 - 1) + 1)); number = (int) Math.floor(number); String nextQuote = "javascript:wave" + number + "()"; mWebView.loadUrl(nextQuote); So mWebView.loadUrl(nextQuote) will be the same as something like mWebView.loadUrl("javascript:wave1()") I just want to know if what I have here is correct and will work the way I think it will. The application isn't responding as expected and I suspect this bit of code is the culprit.

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• How can an Android Service know that its not bound to any Activities

  - by tunneling

  I have an Android Service that I would like to keep running even after the last Activity has been popped off the stack, or the User has chosen to do something else. Essentially the Service is listening for changes on a remote server, and I would like to generate a Notification if and only if an Activity from the app isn't running(or visible). In other words, I don't want the Notifications to occur while the User is directly interacting with the app. In the case where the User is directly interacting with the app, the Service will notify the Activity and update appropriate UI elements based on the changes. I plan to implement this through the Observer pattern. How can the Service know if none of apps Activities are bound to it? Thanks, J

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• ImageView.setImageURI does NOT work when trying to assign a R.drawable.X Uri

  - by Qlimax

  is related to: http://stackoverflow.com/questions/2307374/need-suggetsion-about-a-mixed-uri-int-id-images-ambient now my problem is that: ImageView imgView=(ImageView)findViewById(R.id.imgView); Uri imgUri=Uri.parse("android.resource://my.package.name/"+R.drawable.image); imageView.setImageURI(imgUri); does NOT work . why? i know that imgView.setImageDrawable(Drawable.createFromStream( getContentResolver().openInputStream(imgUri), null)); work. but that does NOT solve my problem. because I want to set the image with an uri independenty if this come from a resource or come from the camera ACTION_PICK intent... any suggestions are welcome. Thank you. Regards

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• Can Eclipse not hard-code ECLIPSE_HOME when exporting build.xml?

  - by stevex

  I have an Eclipse project that I'm attempting to set up to build both with Eclipse and externally with Ant. It seems like a good way to do this is to have Eclipse generate a build.xml file that I can then use with ant. I'd like to set it up so the build.xml can be regenerated from Eclipse whenever the need arises, which means no hand-editing the build.xml file. But Eclipse writes one entry in there that has a hard-coded path to a directory on my computer, which makes it unsuitable for checking in to a source repository. Specifically it's this entry that's the trouble: <property name="ECLIPSE_HOME" value="D:/Eclipse/Eclipse Galileo (3.5) SR1"/> Is there some way to have Eclipse not output this line, or to make it a relative reference or something that makes sense to check in?

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• Referencing surrogate key

  - by Arman

  I have a table that has an autoincrement surrogate key. I want to use it as a foreign key of my other table. The thing is, I cant figure out how I can reference it to that table, because it is nearly impossible to determine what I have to reference(the actual value of the surrogate key). Please be noted that what I am trying to do is adding a tuple/record through my program(outside the dbms). The process is: Add a new record in Table1 and generate an autoincrement key. Update Add a new record in Table2 and reference its foreign key to the primary key of Table1. Update My question is : HOW do I store the foreign key if I didnt know what is it?

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• What technology should I use for a complex report?

  - by SeaDrive

  I have a task to generate reports from a Visual Studio C# application. This is a replacement (caused by new requirements) for a program written using the built-in implementation of Crystal Reports. Although workable, it was far from ideal. The reports have conditional content (If type=1, print this, if type=2 print that.) Crystal does not adjust spacing dynamically and the various pieces were not the same length making for some unprofessional-looking spacing. I had thought of generating the reports in HTML, which would be feasible, but I'm concerned that you lose a degree of control, and I may be asked, e.g. to "move this up a bit" or similar which may be tricky. I'm not either a Crystal guru or an HTML guru. What other reporting technologies are available that would make it easy to drop in parts of different sizes, do table layouts, etc.?

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• Jquery Slider PNG black borders IE8

  - by Thomas

  Greetings, I'm having a lot of trouble with the IE8 buy of getting black borders when using a JQUERY slider, with PNG transparent images. Using a slightly modified version of the Nivio slider. I have searched high and low for fixes and blocks of code but so far none have worked. What happens is that as soon as the img cycles it gets the black border and looks like shit (only in IE8). Does anyone know a working fix for this? Or do we just have to ban IE from all computers?

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• Apache Rewrite Excluding Assets Directory

  - by Midiane

  Hi all I'm writing a mini-MVC application. App architecture: actions/ templates/ site/ app/ styles/ images/ scripts/ So far, I've got a controller working properly, taking in all requests. However, javascript files are not being rendered properly in the browser; I'm getting a 404 Not Found when I try to load the file in the browser. Here is my current Directory config in a vhost file: DirectoryIndex index.php RewriteEngine On RewriteBase /apps/ecatalogue RewriteRule ^scripts/(.*) - [NC,L] <--- Rule not working RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php [NC,L,QSA] I can confirm everything else works; I just need apache to ignore anything in scripts so the file can be loaded normally without being processed by the controller. Your help is appreciated.

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• Black flicker while resizing translucent Qt widget (only when Aero is enabled)?

  - by D.

  I have a top-level Qt widget with the FramelessWindowHint flag and the WA_TranslucentBackground attribute set. It has several children, each of which draws an image on it. They are not in a layout. Instead, I simply move them around when something changes (it is not user-resizable). There are two states to the window - a big state and a small state. When I switch between them, I resize the window and reposition the children. The problem is that as the window resizes, a black box is briefly flashed on the top-level window before the images are painted over it. The problem goes away if I disable Aero. I found brief mention of this problem being fixed in an article describing a new release of Qt (this release is long past), but it still doesn't work. Any ideas why? Thanks!

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• 2D pixel array rotation and scaling

  - by Betamoo

  Hi I am working on C# program to process images ( given as int[,] ).. So I have 2D array of pixels, and I need to rotate them around a point, then scale them down to fit the original array.. I already found articles about using matrix to transform to a point and rotate then transform back.. What remains is to scale the resultant image to fit an array of original size.. How that can be done? (preferably with 2 equations one for x and one for y ) Thanks in advance

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• Displaying form validation errors in a template (Symfony)

  - by Jay

  Hi, let's say I have a blog with a module "post". now I display a post like this: post/index?id=1 in the index-action i generate a new CommentForm and pass it as $this-form to the template and it is being displayed at the bottom of a post (it's just a textfield, nothing special). form action is set to "post/addcomment". How can I display the validation errors in this form? using setTemplate('index') doesn't work because I would have to pass the id=1 to it... thanks

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• Margin adjustments when using ggplot's geom_tile()

  - by chris_dubois

  From the documentation for ggplot2's geom_tile() function, we have the following simple plot: > # Generate data > pp <- function (n,r=4) { + x <- seq(-r*pi, r*pi, len=n) + df <- expand.grid(x=x, y=x) + df$r <- sqrt(df$x^2 + df$y^2) + df$z <- cos(df$r^2)*exp(-df$r/6) + df + } > p <- ggplot(pp(20), aes(x=x,y=y)) > > p + geom_tile() How do I remove the margins that border the tile?

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