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• Where is the best place to run initialization code for a UITabBarController?

  - by bobobobo

  I have a UITabBarController in my application. I have to perform some customization to the NIB file using code the first time a view embedded in that UITabBarController gets loaded. When applicationDidFinishLaunching occurs, the UITabBarController's views apparently are not loaded -- if I try to modify the view controllers inside a tab bar that the tab bar is to load in applicationDidFinishLaunching, then those changes are ignored. I'm assuming this is because the tab bar didn't finish loading yet. So, I need a good place to put code that will run immediately after a tabbar is fully ready -- i.e. after it has loaded all the views from their respective nib files. I'm finding the only place I can do this is to track the first time viewDidAppear on each individual view controller. Note I can't use viewWillAppear because I need the value of tabBarController.selectedIndex to be accurate, and it is only actually updated after viewDidAppear gets fired, not when viewWillAppear gets fired.

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• Bitmap manipulation in C++ on Windows

  - by Oliver

  Hi, I have myself a handle to a bitmap, in C++, on Windows: HBITMAP hBitmap; On this image I want to do some Image Recognition, pattern analysis, that sort of thing. In my studies at University, I have done this in Matlab, it is quite easy to get at the individual pixels based on their position, but I have no idea how to do this in C++ under Windows - I haven't really been able to understand what I have read so far. I have seen some references to a nice looking Bitmap class that lets you setPixel() and getPixel() and that sort of thing, but I think this is with .net . How should I go about turning my HBITMAP into something I can play with easily? I need to be able to get at the RGBA information. Are there libraries that allow me to work with the data without having to learn about DCs and BitBlt and that sort of thing?

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• Python: Taking an array and break it into subarrays based on some criteria

  - by randombits

  I have an array of files. I'd like to be able to break that array down into one array with multiple subarrays, each subarray contains files that were created on the same day. So right now if the array contains files from March 1 - March 31, I'd like to have an array with 31 subarrays (assuming there is at least 1 file for each day). In the long run, I'm trying to find the file from each day with the latest creation/modification time. If there is a way to bundle that into the iterations that are required above to save some CPU cycles, that would be even more ideal. Then I'd have one flat array with 31 files, one for each day, for the latest file created on each individual day.

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• How to facet multiple columns in Google Refine

  - by banjanxed

  I have a data set with 30 columns and multiple rows (some cells have no data). I would like to be able to facet the columns in groups. 1 2 3 4..... Row1 A B C D Row2 E A D F Row3 Q A B H Given the above data I would like the facet to retun the number of instances in a group of columns. For the first three columns I need the facet to return: A - 3 B - 2 C - 1 D - 1 E - 1 Q - 1 I have tried to combine columns when I loaded the data but the individual data was grouped as well. This is not the desired outcome. For example: ABC - 1 EAD - 1 QAB - 1 Thanks in advance.

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• How to regularly merge two git repositories, one with submodules into one without

  - by smoothify

  I maintain a Drupal project in a git repository containing submodules. This works well for me overall, and I like the submodule approach. However, I would like to move my site to a hosting provider that offers deployment via git push but doesn't work with submodules. I would like to keep my current repository intact, and then when I'm ready to deploy, I would like to merge the changes from my repository into the deployment repository, but any submodules need to be exported into the tree. So, it needs to be (semi) automated, so I can just run a command or two and initiate the merge, and then push to the server. Ideally it would keep track of individual commits, but I wouldn't mind if it squashed them into a single commit. How would be the most effective way to achieve this?

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• to get columns from Excel files using Apache POI??

  - by posdef

  Hi, In order to do some statistical analysis I need to extract values in a column of an Excel sheet. I have been using the Apache POI package to read from Excel files, and it works fine when one needs to iterate over rows. However I couldn't find anything about getting columns neither in the API (link text) nor through google searching. As I need to get max and min values of different columns and generate random numbers using these values, so without picking up individual columns, the only other option is to iterate over rows and columns to get the values and compare one by one, which doesn't sound all that time-efficient. Any ideas on how to tackle this problem? Thanks,

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• Multiple Refinement/Clusters in a single search

  - by Brain Teasers

  Suppose I have options of searching are 1.occupation 2.education 3.religion 4.caste 5.country and many more. when i perform this search, i can get easily calculate refinements. problem is i need to calculate refinements in a way that for individual refinement is calculated in a manner that all search parameter is considered expect the calculated refinement check on the left side ... even i have choose the profession area, still search refinements of this is coming.... same functionality if of all refinements.Please help.I use sphinx for searching seen this type of refinements in http://ww2.shaadi.com/search

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• Updating a session variable on a page that uses enablesessionstate=readonly attribute doesn't fail f

  - by chandmk

  Asp.Net allows you you set the session state to readonly at individual page level or in the web.config for all pages. But it doesn't prevent you from creating a brand new session variable on that page or modify an existing session variable. But when you try to use that session variable it is either not available or its value is not modified. Why wouldn't the asp.net framework throw a run time error, if not compile time error, when a write attempt is made to a session on the pages where that is not allowed?

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• Next and Previous MySQL row based on name

  - by NightMICU

  Hi everyone, I have a table with details on personnel. I would like to create a Next/Previous link based on the individual's last name. Since personnel were not added in alphabetical order, selecting the next or previous row based on its ID does not work. It is a hefty table - the pertinent fields are id, name_l, and name_f. I would like to order by name_l, the individuals' last name. How would I go about accomplishing this task? Thanks!

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• top-k selection/merge

  - by tcurdt

  I have n sorted lists. These lists are quite long (300000+ tuples). Selecting the top 10 of the individual lists is of course trivial - they are right at the head of the lists. Where it gets more interesting is when I want the top 10 of all the sorted lists. The question is whether there is an algorithm to calculate the combined top 10 having the correct order while cutting off the long tail of the lists. The goal is to reduce the required space. And if there is: How does one find the limit where is is safe to cut? Note: The actual counts are not important. Only the order is.

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• Reading from the HTML DOM returns UTF-8 characters

  - by teehoo

  I have a contenteditable div where I'm reading individual characters and sending them off to a server (for more background this is similar to Google Wave where typing a character automatically sends it) I was using a plain old html textfield before and everything worked fine until I "upgraded" to a contenteditable div. My problem is that now the characters are in UTF-8 format, which is causing some weird problems on the server that I would rather not debug. It would be much easier to force everything to be ASCII on the client side. Is there any way to do this? I tried putting in a meta tag stating the html file is charset=ISO-8859-1, but it doesnt seem to work. Reading from the div tag still returns UTF-8 codes. (One example is when I press space I get the pair 0xC2 0xA0 which corresponds to a "non-breaking white space"

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• Are SqlCipher open cursors a security concern?

  - by user1178479

  I'm using SqlCipher with content providers. Right now, when I want to lock the app I just clear out the cached password. However, the app can continue to work with any open cursors. This means that re-opening the app grants access to the sensitive data. I fix this issue on the surface by redirecting to a login screen if the app doesn't have passwords. However, I'm concerned if there are any security issues with these open cursors or if I should just continue to block UI access and not worry? SqlCipher's docs say that it reads/writes encrypted pages on the fly, as opposed to decrypting the entire DB, this makes me think that open cursors are still secure. The main concern here is that someone loses their phone and then a knowledgeable individual can use these open cursors to extract sensitive data.

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• Django equivalent to paster for backend processes

  - by intractelicious

  I use pylons in my job, but I'm new to django. I'm making an rss filtering application, and so I'd like to have two backend processes that run on a schedule: one to crawl rss feeds for each user, and another to determine relevance of individual posts relative to users' past preferences. In pylons, I'd just write paster commands to update the db with that data. Is there an equivalent in django? EG is there a way to run the equivalent of python manage.py shell in a non-interactive mode?

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• Flex 3 multiple upload progress monitoring

  - by Darko Z

  I have a Flex3 application which has to be capable of uploading multiple files and monitoring each files individual progress using a label NOT a progress bar. My problem is that a generic progress handler for the uploads has no way (that I know of) of indicating WHICH upload it is that is progressing. I know that a file name is available to check but in the case of this app the file name might be the same for multiple uploads. My question: With a generic progress handler how does one differentiate between 2 multiple uploads with the same file name? EDIT: answerers may assume that I am a total newb to Flex... because I am.

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• How do I implement something like pointers in javascript?

  - by Shaun

  I know that javascript doesn't have pointers in terms of a variable referring to a place in memory but what I have is a number of variables which are subject to change and dependent on each other. For example: Center (x,y) = (offsetLeft + width/scale , offsetTop + height/scale) As of now I have rewritten the equation in terms of each individual variable and after any changes I call the appropriate update function. For example: If scale changes, then then the center, height, and width stay the same. So I call updateoffset() { offsetLeft = centerx - width/scale; offsetTop = centery - height/scale; } Is this the easiest way to update each of these variables when any of them changes?

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• Is there a suitable public license for my needs (see body)?

  - by Ivan

  I would like to license my project with the flowing conditions: Personal and educational usage of the program and its source codes is to be free. In case of publishing of derivative works the original work and author (me) must be mentioned (incl. textual link to my website in a not-very-far-hidden place) and the derivative work must have different name. A derivative work can be closed-source. In every case of commercial (when the end-user is a commercial body (as a company (expect of non-profit companies), an individual entrepreneur or government office)) usage of my work or any of derivative works made by anyone, the end-user, service provider or the derivative author must buy a commercial license from me. I mean no guarantees or resoinsibilities, either expressed or implied... (except the case when one explicitly purchases a support service contract from me and the particular contract specifies a responsibility). Is there a known common license for this case? May it be OSI-approved?

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• Screening (multi)collinearity in a reggresion model

  - by aL3xa

  I hope that this one is not going to be "ask-and-answer" question... here goes: (multi)collinearity refers to extremely high correlations between predictors in the regression model. How to cure them... well, sometimes you don't need to "cure" collinearity, since it doesn't affect regression model itself, but interpretation of an effect of individual predictors. One way to spot collinearity is to put each predictor as a dependent variable, and other predictors as independent variables, determine R2, and if it's larger than .9 (or .95), we can consider predictor redundant. This is one "method"... what about other approaches? Some of them are time consuming, like excluding predictors from model and watching for b-coefficient changes - they should be noticeably different. Of course, we must always bare in mind specific context/goal of analysis... Sometimes, only remedy is to repeat a research, but right now, I'm interested in various ways of screening redundant predictors when (multi)collinearity occurs in a regression model.

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• How would I create a technology standards document for my company?

  - by Rob O

  I'm a Director of Product Engineering for my company. My CEO has asked me to create a technology standards document, explaining things like the technology we use, our policy on adapting to new technology, and design standards like percent of code covered by unit tests. I've never had to do something like this, and I've spent a significant amount of time searching the web for examples, but I haven't found any at all. The closest I've found are documents describing technical specifications for an individual product. However, I'm trying to define this for the entire company. Can someone provide examples of how this document could be formatted/organized, and what the typical content would be? Thanks!

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• How can one close html tags in vim quickly

  - by wds

  It's been a while since I've had to do any html-like code in vim, but recently I came across this again. Say I'm doing a simple bit of a html page: <html><head><title>This is a title</title></head></html> How do I write those closing tags for title, head and html down quickly? I feel like I'm missing some really simple way here that does not involve me going through writing them all down one by one. Of course I can use ^P to autocomplete the individual tag names but what gets me on my laptop keyboard is actually getting the brackets and slash right.

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• Any open source hosting site for abandoned projects?

  - by ssg

  I have some projects which I have ceased their development a long time ago but still get code access requests for. I'm currently providing zipped packages from my personal web site. I think zipped packages are far from being useful (e.g. can't read code right away, can't provide url's to individual source files, can't fork easily, lifetime is dependent on my own web page's). I want that archaic code to be present on the net regardless I keep my web page up or not. I saw the question "What's the best open source hosting site?". However, most sites request the project "to be active", Codeplex for instance. I didn't go through EULA's of all providers to see if they allow abandoned projects. Are there elephant's graveyards for old code without activity restrictions? Which one would you pick, why?

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• nested divs should have 2 diff css styles

  - by Jean

  Hello, I have 2 nested divs, both have #x{ width:400; height:400px; background-color:#fff; color:#000 } #y{ width:200; height:200px; background-color:#000; color:#ccc; } <div id="y"><div id="x">Here lies a x value</div></div> I want the #x and #y to have individual css properties, but that is not the case, #x overrides the #y values Any help appreciated. Thanks Jean

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• Ref to map vs. map to refs vs. multiple refs

  - by mikera

  I'm working on a GUI application in Swing+Clojure that requires various mutable pieces of data (e.g. scroll position, user data, filename, selected tool options etc.). I can see at least three different ways of handling this set of data: Create a ref to a map of all the data: (def data (ref { :filename "filename.xml" :scroll [0 0] })) Create a map of refs to the individual data elements: (def datamap { :filename (ref "filename.xml") :scroll (ref [0 0]) })) Create a separate ref for each in the namespace: (def scroll (ref [0 0])) (def filename (ref "filename.xml")) Note: This data will be accessed concurrently, e.g. by background processing threads or the Swing event handling thread. However there probably isn't a need for consistent transactional updates of multiple elements. What would be your recommended approach and why?

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• SQL join from multiple tables

  - by Kenny Anderson

  Hi all We've got a system (MS SQL 2008 R2-based) that has a number of "input" database and a one "output" database. I'd like to write a query that will read from the output DB, and JOIN it to data in one of the source DB. However, the source table may be one or more individual tables :( The name of the source DB is included in the output DB; ideally, I'd like to do something like the following (pseudo-SQL ahoy) SELECT output.UID, output.description, input.data from output.dbo.description LEFT JOIN (SELECT input.UID, input.data FROM [output.sourcedb].dbo.datatable ) AS input ON input.UID=output.UID Is there any way to do something like the above - "dynamically" specify the database and table to be joined on for each row in the query?

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• jQuery .getJSON() Not Parsing All Objects

  - by Brad

  I'm using jQuery's .getJSON function to parse a set of search results from a Google Search Appliance. The search appliance has an xslt stylesheet that returns the results as JSON data, which I validated with both JSONLint and Curious Concept's JSON Formatter. According to FireBug, the full result set is returned from the XMLHTTPRequest, but I tried dumping the data (with jquery.dump.js) and it only ever parses back the first result. It does successfully get all the Google Search Protocol stuff, but it only ever sees one "R" object (or individual result). Has anybody had a similar problem with jQuery's .getJSON? I know it likes to fail silently if the JSON is not valid, but like I said, I validated the results with several validators and it should be good to go. Edit: Clicking this link will show you the JSON results returned for a search for the word "google": http://bigbird.uww.edu/search?client=json_frontend&proxystylesheet=json_frontend&proxyrefresh=1&output=xml_no_dtd&q=google jQuery only retrieves the first "R" object, even though all "R" objects are siblings.

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• InnoDB not supported by webhost. What now?

  - by Peter Perhác

  I was developing a small WAMP web application on my laptop, where I have an instance of mySQL running and I chose InnoDB for my DB engine. After several weeks' development I wanted to make it available to the public and found out the database server provided by my web host does not support InnoDB, only MyISAM. The create-and-populate script generated from the innoDB schema on my laptop, when executed against the live database, can manage to create individual TABLES but then runs into problems creating the VIEWs. Are views not supported in MyISAM? I know FOREIGN KEYs are not. That's very much why I made the choice of InnoDB... What are my chances of making my innoDB schema design work with myISAM? Is there any straightforward way of converting the whole schema from one storage engine to the other? Should I look for another web host that does provide a mysql db that supports innoDB?

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