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• String Storage and Retrieval in Android

  - by dweebsonduty

  I have a program that has items with 3 attributes. Name(String) : Count(String) : Amount(String) Currently I am writing the database when someone is trying to access a section then reading from the database. The writing is taking too long. So my question is how can I perhaps create a nested array where I can say if name = carrot then print carrot['count'] and carrot['amount']. I am very new to Java so some sample code would be great. Or any other suggestions that you may have as far as tackling this issue.

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• Show me some cool python list comprehensions

  - by christangrant

  One of the major strengths of python and a few other (functional) programming languages are the list comprehension. They allow programmers to write complex expressions in 1 line. They may be confusing at first but if one gets used to the syntax, it is much better than nested complicated for loops. With that said, please share with me some of the coolest uses of list comprehensions. (By cool, I just mean useful) It could be for some programming contest, or a production system. For example: To do the transpose of a matrix mat >>> mat = [ ... [1, 2, 3], ... [4, 5, 6], ... [7, 8, 9], ... ] >>> [[row[i] for row in mat] for i in [0, 1, 2]] [[1, 4, 7], [2, 5, 8], [3, 6, 9]] Please include a description of the expression and where it was used (if possible).

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• Rails ActiveRecord - How to set association save order

  - by Altonymous

  I have a weird relationship that needs to be maintained for legacy processes. I'm trying to figure out how to create the relationship given the new model association. New Relationship Setup Machine has_many MachineReadings has_many Disks has_many DiskReadings Old Relationship Setup Machine has_many MachineReadings has_many DiskReadings has_many Disks The problem is data will come in on the Machine model as nested attributes using the new relationship setup. I need to update the machine_reading_id in the DiskReading model so the old association can continue to be used. I tried doing this via an after_save hook that would traverse back up to the machine and then down to the readings to get the machine_reading.id so I could populate the DiskReading model. However, the associations aren't being saved in the order I would expect. They are saving the Disks & DiskReadings before saving the MachineReadings. So when I go after the machine_reading.id it hasn't been written and thus I am unable to get access to it. For example: #machine_disk_reading.rb after_save :build_old_relationship def build_old_relationship self.machine_reading_id = self.disk.machine.readings.find_by_date_time(self.date_time).id end

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• How to nest a form in an ASP.NET page (which has a form wrapped around it)

  - by Josh

  I am writing HTML to an ASP.NET page (from a web service response), and the HTML has tags. Unfortunately, because the ASP.NET page already has a wrapped around it, a lot of the buttons on the page break. Does anyone know how I can nest the form inside the ASP.NET page without breaking the top-level form? Note: the HTML I am bringing in is a form with a bunch of hidden fields inside of it, and it has to be placed within the ASP.NET page, and thus nested in the top-level form. Thanks

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• Best way to update UI from other classes?

  - by Jack

  I've got several nested classes, with the following structure: BackupLocation contains list of BackupClients BackupClients contains a list of BackupVersions BackupVersions contains a list of BackupFiles In my UI - Im populating a combo box with BackupLocations - and have several listboxes for the clients, versions, and files. When processing the BackupLocations - I can update my status bar easily because thats the top level class that the UI creates. But how can I update the status bar and progress bar on each file being processed? Since the BackupFiles are 3 levels deep, I cant see any way to update the UI. The actual processing of the files are within the BackupVersion class - which loads its files. I think it probably has something to do with events and delegates - but am unsure exactly how to proceed with this, any help would be appreciated.

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• Adding a child node to a JSON node dynamically

  - by Sai

  I have to create a nested multi level json depending on the resultset that I get from MYSQL. I created a json object initially. Now I want to add child nodes to the already child nodes in the object. d = collections.OrderedDict() jsonobj = {"test": dict(updated_at="today", ID="ID", ads=[])} for rows1 in rs: jsonobj['list']["ads"].append(dict(unit = "1", type ="ad_type", id ="123", updated_at="today", x_id="111", x_name="test")) cur.execute("SELECT * from f_test") rs1 = cur.fetchall() for rows2 in rs1: propertiesObj = [] d["name"]="propName" d["type"]="TypeName" d["value"]="Value1" propertiesObj.append(d) jsonobj['play_list']["ads"].append() Here in the above line I want to add another child node to [play_list].[ads] which is a array list again. the output should look like the following [list].[ads].[preferences].

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• How to Break out of multiple loops at once in C#?

  - by Rosarch

  What if I have nested loops, and I want to break out of all of them at once? while (true) { // ... while (shouldCont) { // ... while (shouldGo) { // ... if (timeToStop) { break; // break out of everything? } } } } In PHP, break takes an argument for the number of loops to break out of. Can something like this be done in C#? What about something hideous, like goto? // in the innermost loop goto BREAK // ... BREAK: break; break; break;

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• Is there any way to automatically prevent running out of memory?

  - by NoahY

  I am often running out of memory on my VPS ubuntu server. I wish there was a way to simply restart apache2 when it starts running out of memory, as that seems to solve the problem. Or am I just too lazy to fix the problem? I do have limited memory on the server... Okay, more information: I'm running apache2 prefork, here are my memory settings (i've been tweaking them...): StartServers 3 MinSpareServers 1 MaxSpareServers 5 MaxClients 150 MaxRequestsPerChild 1000 The VPS has 1 GB of ram, running ubuntu 11.04 32-bit. As for scripts, I have a wordpress network with 5 blogs, an install of AskBot (a python/django stackexchange clone), and an install of MediaWiki that isn't really used. There is also a homebrewed mp3 script that accesses the getid3 library to display information on lists of podcasts, and it seems to be throwing some php errors, not sure if that's the culprit...

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• Combining XmlSerializer and XmlWriter?

  - by num3ric

  In addition to a list of objects I am serializing to an xml file using C#'s XmlSerializer, I would like to store a few more independent elements (mainly strings from textboxes) in the same xml. public static void SaveBehaviors(ObservableCollection<Param> listParams) { XmlSerializer _paramsSerializer = new XmlSerializer(listParams.GetType()); string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); path += "\\test.xml"; using (TextWriter writeFileStream = new StreamWriter(path)) { _paramsSerializer.Serialize(writeFileStream, listParams); using (XmlWriter writer = XmlWriter.Create(writeFileStream)) { writer.WriteStartElement("Foo"); //test entry... writer.WriteAttributeString("Bar", "Some & value"); writer.WriteElementString("Nested", "data"); writer.WriteEndElement(); } } } However, deserializing "test.xml" results in an error because of the added element. I suppose writing in the serialized xml file is prohibited and should be avoided?

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• How can I stop Pages from bolding/italicizing ordered list item numbers/letters?

  - by donut

  I'm writing a long, technical document that uses a lot of ordered lists in Pages '09. Often when I bold or italicize the first bit of text I type for a list item it Pages applies the same styling to the letter or number of that list item. It's been doing this for the first 13 pages I've written and now I've found out that I need to undo that. Is there any place to change this behavior or easily fix existing list item numbers/letters that are styled? The only way I've found is to select the whole list item (all of its content) and removing teh styling (un-bolding and un-italicizing) and then going back in and re-applying my stylings to its content. Definitely not ideal.

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• WSS 3.0 fails to hide quick launch items for which the current user does not have access

  - by Nils

  I'm running a Small Business Server 2008 with Windows Sharepoint Services 3.0 (WSS 3.0). I thought WSS was supposed to hide menu items for which the current logged in user don't have access? Apparently, all users can see all links, regardless of whether they have access. This applies to both links to newly created sub-sites as well as document libraries/lists. Is this expected behaviour, or is there a misconfiguration somewhere that causes the links to stay visible even for users without access? Thanks!

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• Multiple connections to a MySQL database in a single PHP script.

  - by st3

  There are multiple times in one page where I need to connect and subsequently query a MySQL database, yet my code won't let me. I think it might be something to do with how my files are nested but it makes no sense. I am opening the SQL connection in the header file. The top of the offending page looks like the following: <?php $page_title = 'Dashboard'; include('templates/header.inc'); // includes a 'require_once('mysqli_connect.php') and a small query to the database; require_once('includes/functions.php'); require_once('includes/dashboard_sql.php'); // Contains functions which connect to database (which are failing.) ?> I get the PHP error Notice: Undefined variable: dbc in /Library/WebServer/Documents/pediatory_site/includes/dashboard_sql.php Where $dbc is the database connection defined in mysqli_connect.php. If anyone could help me out that would be great.

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• Selecting a value from multiple dictionaries inside an enumeration

  - by johaanfaust

  If I have an enumeration of dictionaries IEnumerable<IDictionary<string, float>> enumeration can I perform a Linq query on it so that I can select by a value from each dictionary in the enumeration using the same key? I can do this in a loop: float f; foreach (var dictionary in enumeration) { if (dictionary.TryGetValue("some key", out f)) { Console.WriteLine(f); } } (The eventual plan is to compare the performance of the query verses the equivalent nested looping statements (the enumeration itself is formed from either another query or an equivalent set of loops).)

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• Query Execution Plan - When is the Where clause executed?

  - by Alex

  I have a query like this (created by LINQ): SELECT [t0].[Id], [t0].[CreationDate], [t0].[CreatorId] FROM [dbo].[DataFTS]('test', 100) AS [t0] WHERE [t0].[CreatorId] = 1 ORDER BY [t0].[RANK] DataFTS is a full-text search table valued function. The query execution plan looks like this: SELECT (0%) - Sort (23%) - Nested Loops (Inner Join) (1%) - Sort (Top N Sort) (25%) - Stream Aggregate (0%) - Stream Aggregate (0%) - Compute Scalar (0%) - Table Valued Function (FullTextMatch) (13%) | | - Clustered Index Seek (38%) Does this mean that the WHERE clause ([CreatorId] = 1) is executed prior to the TVF ( full text search) or after the full text search? Thank you.

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• Rails Rspec testing not saving a transactional model

  - by NolanDC

  I'm currently testing my Rails controllers using RSpec. In one controller, I have a model that uses transactions, so that it will not be saved unless another nested model (whose data is filled in using fields_for) is also saved correctly. The tests hit a snag when they reach the transaction. Some debugging output proves that the model is valid and ready to save. However, upon entering the transaction block, the model does not save. Even stranger, the code never reaches the else clause of "if model.save" (It does, however, enter the transaction block). I can only assume this is a problem with my testing a transactional model. Any ideas/hints/solutions?

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• Select one column from a row in hibernate

  - by ComfortablyNumb

  I am trying to do a simple query to get a unique result back in hibernate here is my code. public String getName(Integer id) { Session session = getSessionFactory().openSession(); String name = (String)session.createSQLQuery("SELECT name FROM users WHERE user_id = :userId").setParameter("userId", id).uniqueResult(); return name; } The name that is being returned is stored as HTML text that includes html syntacx language. I think this is what is causing the problem but it doesnt make sense I just want to return it as a string. It is only happening on this one field name, I can get every other field in the row but this one it gives me the error. I am getting an exception. The exception I am getting is No Dialect mapping for JDBC type: -1; nested exception is org.hibernate.HibernateException How do you query for a specific column on a row in hibernate?

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• MySQL Returns wrong values on SELECT statement

  - by Andrew K

  All, I'm wondering if this is a MySQL bug, but since I've seen others playing with larger numbers than this, I'm thinking I'm doing something wrong here. Here is my table structure for the table I'm querying: mysql describe ipspace6\G ************* 1. row ************* Field: id Type: decimal(39,0) unsigned Null: NO Key: Default: NULL Extra: ************* 2. row ************* Field: addr Type: decimal(39,0) unsigned Null: NO Key: PRI Default: 0 Extra: ************* 3. row ************* Field: netmask Type: decimal(39,0) unsigned Null: NO Key: Default: 0 Extra: ************* 4. row ************* Field: subnet Type: int(4) Null: NO Key: Default: NULL Extra: Now, I run a simple SELECT statement against the "id" column: mysql SELECT id FROM ipspace6 WHERE id='50552019118453823914642686339427860480'; +----------------------------------------+ | id | +----------------------------------------+ | 50552019118453823730175245602332344320 | | 50552019118453823730175245602332344320 | | 50552019118453823914642686339427860480 | | 50552019118453823914642686339427860480 | +----------------------------------------+ ...What the heck is going on here? Two of these results are valid, and two definitely are not. It's not like I'm doing some super-complex nested query or anything, this is simple stuff, and it's driving me insane. Help, anyone?

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• JNAerator Unnamed Union Missing in Structure

  - by Nick

  I'm trying to get JNAerator to generate some JNA backed Java code from a C shared library and everything is fine except that it failed to generate an unnamed union nested inside a structure. Example: typedef struct MY_STRUCTURE { union { My_Type1 var1; My_Type2 var2; }; }MY_STRUCTURE; If I change the header to make the union have a name it will work. But for obvious reasons I can't just change the header without breaking the shared library I'm trying to use. Any solutions other than changing the header file and shared library to named union?

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• Why are the prices for broadband bandwidth at data centers much higher than consumer/small business offerings?

  - by odemarken

  The prices for broadband bandwidth at data centers are sometimes as much as 10x higher than for a typical small business/consumer connection, at least where I live. Now, I understand those are two differend kind of products, but what exactly are the differences? Is it mainly because the bandwidth you get at a data center is guaranteed (CIR), while a consumer offer lists maximal bandwidth (EIR/MIR)? Or are there other factors as well? (Note: my previous, much more specific question on the same general topic was closed as not constructive. I tried to extract the core issue and present it in a way that can be answered objectively. If you feel that this question is still bad and should be closed, please care to comment and explain why.)

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• jQuery inline text scrolling/rotating/carousel effect

  - by Adam Pope

  I trying to create an animation with JQuery that scrolls 1 word in a sentence. For example, I am a nice sententce of text with a MAGIC word in it OTHER HIDDEN WORDS After a second or so, MAGIC would move upwards and OTHER would scroll into view. I've tried playing with a few carousel plugins but I can't seem to get the effect working. Some seem to have so many nested divs that they refuse to display inline, others have issues when one word is longer than another. Does anybody know of a plugin that could make this possible? Is this even possible?

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• form_for [@parent,@son],:remote=>true not asking for JS

  - by Cibernox

  Hi. I have a plain old form. That form is used to create new objects of a nested model. #restaurant.rb has_many :courses #courses.rb belongs_to :restaurant #routes.rb resources :restaurants do resources :courses end In my views(in haml), i have that code: %li.course{'data-random'=>random} = form_for([restaurant,course], :remote=>true) do |f| .name= f.text_field :name, :placeholder=>'Name here' .cat= f.hidden_field :category .price= f.text_field :price,:placeholder=>'Price here' .save = hidden_field_tag :random,random = f.submit "Save" I espected that form to be answered by action create of courses_controller with JS (create.js.erb), but it is submited like a normal form, and is answered with html. What am I doing wrong? This problem is similar to this but the only answer don't make sense to me. Thanks Inside

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• before_filter not inheriting from parent controller correctly?

  - by Scott

  Sorry if this may be a stupid question but I'm unable get my filters to inherit the way the Rails 3 documentation is saying it should. Specifically I have an Admin controller that was generated via: rails generate controller admin I added only a single action to the admin controller, the before filter & the private filter method class AdminController < ApplicationController before_filter require_admin_creds def index end private def require_admin_creds unless current_user && current_user.admin? flash[:error] = ... redirect_to .... end end end I next then created my nested resources under the admin section with: rails generate scaffold admin/model While my admin index is indeed getting the filter, the admin/model index (or any other actions) are not. What is happening under the hood here that I must have excluded? Thanks in advance.

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• E: The package adobe-flashplugin needs to be reinstalled, but I can't find an archive for it. Ubuntu 9.10

  - by Paikkos

  I had some problems with amarok player, I couldn't get any sound from it. Anyway, I fixed it somehow, from terminal, with some packages, after a couple of reboots, now I have problem with the adobe-flashplugin. I'm trying this in terminal but: sudo apt-get install adobe-flashplugin Reading package lists... Done Building dependency tree Reading state information... Done E: The package adobe-flashplugin needs to be reinstalled, but I can't find an archive for it. I also tried the update manager, but I get something about partial upgrade but that thing also isnt working, and I get a message that I have to install it manually or I remove it completely. So, how can I remove it completely and then I will install it clean again from the beggining?

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• findBy(x) Using Zend_Navigation with custom route

  - by Stephen

  I am creating my navigation from a db generated array and defining which route to use for some of the uris. when I set the route i am no longer able to use findByUri() as the uri seems to be moved under the properties key example array being used: [id] => 7 [label] => Legal [controller] => index [uri] => /legal [route] => cmsPage [visible] => 1 [params] => Array ( [first] => legal ) snippet of the output: [_properties:protected] => Array ( [uri] => /legal [created] => 2012-10-20 10:23:23 ) When I don't define the route I am able to use findByUri() successfully. currently I am looping through each to find the property that matches the request but it seems a long / wrong approach Is there a way to search by the nested param - or am i doing something wrong with the setup (everything else behaves as expected)

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• Mac OS X: How to change the color label of files from the Terminal

  - by Svish

  Is there a way I can set the color label of a file to some color when in the Terminal? I know that the following command lists some info about what the color currently is, but I can't figure out how to do something about it. Like change it. mdls -name kMDItemFSLabel somefile.ext The reason I would like to know is that I want to recursively mark all files in a folder of a certain type with a certain color label (in my case gray). I know how to do the finding: find . -name "*.ext" And I know how I can run the command afterwards for each file using -exec, but I need to know how to do the actual labeling... I would like a solution that only involves commands built-in to Mac OS X. So preferably no 3rd party stuff, unless there is no other way.

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