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• Why do Programmers Love/Hate Objective-C?

  - by Genericrich

  So I have noticed that there is a lot of animosity towards Objective-C among programmers. What's your take? Is it a vendor lock-in thing against Apple? General antipathy towards Apple? The syntax? What's your view on this? With the advent of the iPhone SDK, Obj-C has gotten a lot more attention lately, and I am curious what people on SO's opinions are. I personally fought the syntax at first but have gotten more and more used to it now. I really like the named arguments. I have some pet peeves with how things are done in Obj-C vs other languages, but I will refrain from comment on them here.

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• Ironpython call numpy problem

  - by Begtostudy

  Ironpython 2.6, python 2.6.5, numpy, SciPy import sys sys.path.append(r'D:\Python26\dll') sys.path.append(r'D:\Python26\Lib') sys.path.append(r'D:\Python26\Lib\site-packages') » import numpy Traceback (most recent call last): File "<string>", line 1, in <module> File "D:\Python26\Lib\site-packages\numpy\__init__.py", line 132, in <module> File "D:\Python26\Lib\site-packages\numpy\add_newdocs.py", line 9, in <module> File "D:\Python26\Lib\site-packages\numpy\lib\__init__.py", line 4, in <module> File "D:\Python26\Lib\site-packages\numpy\lib\type_check.py", line 8, in <module> File "D:\Python26\Lib\site-packages\numpy\core\__init__.py", line 5, in <module> ImportError: No module named multiarray What's wrong? Thanks.

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• Problem with constants in application.ini after PHP upgrade

  - by Marek

  Hi, I've upgraded PHP on my local dev system to version 5.3.0, and there is some problem when I use constants in application.ini - following manual http://framework.zend.com/manual/en/learning.quickstart.create-project.html I have: bootstrap.path = APPLICATION_PATH "/Bootstrap.php" which leads to: Warning: require_once(APPLICATION_PATH/Bootstrap.php) [function.require-once]: failed to open stream: No such file or directory in Zend\Application.php on line 320 any ideas? SOLVED: Actually name of my constant was _DIR_APPLICATION (code above was copied from ZF manual) - problem lies in this underscore at the begining - it seems that parse_ini_file() in PHP 5.3.0 doesn't replace constants named like this. Short test - you need two files: test.ini bootstrap.path = _DIR_APPLICATION "/Bootstrap.php" bootstrap.class = "Bootstrap" and test.php <?php define('_DIR_APPLICATION', 'test'); $data = parse_ini_file('test.ini'); print_r($data); try to run, then change constant name to 'DIR_APPLICATION' (in both files) and compare result ;)

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• Rails message: ActionView::MissingTemplate

  - by rtfminc

  I am getting an error that I cannot figure out: ActionView::MissingTemplate (Missing template cluster/delete_stuff.erb in view path app/views) <...snip trace...> Rendering rescues/layout (internal_server_error) I am "enhancing" others code and am following the convention they set up, where they have have code like: <%= render :partial => "other_stuff" %> And a file named _other_stuff.html.erb and it all works, but when I copy these little snippets, I get the above error. Any ideas? Something is going on here that I need to figure out.

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• UNIX Timestamp to MySQL DATETIME

  - by Henk Denneboom

  Hi all, I have a table with statistics and a field named time with Unix Timestamps. There are about 200 rows in the table, but I would like to change the Unix timestamps to MySQL DATETIME. Without losing the current rows. What would be the best way to update the Unix Timestamp to MySQL's DATETIME? The current table: CREATE TABLE `stats` ( `id` int(11) unsigned NOT NULL auto_increment, `time` int(11) NOT NULL, `domain` varchar(40) NOT NULL, `ip` varchar(20) NOT NULL, `user_agent` varchar(255) NOT NULL, `domain_id` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 So the time (INT) should be a DATETIME field. Thanks in advance!

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• how to set filter for directories qt qfiledialog

  - by sneha

  hello everyone,i would like to know is there any way to select only some directories and some files at a time using qfiledialog class.here i set filesfilter..but i also need to set folder filter i mean i want only certain/some folders to be selected of name (i mean i need a filter for folders too.. coz i hav a common format for my application folders like example : name.abc,flight.abc etc all these are my folder names..i want to enable selection only for these type of folders which are named at last as .abc) i am using QStringList files = QFileDialog::getOpenFileNames(this, tr("Files & Directories"), QDir::currentPath(),tr(".doc.txt") ); tr(".doc.txt") is my files filter,same way i need folders filter with name only .abc at the end

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• Converting Oracle date arithmetic to work in HSQLDB

  - by JBristow

  I'm trying to spot-test an Oracle backed database with hsqldb and dbunit, but I've run into a snag. The problem is with the following EJB-QL (simplified a bit): SELECT o FROM Offer o WHERE :nowTime BETWEEN o.startDate AND o.startDate + 7 This seems to only work in Oracle's version of SQL. What's the easiest way for me to convert this to work in both hsqldb and oracle? Assume that changing the two between arguments to named parameters is a very difficult refactor, so I'm going to favor answers that provides a more standardized analog to o.startdate + 7 EDIT: After doing some more research, it looks like Oracle converts the above snippet to o.startdate + INTERVAL '7' DAY which is apparently more standard, but doesn't work in HSQLDB.

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• Are there any worse sorting algorithms than Bogosort (a.k.a Monkey Sort)?

  - by womp

  My co-workers took me back in time to my University days with a discussion of sorting algorithms this morning. We reminisced about our favorites like StupidSort, and one of us was sure we had seen a sort algorithm that was O(n!). That got me started looking around for the "worst" sorting algorithms I could find. We postulated that a completely random sort would be pretty bad (i.e. randomize the elements - is it in order? no? randomize again), and I looked around and found out that it's apparently called BogoSort, or Monkey Sort, or sometimes just Random Sort. Monkey Sort appears to have a worst case performance of O(∞), a best case performance of O(n), and an average performance of O(n * n!). Are there any named algorithms that have worse average performance than O(n * n!)? Or are just sillier than Monkey Sort in general?

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• Rename parameter in a WCF client interface

  - by user295479

  Hello everyone, I was wondering if there is a way to rename a parameter in a WCF client interface method ,just the same way I can rename methods or enumerations: Renaming methods: [System.Runtime.Serialization.DataMemberAttribute(Name = "intError")] public int ErrorCode {...} Renaming enumerations: public enum MyEnumeration: int { [System.Runtime.Serialization.EnumMemberAttribute()] None = 0, [System.Runtime.Serialization.EnumMemberAttribute(Value = "FirstOption")] First= 1, [System.Runtime.Serialization.EnumMemberAttribute()] SecondOption= 2, } Renaming parameters?? I want to rename an interface parameter named "error" which FxCop doesn't like. Any help will be appreciated. Thank you.

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• Set environment variable for build in hudson

  - by pbreault

  I am trying to put a maven2 project under continuous integration in hudson. The project uses selenium for some integration testing. Hudson is running on a headless linux. I am using xvfb to start a x server session for selenium. In order to run the tests, I need to export an environment variable named DISPLAY. e.g. export DISPLAY=:99 However, I don't want to set the variable on the box since it would affect all builds. I have tried to do a shell execute using the m2 extra steps plugin but it doesnt work since it is executed in a separate bash file, meaning that environment variables are not persisted. Is there a way to register the environment variable from hudson.

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• What are the differences among sqlite3 from python2.5, pysqlite and apsw

  - by leo

  Hi, I would like to know the differences among sqlite3 from python2.5, pysqlite and apsw? I have a bumpy run when trying to install pysqlite on windows vista with python2.5, see following: download sqlite from http://sqlite.org/download.html and unzip them into windows/system32 folder and put sqlite3.dll into c:/python25/Lib folder download pysqlite windows installer when trying to run following in python shell: >>> from pysqlite2 import test Traceback (most recent call last): File "<stdin>", line 1, in <module> File "pysqlite2\test\__init__.py", line 35, in <module> from pysqlite2.test import dbapi, types, userfunctions, factory, transactions,\ File "pysqlite2\test\dbapi.py", line 27, in <module> import pysqlite2.dbapi2 as sqlite File "pysqlite2\dbapi2.py", line 27, in <module> from pysqlite2._sqlite import * ImportError: No module named _sqlite I am wondering anybody with experiences of the above three types of sqlite binding to python can comment their pros and cons such as performances I am wondering is it worthwhile to try the pysqlite or apsw thanks

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• recursive html2haml

  - by yaya3

  I have many html files in nested directories which I need to convert to Haml templates I've modified the following bash script from here - http://terrbear.org/?p=277 to modify html files and not erb but I still need to modify it to be recursive ... #!/bin/bash if [ -z "$1" ]; then wdir="." else wdir=$1 fi for f in $( ls $wdir/*.html ); do out="${f%}.haml" if [ -e $out ]; then echo "skipping $out; already exists" else echo "hamlifying $f" html2haml $f > $out fi done I've named this script h2h.sh and tried going for commands like h2h.sh `find . -type d` I'm getting no output in the terminal Thanks

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• Error in retrieving data from Excel File

  - by Sreejesh Kumar

  I have an excel file. I wanted to pull the data from excel file to SQL Server table. And the data is successfully transferred.In the excel file, I removed a text from one column named "Risk" from one row.The text was lengthy one.now the package execution fails at the source ie from the excel file. The errors are shown as "[Audit [1]] Error: There was an error with output column "Risk" (100) on output "Excel Source Output" (9). The column status returned was: "DBSTATUS_UNAVAILABLE"." and "[Audit [1]] Error: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "output column "Risk" (100)" failed because error code 0xC0209071 occurred, and the error row disposition on "output column "Risk" (100)" specifies failure on error. An error occurred on the specified object of the specified component. There may be error messages posted before this with more information about the failure." the error occurs only when I remove this particular text from this row.

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• jquery $.ajax to php problem

  - by Pouya

  hi.i have two problems with jquery $.ajax. first problem is ihave a php file named action.php and here the code: if($_GET['action']=='add'){ //rest of the code here } And i use jquery $.Ajax function to call that when form fills: $.ajax({type:"POST", url:"action.php?action=add", data:$("#form").serialize(), cache:false, timeout:10000}); this works but i wanted to know is there anyway to send the action=add code with data and not the url? and the second problem that i have is that i have a link: <a href="#" onclick="delete(4);">delete row from mysql where id is 4</a> and a jquery function: function deleteUser(id){ $.ajax({type:"POST", url:"action.php?action=delete", data:"id="+id, cache:false, timeout:10000});} and of course the action.php code: if($_GET['action']=='deletestudent'){ mysql_query("DELETE FROM `students` WHERE `student_id` = {$_POST['id']}"); } but it doesn't work.what should i do?

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• add methods in subclasses within the super class constructor

  - by deamon

  I want to add methods (more specifically: method aliases) automatically to Python subclasses. If the subclass defines a method named 'get' I want to add a method alias 'GET' to the dictionary of the subclass. To not repeat myself I'd like to define this modifation routine in the base class. But if I check in the base class init method, there is no such method, since it is defined in the subclass. It will become more clear with some source code: class Base: def __init__(self): if hasattr(self, "get"): setattr(self, "GET", self.get) class Sub(Base): def get(): pass print(dir(Sub)) Output: ['__doc__', '__init__', '__module__', 'get'] It should also contain 'GET'. Is there a way to do it within the base class?

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• ASP.NET MVC 2 Areas 404

  - by Justin

  Hey, Has anyone been able to get the Areas in ASP.NET MVC 2 to work? I created a new Area called "Secure" and placed a new controller in it named HomeController. I then Created a new Home/Index.aspx view. However, when I browse to http://localhost/myapp/Secure/ it gives a 404 resource cannot be found. http://localhost/myapp/Secure/Home gives the same error. My area registration looks like this: public override void RegisterArea(AreaRegistrationContext context) { context.MapRoute( "Secure_default", "Secure/{controller}/{action}/{id}", new { action = "Index", id = UrlParameter.Optional } ); } I also tried this: public override void RegisterArea(AreaRegistrationContext context) { context.MapRoute( "Secure_default", "Secure/{controller}/{action}/{id}", new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); } Thanks, Justin

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• Testing Rails Metal/Rack with RSpec?

  - by Matt Darby

  Say I have a Metal class named Preview. How do I test it with RSpec? When I try: require 'spec_helper' describe Preview do it "should return the posted content" do post "/preview", :content => "*title*" response.body.should == "*title*" end end I get: undefined method `post' for #<ActiveSupport::TestCase::Subclass_1:0x1058b3098> It seems that RSpec doesn't load up the :post method if the test isn't explicitly for a Controller. I've tried specifying :type => :controller to no avail.

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• Pulling and pushing between two google code repositories

  - by Kim L

  I'll start by quoting google's blog Project owners can now create multiple repositories for their project, and they can choose to make any of those new repositories a clone of any of the project's other repositories. These project clones share the same commit access permissions as the original project and make it easier for project members to work together on new features. A common pattern in the Mercurial world is to place each "official" branch into a separate repository with naming conventions like "project-crew", "project-stable", and so on. I've done exactly this. I have my default repository and then I've cloned that repository to a repo named "dev". I intend to use the default repository as my stable repo and then the dev repo as my primary development repo. Now I'm just wondering how on earth I should go about to pull and push between the default and the dev repositories?

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• htaccess redirect from root to subfolder and then mask the url?

  - by KiwiCoder

  Hello all, Two things: Firstly - I have version 2 of a website located in a folder named v2, and I want to redirect any traffic that is NOT a child of the v2 folder, to www.example.com/v2 The old site located in the root was created in iWeb and has a LOT of subfolders and sub-subfolders. So: www.example.com/v2 = New site www.example.com/Page.html www.example.com/category/Page.html ww.example.com/category/subcategory/Page.html = All generic examples of what I need to redirect. Secondly, and I don't know if this is possible, I want to hide /v2/ in the URL, so that visitors will just see www.example.com/page even though they are actually on www.example.com/v2/page Links are hardcoded to the v2 folder, like so <a href="v2/contact.html" Any help is MOST appreciated. I've spent hours trying to figure this out, but I'm only just learning about htaccess and regular expressions, and am totally confused. Thanks so much!

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• Handling messages for window from other process

  - by MK

  I'm developing a C# WPF application that reparents the main window of another application using a call to Win32 SetParent(). The handle to this out-of-process child window is wrapped by a class named FormHost which is derived from HwndHost. All is working well except for one thing: messages for the reparented window are not delivered to FormHost. MSDN documentation clearly states that the HwndHost window procedure WndProc() cannot be used with out-of-process windows. The alternative, MessageHook doesn't work either. I also tried calling AttachThreadInput() to combine the input processing of the two windows. No luck. Any suggestions?

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• PHP Include Windows XP Notepad++ Editor - Nav Include Not Working - Nav Disappears

  - by Lorianna Sprague

  I am creating a website, and have a tabbed horizontal menu. In order to cut back on the number of files I have to edit when I have to make changes to the menu I want to put the navigation in a separate file that I can call using a PHP include statement. When I do this, however, the nav disappears entirely from the page. The rest of the content remains, and there are no error messages. I have been looking for answers for this for weeks, and have tried every version of the PHP include statement that I could find. None of them worked. This was the last attempt. I have the file "nav.php" in a folder named "includes" in a main dir called "testsite" I use Windows XP, use NotePad++ as my text editor, and have been testing in Firefox. I can't find an answer anywhere - any help would be appreciated. Lorianna

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• R cannot be resolved - android error

  - by MaurizioPz

  Hi, I just downloaded and installed the new android sdk. I wanted to create a simple application to test drive it. the widzard creates this code: package eu.mauriziopz.gps; import android.app.Activity; import android.os.Bundle; public class ggps extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } } but ecplise give me this error R cannot be resolved on this line setContentView(R.layout.main); can any one explain me why? ps. I do have an xml file named main.xml under res/layout/

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• dynamic log4net appender name?

  - by sanjeev40084

  Let's say i have 3 smtp appenders in same log4net file whose names are: <appender name = "emailDevelopment".. /> <appender name = "emailBeta".. /> <appender name = "emailProduction".. /> Let's say i have 3 different servers(Dev, Beta, Production). Depending upon the server, i want to fire the log. In case of Development server, it would fire log from "emailDevelopment". I have a system variable in each server named "ApplicationEnvironment" whose value is Development, Beta, Production based on the server names. Now is there anyway i can setup root in log4net so that it fires email depending upon the server name. <root> <priority value="ALL" /> <appender-ref ref="email<environment name from whose appender should be used>" /> </root>

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• WCSF vs MEF, What's Best For Me?

  - by Galilyou

  Hey fellows, I'm working on a large web application that includes many modules (CRM, Inventory, Administration, etc.) What I want to accomplish is to be able develop each of these modules independently (the UI, Core Logic, DataAccess Logic, and all) and then integrate them all together into a core module (this integration should only be a change in the configuration file). For example, if I have a core module named Host, I should be able to add the CRM module to the host module by simply adding this line to the host's configuration file: <module name="CRM" /> I did some reading on the WCSF, and found that it can help integrate some modules together, but it really doesn't offer so much help in terms of integrating those UI elements. Some friends suggested MEF for the job, but I haven't looked at that yet. What do you guys think? Is it possible to achieve this level of modularity, and how much work do I have to put into it to get it working?

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• Zipping Rx IObservable with infinite number set

  - by Toni Kielo

  I have a IObservable [named rows in the sample below] from Reactive extensions framework and I want to add index numbers to each object it observes. I've tried to implement this using Zip function: rows.Zip(Enumerable.Range(1, int.MaxValue), (row, index) => new { Row = row, Index = index }) .Subscribe(a => ProcessRow(a.Row, a.Index), () => Completed()); .. but unfortunately this throws ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: disposables Am I understanding the Zip function wrong or is there a problem with my code? The Range part of the code doesn't seem to be the problem and the IObservable isn't yet receiving any events.

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