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• Why does C# (4.0) not allow co- and contravariance in generic class types?

  - by Lars Corneliussen

  What is the reason for that limitation. Sure, one couldn't use fields, because they are allways read-write. But that can't be the answer, can it?

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• References for better performance of newer JSF specifications

  - by Pentius

  Dear fellows, I'm looking for a reference to cite, which states that JSF 1.2 performs better than JSF 1.1. Or JSF 2.0 over JSF 1.2 respectively. I'm quite sure that I've read something like this before but can't find it anymore. Maybe you can help. Or is this mischief and there are no official statements regarding the performance?

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• Custom Report Items in local reports

  - by IordanTanev

  Hi, i have read this article about custom report items(CRI) http://msdn.microsoft.com/en-us/magazine/cc188686.aspx The only problem is that CRI are only usable in reporting service and not in local reports. My question is it possible some how to use CRI in local reports( RDLC ). Also i am interested in which version of reporting service is this possible, if possible Best Regards, Iordan

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• VB6 Serial port programming

  - by commodus86

  I'm not much experienced in VB6 serial port programming. I need to control another circuit through serial port. (I have heard that pin 4 and pin 7 are used for that purpose. If these pins are incorrect please tell me what pins are used for such purposes) My requirement is to set those pins to high or low and read their levels(high or low) through VB6 program. How to do the task?? Thanx,

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• getting started with libmms

  - by Vnuce

  Actually, the title explains it all... I want to read a stream, but have no idea from where to start. I've searched the web for some documentation/tutorial/whatever with no luck. Any help using this lib would be very appreciated.

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• C#: how to explicitly set culture for Double.Parse(string num)

  - by Nike

  I download one program that read file and then parse double values from String to Double. But I get an exception because this file contains numbers with '.' separator, but there is ',' in my culture. How can I set culture explicitly?

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• xml conversion to Object c#

  - by Moony

  If i have an xml of the form Value1 Value2 ... And i define a class in my c# code for Detail and provide setters/getters for Name1, Name2 etc is there an api to directly read the xml and create Detail objects.

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• API's to access 'Novell GroupWise' data for c#.What will be difference if i use "gwtapp.dll" or "Gro

  - by Preeti

  Hi, I want to read mail,calendar,contact items from Novell GroupWise Client.(using version 8). How to start with? Which API is best for this? What will be difference if i use "gwtapp.dll" or "GroupWise Web Services" ? thanx

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• Can I create a standalone (not ran in browser, having full trust) application with Moonlight?

  - by Ivan

  I look forward to develop a WPF MVVC application which is to be ran both on Windows with .Net Framework and Mac/Linux with Mono. As far as I understand the only part of of WPF implemented in Mono is Silverlight as Moonlight. As far as I've read it is possible to develop a standalone application with Silverlight 3, but is it possible with Moonlight 2?

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• Problems installing and using filetype plugins in Vim

  - by janoChen

  I downloaded xml.vim (xmledit : A filetype plugin to help edit XML, HTML, and SGML documents ). I placed it in my ftplugins folder. I read the documentation and it says: enter :filetype plugin on but this doesn't work, I'm still unable to make the filetype plugin work. Any suggestions?

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• Java package scanner - find all classes with a given interface

  - by michael lucas

  In C# you can easily read all classes from a given assembly. I'm looking for equivalent feature in Java. I need this to automatically bind EJB beans to my Guice Module.

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• Creating a console in Java

  - by DeadMG

  When I try to use java.lang.System.console(), I get a null pointer. I can still write to out and read from in, but this only works when I run straight from my IDE. When I run the .jar file directly, nothing happens. How can I create a console like I'd see using std::cout for use in Java?

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• How to create a custom Annotation and processing it using APT ?

  - by Dhana

  Hi, I'm new to Java Annotation. I know how to create custom annotation but I don't know how to process that Annotation to generate the dynamic code just like ejb 3.0 and hibernate does. I read some articles based on APT but no one gives the details about how to process the Annotation. Are there any tutorials with sample code for processing custom Annotations? Thanks

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• How to disable html button using JavaScript?

  - by Jack Roscoe

  Hi, I've read that you can disable (make physically unclickable) a html button simply but appending 'disable' to its tag, but not as an attribute, as follows: <input type="button" name=myButton value="disable" disabled> Since this setting is not an attribute, how can I add this in dynamically via JavaScript to disable a button that was previously enabled?

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• What are advantages of Domain specific Languages?

  - by joseph

  Hello. I have read some info about DSL. But what is it good for? What are situations, where using of DSL is better than another approaches? And how widespread is using of DSL?

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• in django admin, can we have a multiple select based on choices

  - by Rasiel

  http://docs.djangoproject.com/en/dev/ref/models/fields/#choices i've read through the documentation and this implies using a database table for dynamic data, however it states choices is meant for static data that doesn't change much, if ever. so what if i want to use choices, but have it select multiple because the data i'm using is quite static, e.g days of the week. is there anyway to achieve this without a database table?

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• How can you tell if a person is a programmer?

  - by Lucas Jones

  I was wondering when I read the famous "Programmer Habits" thread, I was wondering: Is there any way to tell if somebody is a programmer without actually asking them? Clarification: I am asking for things that you can use to recognise a programmer from "afar" or without knowing them well. To identify habits, you need to be around a person for a certain amount of time.

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• developing browser extension for content filtering

  - by user272483

  i'm developing an application for content filtering. i'll use it as web service but my problem is that i hadn't developed any extension for firefox or ie before. i read some about firefox extensions and now i know a little about it. firstly can i use web service in a firefox/ie extension? if yes, can you give me a link of tutorial or sth like that? all suggestions are welcome. thx..

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• can use more than 1 column in MySQL Group BY?

  - by Am1rr3zA

  Hi, I want write these SQL Query: CREATE VIEW `uniaverage` AS select `averagegrade`.`mjr`,`averagegrade`.`lev` , avg(`averagegrade`.`average`) AS `uniAVG` from `averagegrade` group by `averagegrade`.`lev`, `averagegrade`.`mjr`; But MySQL Query Browser give this error: Operand Should Contain 1 column(s) I somewhere read can use group by on more than 1 column!!! How can I solve this error? or how can I change the Query to get the same result?

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• Automatically open files given as command line arguments in Python

  - by mk

  I have a lot of Perl scripts that looks something like the following. What it does is that it will automatically open any file given as a command line argument and in this case print the content of that file. If no file is given it will instead read from standard input. while ( <> ) { print $_; } Is there a way to do something similar in Python without having to explicitly open each file?

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• python UTF16LE file to UTF8 encoding

  - by Qiao

  I have big file with utf16le (BOM) encoding. Is it possible to convert it to usual UTF8 by python? Something like file_old = open('old.txt', mode='r', encoding='utf_16_le') file_new = open('new.txt', mode='w', encoding='utf-8') text = file_old.read() file_new.write(text.encode('utf-8')) http://docs.python.org/release/2.3/lib/node126.html (-- utf_16_le UTF-16LE) Not working. Can't understand "TypeError: must be str, not bytes" error. python 3

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• c# reading code inside a method

  - by koraytaylan

  i'm playing around with c# reflection api. i can easily load type info of classes, methods etc. in an assembly. now i wonder how can i load and read the code inside a method?

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• Enabling ProGuard in Eclipse for Android

  - by Ted Hopp

  The new documentation on ProGuard for Android says to add a line to the default.properties file in the project home directory. However, on opening this file, I read at the top: # This file is automatically generated by Android Tools. # Do not modify this file -- YOUR CHANGES WILL BE ERASED! Am I missing something? Also, is there a way to enable ProGuard only for a production build from Eclipse (i.e., when exporting the finished product)?

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• Is it possible to do live streaming with FFmpeg in AS3.

  - by Noelchan

  I know its possible for FFmpeg to render from the webcam to SWF and FLV. But the problem is the SWF file can only be read via AS2 and FLV seems to only be loading a static frame from my Flash Player. Is there a way for FFmpeg to render a AVM3 SWF or a stream-able FLV?

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• jQuery slider ui -- dynamically set starting value from HTML element

  - by publicRavi

  I am trying to read the value of my slider from a DIV element's title (which may be the issue). That is pushed into the following: $(document).ready(function() { $(".myslider5").slider({ value: parseInt($(this).attr("title")), slide: function(event, ui) { // more actions } }); I think I get NaN error. Any clues?

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