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• How do you do dynamic script evaluation in C#?

  - by Deane

  What is the state of dynamic code evaluation in C#? For a very advanced feature of an app I'm working on, I'd like the users to be able to enter a line of C# code that should evaluate to a boolean. Something like: DateTime.Now.Hours > 12 && DateTime.Now.Hours < 14 I want to dynamically eval this string and capture the result as a boolean. I tried Microsoft.JScript.Eval.JScriptEvaluate, and this worked, but it's technically deprecated and it only works with Javascript (not ideal, but workable). Additionally, I'd like to be able to push objects into the script engine so that they can be used in the evaluation. Some resources I find mentioned dynamically compiling assemblies, but this is more overhead than I think I want to deal with. So, what is the state of dynamic script evaluation in C#? Is it possible, or am I out of luck?

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• How do I update an MKAnnotation location with new coordinates?

  - by user345711

  Hi everyone, i'm having problems trying to update an annotation location with different coordinates. Is there any way I can change de location property without having to create another annotation? I've tried the code below with no luck. The annotation i'm trying to get is not updating its location. Please help! CLLocationCoordinate2D location; location.latitude = -36.560976; location.longitude = -59.455807; for (id annotation in self.mapView.annotations) { if ([annotation isKindOfClass:[MyAnnotation class]]) { [annotation setCoords:location]; //setCoords is defined in MyAnnotation class } } Thank you all!

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• mySQL Left Join on multiple tables with conditions

  - by Jarrod

  Hi, I have a problem. I have 4 tables: Invoice_Payment, Invoice, Client, and Calendar Basically, I have the below query, which works well, except, months with no date_due don't return. I.E only months with a date_due will be returned. I think I have to use a left join and join the calendar table with something like: LEFT JOIN Calendar ON Invoice_Payments.date_paid = Calendar.date_field. But I'm having no luck SELECT MONTHNAME(Invoice_Payments.date_paid) as month, SUM(Invoice_Payments.paid_amount) AS total FROM Invoice, Client, Invoice_Payments WHERE Client.registered_id = 1 AND Client.id = Invoice.client_id And Invoice.id = Invoice_Payments.invoice_id AND date_paid IS NOT NULL GROUP BY YEAR(Invoice_Payments.date_paid), MONTH(Invoice_Payments.date_paid) Any help appreciated.

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• Cleanest way to tell if 3 times are within half an hour of each other

  - by niggles

  I have 3 date / time input boxes on a form and the user cannot select any times within half an hour of each other. I've converted all values to epoch format using a Javascript implementation of strtotime, but not sure how to recursively check that any of the times are actually half an hour apart. I can hand code all checks, but it would be cleaner to write a recursive function (especially if there were theoretically more than 3 time slots). Did some Google research but no luck. Any suggestions on implementing this in Javascript or Jquery. Thanks.

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• Footer issue in IE6 & 7

  - by chaser7016

  Hi At the following site http://www.r2integrated.com/clients/FMX/index.html In IE 6 & 7 the footer's background should be grey; outside of the white box. It looks correct in firefox, chrome & IE8, but not IE6 & 7 the footer's background is white and inside the box. I have tried many things with no luck. I wonder if anyone can offer suggestions? thank you chaser

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• How to read in Excel file in Win7 64bit?

  - by Bill Campbell

  Hi, I have a c# application that I have moved to a 64bit machine. This application reads in an Excel file for some data input. I would like to build this project as 64bit. Is there any way to have my program read in this file? I find it hard to believe that there is no way to use and Excel file as input into a 64bit app. I have installed Office 2010 64 bit as well as the 2010 Office System Driver Beta: Data Connectivity Components with no luck. I'm sure that I'm just missing something really simple. thanks!! Bill

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• Getting Wikipedia infoboxes in a format that Ruby can understand

  - by hadees

  I am trying to get the data from Wikipedia's infoboxes into a hash or something so that I can use it in my Ruby on Rails program. Specifically I'm interested in the Infobox company and Infobox person. The example I have been using is "Ford Motor Company". I want to get the company info for that and the person info for the people linked to in Ford's company box. I've tried figuring out how to do this from the Wikipedia API or DBPedia but I haven't had much luck. I know wikipedia can return some things as json which I could parse with ruby but I haven't been able to figure out how to get the infobox. In the case of DBPedia I am kind of lost on how to even query it to get the info for Ford Motor Company.

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• jQuery Validation Plugin - Enable 'Eager' Validation only after and Invalid Submit

  - by Ryan Fitzer

  By default, if a user enters a value in a field, the 'eager' validation kicks in. Is there any way to disable 'eager' validation before submit and then enable it after an invalid submit has happened? I've used $.validator.setDefaults() to initially set the onkeyup and onfocusout properties to false. In the invalidHandler method I rerun the $.validator.setDefaults(), setting onkeyup and onfocusout properties to true. No luck with this approach. Basically, I only want the 'eager' validation to take place after the user tries to submit an invalid form. Thanks for any help.

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• jQuery: jquery form plugin syntax?

  - by k00k

  I'm using jquery with the jquery form plugin. I read through a bunch of posts, the docs, etc., and I'm still having trouble with what I believe to be simple. I have a form with some simple text inputs and a couple textareas, and I have this link that I want to trigger submission of that form to a specific method (/email): <a id="email-data">Send Email</a> and this jquery in doc ready: $('#email-data').click(function() { var options = { url: '/email/', success: alert('Email sent.') }; $('#report-giftcard-sales-form').ajaxSubmit(options); }); So I would expect it to submit to my /email method, but no such luck. Currently I just have the /email method logging a debug message, so it's as simple as can be. Any help is greatly appreciated.

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• Return order of MySQL SHOW COLUMNS

  - by rich

  Hey guys. Simple one this, but one I can't seem to find any information on so here goes. I need to find the columns in a specific table, which is no problem.... SHOW COLUMNS FROM tablename LIKE '%ColumnPrefix%'; But I need to know what order they will be returned, preferable by choosing to order the results ascending alphabetically. I have had no luck with using ORDER BY Field. Any ideas? Cheers!

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• symfony sfValidatorSchemaCompare and dateformat output problem

  - by Gerbrand

  public function configure() { $this->widgetSchema['start_date'] = new sfWidgetFormInput(); $this->widgetSchema['end_date'] = new sfWidgetFormInput(); $this->validatorSchema->setPostValidator( new sfValidatorOr ( array( new sfValidatorAnd( array (new sfValidatorSchemaCompare('start_date', sfValidatorSchemaCompare::NOT_EQUAL, null), new sfValidatorSchemaCompare('end_date', sfValidatorSchemaCompare::EQUAL, null) )), new sfValidatorSchemaCompare('start_date', sfValidatorSchemaCompare::LESS_THAN_EQUAL, 'end_date', array('throw_global_error' => false), array('invalid' => 'The start date ("%left_field%") must be before the end date ("%right_field%")'))))); } I've got following input dates which I want to check if the end date isn't before the start date: Input: Start = 31/03/10 End= 07/03/10 Output: The start date (2010-03-31) must be before the end date (2010-03-07) Can you in some way change the date output? I need the error message to set the date format the same as the input. Also my input fields are set with the wrong date format when the error appears. Tried several things, but no luck at this moment. Didn't find a solution or information on symfony it self. I'm using symfony version 1.2.11

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• WPF Animate a Matrix using interpolation

  - by Mark

  I'm having a issue with my application that is using touch gestures to scale, translate and rotate my scene. I was using a TransformGroup which contained TranslateTransform, ScaleTransform and a RotateTransform but I could not get the movement correct, it always jumps and skips, so I moved to a MaxtrixTransform which I was able to use much easier to get my scene to be zoomable, rotatable and panable nicely. However, what I later found out was that you cannot animate smoothly (using interpolation) the values of a Matrix, for what reason I have no idea, but its part of the MSDN doco and the properties of the Matrix are not dependency properties anyways... Has anyone had any luck animating a matrix to make it smooth? The only idea(s) I have had is to animate a few different, custom DP which all have callbacks that I update the matrix from OR To convert the matrix to a set of Transform objects that I then animate and then afterwords convert back. Is there a smarter way to do this?

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• Bluetooth server application accepting connections from mobile devices

  - by Bruno Reis

  Hello, I'd like to develop a desktop application (on Windows, and preferably on .NET) that accepts bluetooth connections from mobile devices, that would then send commands to this application. I've never worked with bluetooth before. I've looked for open-source examples of such applications, but I had no luck. I've actually found on Microsoft a managed (.NET) wrapper for the bluetooth stack on Windows CE, but wasn't able to use it on my Windows 7. Do you know of any good texts discussing this topic? Any other source of information on the subject? Where should I start? Thanks.

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• List the names of existing directories from .tgz file in a bash variable

  - by Tom

  I would like to find all the directories that are in a .tgz file and that already exist on the system and put the result in a bash variable. I have tried this: EXISTING=`for f in \`tar tzf $ARCHIVE\`; do if [ -d "/tmp/unpacked-data/\$f" ]; then echo \$f; fi; done` with no luck. If I echo the value of $f before the if in the loop, I get all the files, ie this works: EXISTING=`for f in \`tar tzf $ARCHIVE\`; do echo \$f; done` Can someone tell me why the \$f doesn't work in the if statement? Thanks, Tom

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• jQuery AJAX converting variable string to html styled text

  - by sadmicrowave

  I've got an AJAX transmission of a variable string in my primary coding language (Visual FoxPro 9) that looks like this: AjaxResponse = CREATEOBJECT("Custom") lcMessage = "<li class='hello'>Hello</li>" AjaxResponse.AddProperty("Reply", lcMessage) Response.ContentType = "text/html" Response.Write(AjaxResponse.Reply) While using the jQuery function .ajax() I've created a success: function that looks like this: $.ajax({ url: 'index?Proc=GetUuserHistory', dataType: "html", success: function(data){ $("div#history-text").text(data); }; }); My problem is that the text inserting into 'div#history-text' is unformatted and contains the li tags still. I've tried substituting the .text for .prepend, .append, and .html with no luck...is there a way to convert this string back to html format after its been received using Ajax?

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• ORM solutions (JPA; Hibernate) vs. JDBC

  - by Grasper

  I need to be able to insert/update objects at a consistent rate of at least 8000 objects every 5 seconds in an in-memory HSQL database. I have done some comparison performance testing between Spring/Hibernate/JPA and pure JDBC. I have found a significant difference in performance using HSQL.. With Spring/Hib/JPA, I can insert 3000-4000 of my 1.5 KB objects (with a One-Many and a Many-Many relationship) in 5 seconds, while with direct JDBC calls I can insert 10,000-12,000 of those same objects. I cannot figure out why there is such a huge discrepancy. I have tweaked the Spring/Hib/JPA settings a lot trying to get close in performance without luck. I want to use Spring/Hib/JPA for future purposes, expandability, and because the foreign key relationships (one-many and many-many) are difficult to maintain by hand; but the performance requirements seem to point towards using pure JDBC. Any ideas of why there would be such a huge discrepancy?

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• Start thread with two parameters

  - by Matt

  I've got a method that gets called on an event, which presents me with two variables varA, varB (both strings). This method gets called with new information quite frequently, thus I have created a separate method that takes in the two parameters. I want to run this method in a thread, however have struck the issue that Thread.Start will not accept parameters. I've tried a few supposed methods, but have so far had no luck.. I think my best bet is to create a separate class, and handle it there.. However I have a List which I am inserting data into, and hit a dead end when the separate class tried to access that list, since it was in a different class. Can someone help me out here please?

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• Ad/Banner Management/Rotation for Ruby on Rails?

  - by David N. Welton

  Hi, I have a niche site that I'd like to sell banners for directly, rather than going through adsense. I need a system to manage the whole process: displaying ads and an administrative interface to manage them. It doesn't have to be anything terribly fancy, although open source is greatly preferred so that I can grow the system as needs be. Since the site itself is in Rails, I would prefer something for that environment. Googling turns up bunches of them in PHP, but the results are a bit polluted and I didn't have any luck finding one that was done in/for Rails. If I don't find one, I suppose I'll see what I can do to hack together something and release it myself under an open license. Another possibility is this: http://www.google.com/admanager - anyone have anything to say about it? Is it right for someone just selling a few ads for a not-so-big site? Thanks, Dave

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• How to get a service to listen on port 80 on Windows Server 2003

  - by Miky D

  I've coded a custom windows service that listens on TCP port 80 but when I try to install it on a Windows Server 2003 machine it fails to start because some other service is already listening on that port. So far I've disabled the IIS Admin service and the HTTP SSL service but no luck. When I run netstat -a -n -o | findstr 0.0:80 it gives me the process id 4 as the culprit, but when I look at the running processes that process id points to the "System" process. What can I do to get the System process to stop listening on port 80 and get my service to listen instead? P.S. I should point out that the service runs fine if I install it on my Windows XP or Windows 7 development boxes. Also, I should specify that this has nothing to do with it being a service. I've tried starting a regular application that attempts to bing to port 80 on the Windows Server 2003 with the same outcome - it fails because another application is already bound to that port.

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• LogCat acting patchy

  - by OceanBlue

  The LogCat output in eclipse suddenly started weird. It sometimes shows all the output as expected. Other times it just doesn't show anything - is completely blank. After some internet research, I thought Mylyn plugin might be responsible. So I tried de-selecting "Mylyn Tasks UI" & "Mylyn Team UI" on eclipse Window -- Preferences -- General -- Startup and Shutdown -- programs that are started at startup. No Luck. Has anyone else encountered & solved this problem?

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• Perl Encode - UK characters

  - by Phill Pafford

  This is a part 2 question from This Question. So I'm trying out the :encode functionality but having no luck at all. use Encode; use utf8; # Should print: iso-8859-15 print "Latin-9 Encoding: ".find_encoding("latin9")->name."\n"; my $encUK = encode("iso-8859-15", "UK €"); print "Encoded UK: ".$encUK."\n"; Results: Encoded UK: UK € Shouldn't the results be encoded? what am I doing wrong here? EDIT: Added the suggested: use utf8; and now I get this: Encoded UK: UK ? pulling hair out now :/

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• An equivalent of -javaagent in C#? Or: ways to use a java framework in C#.

  - by Alix

  Hi everyone. This is probably something I should be able to figure out by myself, but I'm not having much luck so I figured I'd ask. The issue: I'm translating a system from java to C# and they use a java framework that I'd really like to use, since it takes care of the most complex parts of the system, which I would otherwise have to implement myself. I have the source code of this framework. I know there are several possibilities for using java libraries in C# (although I'm not familiar with any of them, so I'd appreciate suggestions). So far I've thought of using IKVM.NET to generate a .dll, but I'm not sure what to do next, because in java in order to run the framework with your code you're supposed to use the option -javaagent by adding -javaagent:bin/deuceAgent.jar (where deuceAgent is the framework) to your java command line. I don't know what the equivalent in C# would be once I have my .dll, or whether there's an equivalent at all. Any help? Thanks so much.

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• Encode/compress sequence of repeating integers

  - by Alex

  Hey there! I have very long integer sequences that look like this (arbitrary length!): 0000000001110002220033333 Now I need some algorithm to convert this string into something compressed like a9b3a3c3a2d5 Which means "a 9 times, then b 3 times, then a 3 times" and so on, where "a" stands for 0, "b" for 1, "c" for 2 and "d" for 3. How would you do that? So far nothing suitable came to my mind, and I had no luck with google because I didn't really know what to search for. What is this kind of encoding / compression called? PS: I am going to do the encoding with PHP, and the decoding in JavaScript.

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• GCC exports decorated function name only from dll

  - by Jeff McClintock

  Hi Guys, I have a dll, it exports a function... extern "C" int __stdcall MP_GetFactory( gmpi::IMpUnknown** returnInterface ) { } I compile this with Code::Blocks GCC compiler (V3.4.5). Problem: resulting dll exports decorated function name... MP_GetFactory@4 This fails to load, should be plain old... MP_GetFactory I've researched this for about 4 hours. I think --add-stdcall-alias is the option to fix this. My Code::Blocks log shows... mingw32-g++.exe -shared -Wl,--out-implib=bin\Debug\libGainGCC.a -Wl,--dll obj\Debug\se_sdk3\mp_sdk_audio.o obj\Debug\se_sdk3\mp_sdk_common.o obj\Debug\Gain\Gain.o obj\Debug\Gain\gain.res -o bin\Debug\GainGCC.sem --add-stdcall-alias -luser32 ..so I think that's the correct option in there? But no luck. Dependancy Walker show only the decorated name being exported. I got It to kinda work by using __cdecl instead of __stdcall, the name is then exported ok, but the function corrupts the stack when called (because the caller expected the other calling convention).

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• How to make flash video show up under navigation element?

  - by Deshiknaves

  I know that the wmode needs to be either transparent or opaque for the video to show up under other elements on the page. I've added the wmode to the element and param in object, I still have no luck with it. <object width="400" height="225"><param name="wmode" value="transparent" /><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=10875088&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=10875088&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="400" height="225" wmode="transparent"></embed></object><p><a href="http://vimeo.com/10875088">Clutchy Hopkins - Verbal Headlock</a> from <a href="http://vimeo.com/ubiquityrecords">Ubiquity Records</a> on <a href="http://vimeo.com">Vimeo</a>.</p>

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