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  • [Rails] Calling a method from a view using link_to_function

    - by Jeff
    Hello! I'm trying to have an image that when clicked associates the selected guideline to a project. I'm using link_to_function which somewhat behaves but I can not get the method I am calling in the link_to_function to redirect to another page. Is there a better way to do this? Below is a bit of my code. I can paste in additional parts if necessary: <% @guidelines.each do |guideline| %> <tr> <td align='center'><%= link_to_function image_tag("../../../images/icons/action_add.png"), add_guideline(guideline) %></td> <td><%=h guideline.title %></td> My GuidelinesController.helper method looks like this: def add_guideline(guideline) @project = Project.find(params[:project_id]) @project.guidelines << guideline @project.save redirect_to dashboard_path #doesn't work :( end

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  • fast algorithm implementation to sort very small set

    - by aaa
    hello. This is the problem I ran into long time ago. I thought I may ask your for your ideas. assume I have very small set of numbers (integers), 4 or 8 elements, that need to be sorted, fast. what would be the best approach/algorithm? my approach was to use the max/min functions. I guess my question pertains more to implementation, rather than type of algorithm. At this point it becomes somewhat hardware dependent , so let us assume Intel 64-bit processor with SSE3 . Thanks

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  • Is there a logging facade for the .NET world?

    - by Elijah
    I'm somewhat new to the .NET stack and I was wondering if there is an equivalent to slf4j for the .NET platform. For me, logging to a Facade and being able to swap out logging implementations as needed just makes sense. Furthermore, the wrapper APIs available in slf4j have saved me many times when I needed to use a third-party library that was coded against a single logging framework that I wasn't using. Is there a project out there that acts as a facade between loggers like log4net, nLog and Enterprise Library? Are there wrappers that allow me to shortcut calls to those libraries and direct them to another library? Should I start out an open source project to do this myself? Is this question a duplicate because I don't know the right way to ask? Conversely, is the common way to do this using aspect orient programming?

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  • Loop over DOMDocument

    - by Zoredache
    I am following the suggestion from this question Robust, Mature HTML Parser for PHP, about parsing html that may be malformed with DOMDocument. Is there any easy way to loop over the parsed document? So I would like to loop over html like this. $html='<ul> <li>value1</li> <li>value1</li> <li>value3</li> </ul> <p>hello world</p>'; $doc = new DOMDocument(); $doc->loadHTML($html); ??? foreach (??? as $node) { print $node->nodeName.':'.$node->nodeValue; } And get results somewhat like this. ul: li:value1 li:value2 li:value3 p:hello world

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  • Scite Lua - escaping right bracket in regex?

    - by ~sd-imi
    Hi all, Bumped into a somewhat weird problem... I want to turn the string: a\left(b_{d}\right) into a \left( b_{d} \right) in Scite using a Lua script. So, I made the following Lua script for Scite: function SpaceTexEquations() editor:BeginUndoAction() local sel = editor:GetSelText() local cln3 = string.gsub(sel, "\\left(", " \\left( ") local cln4 = string.gsub(cln3, "\\right)", " \\right) ") editor:ReplaceSel(cln4) editor:EndUndoAction() end The cln3 line works fine, however, cln4 crashes with: /home/user/sciteLuaFunctions.lua:49: invalid pattern capture >Lua: error occurred while processing command I think this is because bracket characters () are reserved characters in Lua; but then, how come the cln3 line works without escaping? By the way I also tried: -- using backslash \ as escape char: local cln4 = string.gsub(cln3, "\\right\)", " \\right) ") -- crashes all the same -- using percentage sign % as escape chare local cln4 = string.gsub(cln3, "\\right%)", " \\right) ") -- does not crash, but does not match either Could anyone tell me what would be the correct way to do this? Thanks, Cheers!

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  • Registering NUnit DynamicMock Instances in a UnityContainer

    - by Phil
    I'm somewhat new to Unity and dependency injection. I'm trying to write a unit test that goes something like this: [Test] public void Test() { UnityContainer container = new UnityContainer(); DynamicMock myMock = new DynamicMock(typeof(IMyInterface)); container.RegisterInstance(typeof(IMyInterface), myMock.MockInstance); //Error here // Continue unit test... } When this test executes, the container throws an ArgumentNullException inside the RegisterInstance method with the message Value cannot be null. Parameter name: assignmentValueType. The top line of the stack trace is at Microsoft.Practices.Unity.Utility.Guard.TypeIsAssignable(Type assignmentTargetType, Type assignmentValueType, String argumentName). Why can't I register a MockInstance with the UnityContainer, and how do I work around this?

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  • SmartGWT Widgets not displaying properly

    - by Holograham
    I have a basic GWT Maven project going. I added SmartGWT and started playing around with some widgets and nothing displays correctly. The ListGrid seems to somewhat render but things are off and even data isnt showing up (though the rows respond to indicate there is data within the row). Sorting arrows dont appear but are clickable, and filters are wildy off. Whats causing this. I deleted everything in the .css file. GWT newbie here.

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  • Vim: Call an ex command (set) from function?

    - by sixtyfootersdude
    Drawing a blank on this, and google was not helpful. Want to make a function like this: function JakPaste() let tmp = :set paste? if tmp == "paste" set nopaste else set paste endif endfunction map <F2> :call JakPaste()<CR> However this does not work. I have isolated the broken line: function JakPaste() let tmp = set paste? endfunction map <F2> :call JakPaste()<CR> Pressing F2 results in this error: Error detected while processing function JakPaste: line 1: E121: Undefined variable: set E15: Invalid expression: set paste? Hit ENTER or type command to continue How should I call an ex command (set) from a vim function? This seems somewhat relevant however I still don't get it.

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  • Onshore work methods V Offshore Supplier work methods - how to strike a balance?

    - by LadyCoconut
    Any advice on the best way to strike a balance between the work methods of an offshore supplier and the work methods of a new onshore team? We have an offshore supplier with about 2 years who have their own working practices and methods. I was bought in as the first onshore developer for my company with the view to vetting the code that comes in and putting together some best practices. Now from what I've seen there are lots of holes in their process (e.g. estimation, planning, code reviews, coding standards from about 10 years ago, no concept of mocking, refactoring etc). I need to be seen as a problem solver and not a problem creator but also I need to try and be somewhat forceful of what they are doing needs improving and at the end of the day they are a supplier. I would appreciate any advice. Thanks.

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  • Multiple outliers for two variable linear regression

    - by Dave Jarvis
    Problem Building on my previous question, the "extreme" outliers in the following graph are somewhat obvious: Question Given: T - Set of all temperatures Y - Set of all years ST - Sum of temperatures. SY - Sum of years. N - Number of elements T(n) - Temperature of the nth element in the temperature set How would you implement an efficient MySQL stored procedure or user-defined function (UDF) to determine if T(n) is an outlier? (If such an implementation already exists, that would be good to know as well.) Related Sites I am slowly working through these sites to get a better understanding of the problem: Multiple Outliers Detection Procedures in Linear Regression M-estimator Measure of Surprise for Outlier Detection Ordinary Least Squares Linear Regression Many thanks!

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  • Selling an app to a company - How much to charge?

    - by Moshe
    I wrote an app targeting a particular clientele. A software company with a reputation among my target audience is willing to negotiate a price to either license or buy it. As a newcomer to the app store, I am not sure that I will successfully market it myself. What would be appropriate terms of a sale or license and what about pricing? I am looking for answers that draw from personal experience with software, although not necessarily apps. I've seen this post on SO, but it's a few years old and I assume that the app market has changed and stabilized somewhat. Thanks.

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  • how to set the background image property of a div to a dynamically generated image

    - by tixrus
    I have some divs and each one has its own background image. The base images as stored is just a black silhouette. What I would like to do is use the PHP GD package to modify the color of those images somewhat randomly and have the modified randomly coloured images be the background images of the divs. One way to do it is just create GD images structures from the original files, modify them, save the results as a temp file, pass this filename into the client, and then use jquery to modify the css background image properties of the divs to be the new file. But this is going to leave a lot of files laying around to garbage collect. Is there some way to do it without creating a bunch of files?

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  • Code Signing Services

    - by bogdan
    I'm developing a System Preference Pane that runs a background application. I'm planning on codesigning the background application and I'll be using the kill flag of codesign (http://gemma.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/codesign.1.html). From my understanding, this kill flag will not allow the background application to be run if it's signature doesn't match. My problem with this approach is that it doesn't provide any feedback to the user and, for somewhat reason, the application gets corrupted, it will refuse to launch without any information. I'd like to use the Code Signing Service from the System Preference Pane to check the validity of the background application. However, I couldn't find how to use it to check the validity of an external file. Is this possible using the Code Signing Service or should I NSTask codesign directly? My application is targeted for 10.6 so it doesn't matter which I use. Thank you!

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  • Django foreign keys cascade deleting and "related_name" parameter (bug?)

    - by Wiseman
    In this topic I found a good way to prevent cascade deleting of relating objects, when it's not neccessary. class Factures(models.Model): idFacture = models.IntegerField(primary_key=True) idLettrage = models.ForeignKey('Lettrage', db_column='idLettrage', null=True, blank=True) class Paiements(models.Model): idPaiement = models.IntegerField(primary_key=True) idLettrage = models.ForeignKey('Lettrage', db_column='idLettrage', null=True, blank=True) class Lettrage(models.Model): idLettrage = models.IntegerField(primary_key=True) def delete(self): """Dettaches factures and paiements from current lettre before deleting""" self.factures_set.clear() self.paiements_set.clear() super(Lettrage, self).delete() But this method seems to fail when we are using ForeignKey field with "related_name" parameter. As it seems to me, "clear()" method works fine and saves the instance of "deassociated" object. But then, while deleting, django uses another memorized copy of this very object and since it's still associated with object we are trying to delete - whooooosh! ...bye-bye to relatives :) Database was arcitectured before me, and in somewhat odd way, so I can't escape these "related_names" in reasonable amount of time. Anybody heard about workaround for such a trouble?

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  • bjam wih visual studio 2010

    - by ra170
    ok, so I ran into problems with Boost under visual studio 2010, so I decided to rebuild it with bjam: such as: bjam --toolset=msvc-10.0 --build-type=complete After running bjam (successfully?) it created a new directory under boost_1_42_0 called: bin.v2 Inside bin.v2 is directory called: libs. Two issues: 1. there's lot less libs under that new directory (about 13), the old directory libs has 88. Is it supposed to be like that or did something fail? 2. the structure is somewhat different too. What do I do with this exactly? Meaning, do I copy it over to the original libs, delete the old libs, try rebulding it with different flags?

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  • How to Obtain Data to Pre-Populate Forms.

    - by Stan
    The objective is to have a form reflect user's defined constraints on a search. At first, I relied entirely upon server-side scripting to achieve this; recently I tried to shift the functionality to JavaScript. On the server side, the search parameters are stored in a ColdFusion struct which makes it particularly convenient to have the data JSON'ed and sent to the client. Then it's just a matter of separately iterating over 'checkable' and text fields to reflect the user's search parameters; jQuery proved to be exceptionally effective in simplifying the workload. One observable difference lies in performance. The second method appeared to be somewhat slower and didn't work in IE8. Evidently, the returned JSON'ed struct was seen as an empty object. I'm sure it can be fixed, though before spending any more time with it, I'm curious to hear how others would approach the task. I'd gladly appreciate any suggestions. --Stan

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  • The speed of .NET in numerical computing

    - by Yin Zhu
    In my experience, .net is 2 to 3 times slower than native code. (I implemented L-BFGS for multivariate optimization). I have traced the ads on stackoverflow to http://www.centerspace.net/products/ the speed is really amazing, the speed is close to native code. How can they do that? They said that: Q. Is NMath "pure" .NET? A. The answer depends somewhat on your definition of "pure .NET". NMath is written in C#, plus a small Managed C++ layer. For better performance of basic linear algebra operations, however, NMath does rely on the native Intel Math Kernel Library (included with NMath). But there are no COM components, no DLLs--just .NET assemblies. Also, all memory allocated in the Managed C++ layer and used by native code is allocated from the managed heap. Can someone explain more to me? Thanks!

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  • Best Java 'framework' for LOW-END 3D Graphics?

    - by CodeJustin.com
    I've made my share of 2D games on various platforms but I have never developed a 3D game. I want to make a small "mmorpg". I already made my server in python and it works just fine with my flash 2D game but I decided I want to step it up and try out 3D. I want to make a 3D game for the web browser and I think Java might be a good choice for this. So basically I'm just looking for a straight forward and well documents 'framework' to make LOW-END 3D games. Keep in mind that I will be targeting peoples with very low-end PC's (plus my 3d modeling skills aren't great so I wouldn't mind hiding it somewhat, haha)

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  • Which revision of html5lib is stable?

    - by Mat
    html5lib notes that it's latest release (0.11) is somewhat old. Using the Python portion, I have recursion problems as noted in Issue 70 and Issue 59 but can't find a recent Mercurial revision that is stable. The latest tip is no good, I got the following error from python setup.py install: byte-compiling build/bdist.linux-x86_64/egg/html5lib/treewalkers/_base.py to _base.pyc File "build/bdist.linux-x86_64/egg/html5lib/treewalkers/_base.py", line 40 "data": []} ^ SyntaxError: invalid syntax And I get the following errors at runtime: soup = parser.parse(page.read()) File "build/bdist.linux-x86_64/egg/html5lib/html5parser.py", line 165, in parse File "build/bdist.linux-x86_64/egg/html5lib/html5parser.py", line 144, in _parse File "build/bdist.linux-x86_64/egg/html5lib/html5parser.py", line 454, in processDoctype TypeError: insertDoctype() takes exactly 4 arguments (2 given) I'm using it on Python 2.5.2 with lxml and BeautifulSoup.

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  • Language in a Sandbox in Rails

    - by Jon Romero
    I've found that there WAS a sandbox gem (created by the guys that made try ruby in your browser but it was compatible only with Ruby 1.8. Another problem is that I cannot find it anymore (it seems they stop serving the gem from the servers...). So, is there any secure way of running ruby in a sandbox (so you can run it from your browser)? Or an easy way to run (for example lua/python) in a sandbox (no filesystem access, no creation of objects etc) and be called from Ruby (Rails 2.2)? I want to make an application like try_ruby even without having a ruby underneath. But it has to be an easy language (I saw there was a prolog in ruby, even a lisp but I don't think they are easy to learn languages...). So, do you have any suggestions or tips? Or should I just start creating my own DSL in Ruby (if there is a solution in creating a somewhat safe system)? Thx

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  • How best to pre-install OR pre-load OR cache Java Script library to optimize performance.

    - by Kabeer
    Hello. I am working for an intranet application. Therefore I have some control on the client machines. The Java Script library I am using is somewhat big in size. I would like to pre-install OR pre-load OR cache the Java Script library on each machine (each browser as well) so that it does not travel for each request. I know that browsers do cache a Java Script library for subsequent requests but I would like the library to be cached once so all subsequent requests, sessions and users. What is the best mechanism to achieve this?

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  • MLS Integration (RETSBond RI or?)

    - by prodigitalson
    I'm looking Specifically for some detailed information on RETSBond Integrator (RI) or something similar. Has anyone used it? Drawbacks? benefits? What I need is something that provides a PHP API out of the box or some kind of RPC exposure. This thing seems to provide an API for batching the MLS server and putting in my own DB which is acceptable although ideally I'd prefer something totally external. Do any MLS services provide that that you are aware of? I realize this is somewhat subjective but I'm looking for a starting point on different services/vendors to research.

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  • Why does UIImageView "darken"/saturate PNG images, and can I stop it?

    - by Ben
    I have a PNG file in a UIImageView, and next to that I have an EAGLView which displays the continuation of that same image (long story) as a texture, carved from the same original PNG. The point is, that these images, which should match up flawlessly, actually have somewhat differing color saturation. Normally I'd blame my handling of the PNG texture load in GL, but when I hold Preview (with the PNG) up to the iPhone simulator, it's GL that's spot on, and the UIImageView that's wrong! It's taken the image and made it ever-so-slightly more saturated. The image view is opaque with 100% alpha. I verified this on a clean UIImageView with another PNG file when put next to Preview. Anyone know what's up?

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  • Should I worry about reigning in namespace number/length/scope?

    - by Jay
    I've recently reorganized a solution-in-progress from 24 projects to 4. To keep the copious files organized in the "main" project, things are in folders in folders in folders. I think I've preserved a logical, discoverable arrangement of the solution content. As a result, of course, I end up with namespaces like AppName.DataAccess.NHibernate.Fluent.Mappings. Is there any compelling reason that I should care about flattening out the namespace hierarchy when my project has a somewhat deeply nested folder structure? (I am not concerned about resolving or managing using directives; I let ReSharper do all the heavy lifting here.)

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  • When do you learn from your mistakes?

    - by smayers81
    When are you supposed to learn from your mistakes in coding / design? Is it something you take with you to the next project or do you learn in the middle of your current one, sacrificing consistency for cleaner, more well-informed code? For example, my application can be distinctly demarcated down two lines of business -- say one side is for sales and the other is for marketing. Both are somewhat tied together, but as far as the team structure, use cases, developers, etc. the app consists of the Sales code and the Marketing Code. Now, say the Sales code went in first and while good-intentioned, made some bad mistakes. Should the Marketing Code follow suit and make the same mistakes for the sake of consistency or should Marketing architects and designers instead learn from the mistakes that Sales made and developer a cleaner codebase, even though Sales and Marketing are in the exact same system? Basically, do you learn from your mistakes while in a project or do you continue to pile crap on top of crap?

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