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• Kohana3: Absolute path to a file

  - by Svish

  Say I have a file in my kohana 3 website called assets/somefile.jpg. I can get the url to that file by doing echo Url::site('assets/somefile.jpg'); // /kohana/assets/somefile.jpg Is there a way I can get the absolute path to that file? Like if I want to fopen it or get the size of the file or something like that. In other words, I would like to get something like /var/www/kohana/assets/somefile.jpg or W:\www\kohana\assets\somefile.jpg or whatever is the absolute path.

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• C#: What would you name an IEnumerable class?

  - by Svish

  When reading this question I started to wonder a bit. Say you have these two: class ProductCollection : ICollection<Product> class ProductList : IList<Product> What would you call one that were an IEnumerable<Product>? class Product--- : IEnumerable<Product> Before I read that other question I might have called it a ProductCollection actually, but taking the new info into account, that would have been a bit misleading since it does not implement ICollection<Product>. Could you call it Products? var products = new Products(); // products is/are products Almost works but sounds a bit strange... What would you call it?

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• Microsoft Reporting: Setting subreport parameters in code

  - by Svish

  How can I set a parameter of a sub-report? I have successfully hooked myself up to the SubreportProcessing event, I can find the correct sub-report through e.ReportPath, and I can add datasources through e.DataSources.Add. But I find no way of adding report parameters?? I have found people suggesting to add them to the master report, but I don't really want to do that, since the master report shouldn't have to be connected to the sub-report at all, other than that it is wrapping the sub-report. I am using one report as a master template, printing name of the report, page numbers etc. And the subreport is going to be the report itself. And if I could only find a way to set those report parameters of the sub-report I would be good to go... Clarification: Creating/Defining the parameters is not the problem. The problem is to set their values. I thought the natural thing to do was to do it in the SubreportProcessing event. And the SubreportProcessingEventArgs do in fact have a Parameters property. But it is read only! So how do you use that? How can I set their value?

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• PHP: Odd behaviour with date_sunset function

  - by Svish

  I'm having a look at the date_sunset function in PHP and have met an issue that I find a bit strange. I have this piece of code: $sunset = date_sunset(mktime(0, 0, 0, 5, 14, 2010), $format, // Format 55.596041, // Latitude 12.992495, // Longitude 90, // Zenith 2 // GMT Offset ); For the three different formats, that would give me: SUNFUNCS_RET_STRING 21:05 SUNFUNCS_RET_DOUBLE 21.095732016315 SUNFUNCS_RET_TIMESTAMP 1273863944 // H:i:s O -> 19:05:44 +0000 Why is the timestamp format ignoring the gmt offset? Is is supposed to be like that? If so what is the reason behind that?

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• C#: Is it possible to use expressions or functions as keys in a dictionary?

  - by Svish

  Would it work to use Expression<Func<T>> or Func<T> as keys in a dictionary? For example to cache the result of heavy calculations. For example, changing my very basic cache from a different question of mine a bit: public static class Cache<T> { // Alternatively using Expression<Func<T>> instead private static Dictionary<Func<T>, T> cache; static Cache() { cache = new Dictionary<Func<T>, T>(); } public static T GetResult(Func<T> f) { if (cache.ContainsKey(f)) return cache[f]; return cache[f] = f(); } } Would this even work? Edit: After a quick test, it seems like it actually works. But I discovered that it could probably be more generic, since it would now be one cache per return type... not sure how to change it so that wouldn't happen though... hmm Edit 2: Noo, wait... it actually doesn't. Well, for regular methods it does. But not for lambdas. They get various random method names even if they look the same. Oh well c",)

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• Is it safe to convert varchar and char into nvarchar and nchar in SQL Server?

  - by Svish

  We currently have a number of columns in the database which are of type varchar. The application that uses them are in C# and it uses Linq2Sql for the communication (or what to call it). We would like to support unicode characters, which means we would have to convert the varchar columns into nvarchar. Is this a safe operation? Is it just a matter of changing the column type and updating the dbml file, or are there more stuff that needs to be done? Any changes in the C# code? Do I need to somehow convert the text that already exist in the database manually, or is it handled for me?

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• C#: How to use SHOpenFolderAndSelectItems

  - by Svish

  Could someone give an example on how to use the shell function SHOpenFolderAndSelectItems from C#? I don't quite get how to use these kind of functions and couldn't find it on pinvoke.net... =/ Say I have three files called X:\Pictures\a.jpg X:\Pictures\s.jpg X:\Pictures\d.jpg I then want to open up the X:\Pictures folder with a.jpg, s.jpg and d.jpg selected.

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• jquery: How to completely remove a dialog on close

  - by Svish

  When an ajax operation fails, I create a new div with the errors and then show it as a dialog. When the dialog is closed I would like to completely destroy and remove the div again. How can I do this? My code looks something like this at the moment: $('<div>We failed</div>') .dialog( { title: 'Error', close: function(event, ui) { $(this).destroy().remove(); } }); When I run this the dialog box shows up correctly, but when I close it the dialog is still visible in the html (using FireBug). What am I missing here? Something I have forgotten? Update: Just noticed my code gives me an error in the firebug console. $(this).destroy is not a function Anyone able to help me out? Update: If I do just $(this).remove() instead, the item is removed from the html. But is it completely removed from the DOM? Or do I somehow need to call that destroy function first as well?

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• Why can I not add a set accessor to an overriden property?

  - by Svish

  In a base class I have this property: public virtual string Text { get { return text; } } I want to override that and return a different text, but I would also like to be able to set the text, so I did this: public override string Text { get { return differentText; } set { differentText = value; } } This however does not work. I get a red squiggly under set saying that I can not override because it does not have a set accessor. Why is this aproblem? What should I do?

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• How to generate a user role grid

  - by Svish

  I have the following tables: users (id, username, ... ) roles (id, name) roles_users (user_id, role_id) I am wondering how I can create a nice sort of user-role-grid from that which an admin can use to administer roles to users in a clear way. What I would like is basically a table full of checkboxes sort of like this: Login Editor Admin Alice ¦ ¦ ¦ Bob ¦ ? ? Carol ¦ ¦ ? [Apply] Generating the table isn't too much of a deal, but I am very unsure how to handle it when it comes to how to name all the checkboxes and especially how to read and update the database in a not too clumsy way. Does anyone have any good advice or pointers on how to do this in a mostly clean way? I'm using the Kohana 3 framework, if there is anything there that can make this even easier, but I of course welcome any answer.

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• Kohana 3: What are Validate::label and Validate::labels for?

  - by Svish

  What are the Validate::label and Validate::labels functions for in Kohana 3? What are they meant to be used for?

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• Is it safe to display user input as input values without sanitation?

  - by Svish

  Say we have a form where the user types in various info. We validate the info, and find that something is wrong. A field is missing, invalid email, et cetera. When displaying the form to the user again I of course don't want him to have to type in everything again so I want to populate the input fields. Is it safe to do this without sanitation? If not, what is the minimum sanitation that should be done first? And to clearify: It would of course be sanitized before being for example added to a database or displayed elsewhere on the site.

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• Mercurial: How to ignore changes to a tracked file

  - by Svish

  I have a file with database settings in my project which I have set to some defaults. The file is tracked by mercurial and checked in. Since this file will be edited with different values various developer machines, is there a way I can tell Mercurial to ignore new changes to this file? I tried adding the file to the .hgignore file, but since the file is tracked it isn't ignored. This is alright and good in other situations, but I am wondering if there is something I can do here.

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• When to use ellipsis after menu items

  - by Svish

  In pretty much all applications that have a menu bar, some of the items have an ellipsis (...) after them, and some don't. Is there a well known convention on when to put that ellipsis there and when not to? When do you do it? Do you do it? I have looked at various windows applications, and this is what I have come to: Ellipsis Menu items which opens a form that require user input to do something (Replace, Go to, Font) No ellipsis Menu items which just does something (Cut, Paste, Exit, Save) Menu items which opens a form that does not require user input (About, Check for Updates) But then there always seems to be menu items that doesn't follow this rule. For example the Help items (How do I, Search, Index) and the Find and Replace (Quick Find, Find in Files, Find Symbol) in Visual Studio. So after thinking about it a bit more I know think this might be the thing: Ellipsis Menu items that will definitely open a modal window. No Ellipsis Menu items that opens a non-modal window. Menu items that doesn't open any window. Menu items that most likely won't open a modal window (Like Save, which does open a modal window if you haven't saved before or something like that, but otherwise don't) What do you guys think?

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• jQuery: How to collect values from sliders into simple object with id as keys

  - by Svish

  I have several jQuery UI Sliders and I want to collect their values. Thought it would be a simple task, but when I was going to do it I got stuck and not quite sure what to do anymore :p The object I would like to end up with should look something like this: { a: 80, b: 90, c: 20, ... } I can do it manually like this: var values = { a: $('#a').slider('value'), b: $('#b').slider('value'), c: $('#c').slider('value'), ... }; But that's a bit tedious, especially if I need to add or remove or rename. Was hoping I could do something with the map or each function or something like that, but I can't figure it out. Anyone have some clever ideas?

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• C#: Custom assembly directory

  - by Svish

  Say we have an application which consists of one executable and 5 libraries. Regularly all of these will be contained in one directory and the libraries will be loaded from there. Is it possible to do so that I can have for example some of the libraries in one directory called Lib, and the rest in one called Lib2? So that the application directory would only contain the executable itself and the other assemblies would be contained in various logical directories. How can I do this? And I would like to know how to do the loading of the assemblies, but also how to make the building of the application put the assemblies in the right directory.

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• KO3: How to deal with stylesheets and scriptfiles

  - by Svish

  I'm using Kohana 3 and it's template controller. My main site template controller currently looks something like this: <?php defined('SYSPATH') or die('No direct script access.'); abstract class Controller_SiteTemplate extends Controller_Template { public function before() { parent::before(); // Initialize default template variables $this->template->styles = Kohana::config('site.styles'); $this->template->scripts = Kohana::config('site.scripts'); $this->template->title = ''; $this->template->content = ''; } } And then in my template view I do: <?php # Styles foreach($styles as $file => $media) echo HTML::style($file, array('media' => $media)).PHP_EOL ?> <?php # Scripts foreach($scripts as $file) echo HTML::script($file).PHP_EOL ?> This works alright. The problem is that it requires the style- and script files to be added in the controller, which shouldn't really have to care about those. It also makes it a hassle if the views are done by someone else than me since they would have to fool around with the controller just to add a new stylesheet or a new script file. How can this be done in a better way? Just to clearify, what I am wondering is how to deal with page specific stylesheets and scripts. The default and site-wide ones I have no problem with fetching from a config file or just put directly in the template view. My issue is how to add custom ones for specific pages in a good way.

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• PHP: Find element with certain property value in array

  - by Svish

  I'm sure there is an easy way to do this, but I can't think of it right now. Is there an array function or something that lets me search through an array and find the item that has a certain property value? For example: $people = array( array( 'name' => 'Alice', 'age' => 25, ), array( 'name' => 'Waldo', 'age' => 89, ), array( 'name' => 'Bob', 'age' => 27, ), ); How can I find and get Waldo?

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• PHP: How to overwrite values in one array with values from another

  - by Svish

  I have an array with default settings, and one array with user-specified settings. I want to merge these two arrays so that the default settings gets overwritten with the user-specified ones. I have tried to use array_merge, which does the overwriting like I want, but it also adds new settings if the user has specified settings that doesn't exist in the default ones. Is there a better function I can use for this than array_merge? Or is there a function I can use to filter the user-specified array so that it only contains keys that also exist in the default settings array? (PHP version 5.3.0)

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• jquery: Toggle elements based on result from a function

  - by Svish

  I have a number of table rows that I would like to toggle the visibility of. They should be visible if a data item I have set on them earlier equals a selected value in a form. This is what I have so far: $('#category-selector').change(function(event) { var category_id = $(this).val(); if(!category_id) { $('tr', '#table tbody').show(); } else { $('tr', '#table tbody').toggle(); } }); Of course this just toggles them on and off. Thing is that I thought I was able to give toggle a function that would decide if each row should be on or off, but it turns out I can only give it a boolean condition which would be an all or nothing deal kind of... So, I have this function: function() { return $(this).data('category_id') == category_id; } How can I use that to go through all the rows and toggle them on or off? Or is there a better approach to this? What should I do?

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• jquery: Flash messages

  - by Svish

  With jQuery, how can I display a flash message at the top of the page in an easy way? Is there something built-in, or a plugin, or is it easy enough to do it yourself? What I mean is like after a successful ajax post I would like to just say "hey, it went good" in a non-obtrusive way.

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• PHP: How to overwrite values in one array with values from another without adding new keys to the ar

  - by Svish

  I have an array with default settings, and one array with user-specified settings. I want to merge these two arrays so that the default settings gets overwritten with the user-specified ones. I have tried to use array_merge, which does the overwriting like I want, but it also adds new settings if the user has specified settings that doesn't exist in the default ones. Is there a better function I can use for this than array_merge? Or is there a function I can use to filter the user-specified array so that it only contains keys that also exist in the default settings array? (PHP version 5.3.0) Example of what I want $default = array('a' => 1, 'b' => 2); $user = array('b' => 3, 'c' => 4); // Somehow merge $user into $default so we end up with this: Array ( [a] => 1 [b] => 3 )

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• C#: How to get all public (both get and set) string properties of a type

  - by Svish

  I am trying to make a method that will go through a list of generic objects and replace all their properties of type string which is either null or empty with a replacement. How is a good way to do this? I have this kind of... shell... so far: public static void ReplaceEmptyStrings<T>(List<T> list, string replacement) { var properties = typeof(T).GetProperties( -- What BindingFlags? -- ); foreach(var p in properties) { foreach(var item in list) { if(string.IsNullOrEmpty((string) p.GetValue(item, null))) p.SetValue(item, replacement, null); } } } So, how do I find all the properties of a type that are: Of type string Has public get Has public set ? I made this test class: class TestSubject { public string Public; private string Private; public string PublicPublic { get; set; } public string PublicPrivate { get; private set; } public string PrivatePublic { private get; set; } private string PrivatePrivate { get; set; } } The following does not work: var properties = typeof(TestSubject) .GetProperties(BindingFlags.Instance|BindingFlags.Public) .Where(ø => ø.CanRead && ø.CanWrite) .Where(ø => ø.PropertyType == typeof(string)); If I print out the Name of those properties I get there, I get: PublicPublic PublicPrivate PrivatePublic In other words, I get two properties too much. Note: This could probably be done in a better way... using nested foreach and reflection and all here... but if you have any great alternative ideas, please let me know cause I want to learn!

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• PHP: File exists and is in a certain sub-directory

  - by Svish

  I get a file path to a user file and I want to make sure that this path is to a valid existing user file and not to something bogus or a system file or something like that. I know I can use file_exists to check that it exists, but I'm not sure how I should make sure that the file is in a certain sub-directory...

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• jquery: How to deal with 'this' in ajax callbacks

  - by Svish

  I currently have code similar to this for a form: $('#some-form') .submit(function() { // Make sure we are not already busy if($(this).data('busy')) return false; $(this).data('busy', true); // Do post $.post("some/url", $(this).serialize(), function(data) { if(data.success) // Success is a boolean I set in the result on the server { // Deal with data } else { // Display error } $('#some-form') .removeData('busy'); }); return false; }); My issue is that I would like to somehow remove the need for knowing the form id in the post callback. In the end where I remove the busy data from the form, I'd like to somehow not have that hard coded. Is there any way I can do this? Is there a way I can hand whatever is in this to the post callback function? Since I know the id right now, I can get around it by doing what I have done, but I'd like to know how to not be dependant on knowing the id, since often I don't have an id. (For example if I have a link in each row in a table and all the rows have the same click handler.

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