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  • Yet another Rails routing question

    - by danhere
    I can't seem to grasp the Rails routing just yet. I want to be able to link the site to, for example, ...com/store/xbox360/Mass Effect 2 (which is /store(my controller)/:system/:title). I have the database entries that include the :system and :title variables (?). How would I route these to show up and filter these entries? Or is this something I need to set up in the controller? I'm lost. Thanks so much for your help.

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  • Question about select UITableViewCell fields

    - by Joaquin McCoy
    Hi guys, I've a custom UITableViewCell like this: +--------------------------+ | username | | | | --- <image> -- | | | | <like it> | +--------------------------+ It display an username, an image and a button "Like it" to like image. I don't want that the entire cell is selectable, I want a user can tap on "username" to see a new view that show username information. The same for image, when user tap on image, he could see the image in a new view. Now I can only select my entire cell. How can I implement something like this? Thanks. When you click on the username you'll see a view for user information. The entire cell is not selectable.

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  • Simple Binding question, unable to bind to button command in a DataTemplate using MVVM Light Toolkit

    - by deliberative assembly
    I've been attempting to bind to buttons within a DataTemplate without much success. The button does not fire. Button Click works successfully outside of the DataTemplate. Yet if I create a Click="button_click" the click button is fired. The Button Content binds perfectly as well. Example to illustrate.. Why does the command not fire? Advice on how this should be handled this? The example is a simplified version of my real problem, I am currently not using a Listbox. I only recreated the same problem with a listbox..

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  • jquery javascript question

    - by mckenzie
    Hello, var val = $("#desc").val(); // input box var val2 = $("#type").val(); // select box if((val=='') || (val2 == '')) { alert("err"); } else { // codes } when i select dropdown and not type anything on inputbox, the alert err still comes out? how to make it when dropdown is selected, it goes to else clause?

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  • jquery simplemodal question (about window overflow)

    - by Matthew Steiner
    I noticed that if the height of the window is too small (meaning that the modal is taller than the window is), then even scrolling up or down won't reveal more of the modal, since it is constantly centering itself to the center of the window. Is there a good way of changing this? I have a tall modal that if someone's using a short monitor it may cause problems. Not to mention just general usability. I would guess that somewhere in the code you can test for if the window height is less than the modal to not worry about centering it vertically? Ideas?

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  • Using explicitly numbered repetition instead of question mark, star and plus

    - by polygenelubricants
    I've seen regex patterns that use explicitly numbered repetition instead of ?, * and +, i.e.: Explicit Shorthand (something){0,1} (something)? (something){1} (something) (something){0,} (something)* (something){1,} (something)+ The questions are: Are these two forms identical? What if you add possessive/reluctant modifiers? If they are identical, which one is more idiomatic? More readable? Simply "better"?

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  • OWL inferencing question

    - by user439170
    I am using the Jena semantic web framework version 2.6.3. I have code that creates a model with owl inferencing and then adds the following triples: [:bnode-3 rdf:type owl:Restriction] [:bnode-3 owl:onProperty :offspringOf] [:bnode-3 owl:someValuesFrom :Person] [:bnode-3 rdfs:subClassOf :Person] bnode-3 is supposed to be a restriction class which, for example, would contain :joe if :bob is a :Person and the following triple were asserted: [:joe :offspringOf :bob]. Then, since the restriction class is a subclass of Person, :joe would also be a person. And, in fact, this works. Whats confusing to me is that after I assert just the 4 triples at the top of this post, the inferencer creates a blank node which is a Person. In other words, the following triple is now in the model: [_:b0 rdf:type :Person] I don't understand why it would do this. Any help in understanding this would be greatly appreciated. Thanks. Kent.

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  • setBit java method using bit shifting and hexadecimal code - question

    - by somewhat_confused
    I am having trouble understanding what is happening in the two lines with the 0xFF7F and the one below it. There is a link here that explains it to some degree. http://www.herongyang.com/java/Bit-String-Set-Bit-to-Byte-Array.html I don't know if 0xFF7FposBit) & oldByte) & 0x00FF are supposed to be 3 values 'AND'ed together or how this is supposed to be read. If anyone can clarify what is happening here a little better, I would greatly appreciate it. private static void setBit(byte[] data, final int pos, final int val) { int posByte = pos/8; int posBit = pos%8; byte oldByte = data[posByte]; oldByte = (byte) (((0xFF7F>>posBit) & oldByte) & 0x00FF); byte newByte = (byte) ((val<<(8-(posBit+1))) | oldByte); data[posByte] = newByte; } passed into this method as parameters from a selectBits method was setBit(out,i,val); out = is byte[] out = new byte[numOfBytes]; (numOfBytes can be 7 in this situation) i = which is number [57], the original number from the PC1 int array holding the 56-integers. val = which is the bit taken from the byte array from the getBit() method.

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  • Question about how to implement a c# host application with a plugin-like architecture

    - by devoured elysium
    I want to have an application that works as a Host to many other small applications. Each one of those applications should work as kind of plugin to this main application. I call them plugins not in the sense they add something to the main application, but because they can only work with this Host application as they depend on some of its services. My idea was to have each of those plugins run in a different app domain. The problem seems to be that my host application should have a set of services that my plugins will want to use and from what is my understanding making data flow in and out from different app domains is not that great of a thing. On one hand I'd like them to behave as stand-alone applications(although, as I said, they need to use lots of times the host application services), but on the other hand I'd like that if any of them crashes, my main application wouldn't suffer from it. What is the best (.NET) approach to this kind of situation? Make them all run on the same AppDomain but each one in a different Thread? Use different AppDomains? One for each "plugin"? How would I make them communicate with the Host Application? Any other way of doing this? Although speed is not an issue here, I wouldn't like for function calls to be that much slower than they are when we're working with just a regular .NET application. Thanks

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  • Visual Basic 6 ADO Update question...

    - by Dave
    Hi, I've been working with a Legacy application which interacts with a database through ADODB, and most of the changes to records follow a fairly straightforward pattern of: Create a Recordset from a query Make various change to the recordset call .Update on the recordset. What I'm wondering is, with ADODB recordsets, is there anyway to extract the 'changes'. The logic which changes the recordset is scattered about, and all I need is the changes, not how it was changed... Any suggestions for tracking changes in a recordset (in code, a trigger on the DB or similar is no use here) Thanks in advance

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  • Simple WCF question.

    - by bearrito
    So I am learning WCF and I have run across an issue that I believe has to do with Instance Control/State but I am not sure. Workflow is as follows, Basic client/server paradigm. The client calls a Method RetrieveBusinessObjects(criteria) and the server calls the datalayer and then puts them in an IList on the server side. It does not return this list to the calling Client. The client would then call a method say DisplayBusinessObjects() which would retrieve the IList from the Server, serialize them, bring them across the wire and display them. If i try this using the WCFTestClient it works. If I run it from an actual client then I get back an BusinessObject[] of size 0. Which to me indicates I had no objects to return. Is that a state mgmt issue or am I missing something?

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  • Database scaling question

    - by Anthony
    My app has outgrown just the one vps server (using Mediatemple DV). I want to put the database on another server. Does it have to be another Mediatemple server? Is it possible to use another hosting company and will the connections across the internet cause a slowdown if I choose to use say Rackspace or Linode for the DB server? btw, using mysql

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  • Android 2.2: Screen brightness/timeout question

    - by Johan
    Im using the following code to adjust the brightness of the screen: public void SetBright(float value) { Window mywindow = getWindow(); WindowManager.LayoutParams lp = mywindow.getAttributes(); lp.screenBrightness = value; mywindow.setAttributes(lp); } But i want the brightness to be 0% for a specific time. But when i use SetBright(0.0f), i cant change it back. I made a timer that runs for a minute with 0% brightness, then turns it back to 100%. Works when i use 10% for example. But when i turn it to 0% i cant seem to wake it up again. Any ideas how to solve this?

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  • XNA Vector2 Rotation Question

    - by Tom Allen
    I'm messing about with some stuff in XNA and am trying to move an object around asteroids-style in that you press left and right to rotate and up/down to go forwards and backwards in the direction you are pointing. I've got the rotation of the sprite done, but i can't get the object to move in the direction you've pointed it, it always moves up and down on the x = 0 axis. I'm guessing this is straight forward but I just can't figure it out. My "ship" class has the following properties which are note worthy here: Vector2 Position float Rotation The "ship" class has an update method is where the input is handled and so far I've got the following: public void Update(GameTime gameTime) { KeyboardState keyboard = Keyboard.GetState(); GamePadState gamePad = GamePad.GetState(PlayerIndex.One); float x = Position.X; float y = Position.Y; if (keyboard.IsKeyDown(Keys.Left)) Rotation -= 0.1f; if (keyboard.IsKeyDown(Keys.Right)) Rotation += 0.1f; if (keyboard.IsKeyDown(Keys.Up)) y -= ??; if (keyboard.IsKeyDown(Keys.Down)) y += ??; this.Position = new Vector2(x, y); } Any help would be most appreciated!

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  • Mysql - help me optimize this query (improved question)

    - by sandeepan-nath
    About the system: - There are tutors who create classes and packs - A tags based search approach is being followed.Tag relations are created when new tutors register and when tutors create packs (this makes tutors and packs searcheable). For details please check the section How tags work in this system? below. Following is the concerned query SELECT SUM(DISTINCT( t.tag LIKE "%Dictatorship%" )) AS key_1_total_matches, SUM(DISTINCT( t.tag LIKE "%democracy%" )) AS key_2_total_matches, COUNT(DISTINCT( od.id_od )) AS tutor_popularity, CASE WHEN ( IF(( wc.id_wc > 0 ), ( wc.wc_api_status = 1 AND wc.wc_type = 0 AND wc.class_date > '2010-06-01 22:00:56' AND wccp.status = 1 AND ( wccp.country_code = 'IE' OR wccp.country_code IN ( 'INT' ) ) ), 0) ) THEN 1 ELSE 0 END AS 'classes_published', CASE WHEN ( IF(( lp.id_lp > 0 ), ( lp.id_status = 1 AND lp.published = 1 AND lpcp.status = 1 AND ( lpcp.country_code = 'IE' OR lpcp.country_code IN ( 'INT' ) ) ), 0) ) THEN 1 ELSE 0 END AS 'packs_published', td . *, u . * FROM tutor_details AS td JOIN users AS u ON u.id_user = td.id_user LEFT JOIN learning_packs_tag_relations AS lptagrels ON td.id_tutor = lptagrels.id_tutor LEFT JOIN learning_packs AS lp ON lptagrels.id_lp = lp.id_lp LEFT JOIN learning_packs_categories AS lpc ON lpc.id_lp_cat = lp.id_lp_cat LEFT JOIN learning_packs_categories AS lpcp ON lpcp.id_lp_cat = lpc.id_parent LEFT JOIN learning_pack_content AS lpct ON ( lp.id_lp = lpct.id_lp ) LEFT JOIN webclasses_tag_relations AS wtagrels ON td.id_tutor = wtagrels.id_tutor LEFT JOIN webclasses AS wc ON wtagrels.id_wc = wc.id_wc LEFT JOIN learning_packs_categories AS wcc ON wcc.id_lp_cat = wc.id_wp_cat LEFT JOIN learning_packs_categories AS wccp ON wccp.id_lp_cat = wcc.id_parent LEFT JOIN order_details AS od ON td.id_tutor = od.id_author LEFT JOIN orders AS o ON od.id_order = o.id_order LEFT JOIN tutors_tag_relations AS ttagrels ON td.id_tutor = ttagrels.id_tutor JOIN tags AS t ON ( t.id_tag = ttagrels.id_tag ) OR ( t.id_tag = lptagrels.id_tag ) OR ( t.id_tag = wtagrels.id_tag ) WHERE ( u.country = 'IE' OR u.country IN ( 'INT' ) ) AND CASE WHEN ( ( t.id_tag = lptagrels.id_tag ) AND ( lp.id_lp 0 ) ) THEN lp.id_status = 1 AND lp.published = 1 AND lpcp.status = 1 AND ( lpcp.country_code = 'IE' OR lpcp.country_code IN ( 'INT' ) ) ELSE 1 END AND CASE WHEN ( ( t.id_tag = wtagrels.id_tag ) AND ( wc.id_wc 0 ) ) THEN wc.wc_api_status = 1 AND wc.wc_type = 0 AND wc.class_date '2010-06-01 22:00:56' AND wccp.status = 1 AND ( wccp.country_code = 'IE' OR wccp.country_code IN ( 'INT' ) ) ELSE 1 END AND CASE WHEN ( od.id_od 0 ) THEN od.id_author = td.id_tutor AND o.order_status = 'paid' AND CASE WHEN ( od.id_wc 0 ) THEN od.can_attend_class = 1 ELSE 1 END ELSE 1 END GROUP BY td.id_tutor HAVING key_1_total_matches = 1 AND key_2_total_matches = 1 ORDER BY tutor_popularity DESC, u.surname ASC, u.name ASC LIMIT 0, 20 The problem The results returned by the above query are correct (AND logic working as per expectation), but the time taken by the query rises alarmingly for heavier data and for the current data I have it is like 25 seconds as against normal query timings of the order of 0.005 - 0.0002 seconds, which makes it totally unusable. It is possible that some of the delay is being caused because all the possible fields have not yet been indexed. The tag field of tags table is indexed. Is there something faulty with the query? What can be the reason behind 20+ seconds of execution time? How tags work in this system? When a tutor registers, tags are entered and tag relations are created with respect to tutor's details like name, surname etc. When a Tutors create packs, again tags are entered and tag relations are created with respect to pack's details like pack name, description etc. tag relations for tutors stored in tutors_tag_relations and those for packs stored in learning_packs_tag_relations. All individual tags are stored in tags table. The explain query output:- Please see this screenshot - http://www.test.examvillage.com/Explain_query.jpg

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  • Quick question about pointers

    - by xbonez
    So, I have this code fragment: int * iPtr ; int * jPtr ; int i = 5, k = 7; iPtr = &i; jPtr = iPtr ; I have just started learning about pointers, and need to get some doubts cleared. is jPtr now essentially also pointing at i? I know I can change the value of i by using *iPtr, but how can I change the value of the object being pointed to by jPtr? How will changing the object being pointed to by jPtr affect the value of the object pointed to by iPtr, and i ?

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  • question about python COM programming

    - by usfree74
    Hey, I am trying to get the Dispatch object of IHTMLDocument3, so I wrote the following code wo = pythoncom.New('InternetExplorer.Application') wo.QueryInterface('{3050F673-98B5-11CF-BB82-00AA00BDCE0B}') But got the following error: pywintypes.com_error: (-2147467262, 'No such interface supported', None, None) Any idea on how to address this problem? Thanks, xin

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  • Motherboard memory question

    - by JERiv
    I am currently drawing up specs on a new workstation for my office. I am considering the Asus P6X58D for a motherboard. This board's specs list it as supporting 24 gigs of memory. Suppose I were to use six four gig memory cards and then two video cards with 1 gig of memory apiece. Is the maximum supported memory similar to how 32 bit operating systems only have enough address space for 4 gigs of memory? Simply: Will the board post? If so, will the system be able to address all the memory, both the 24 gigs on the ddr3 bus and the 3 gigs on the graphics card?

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  • c++ macros question

    - by rabidmachine9
    can somebody explain the following code please? #if 1 // loop type #define FOR_IS_FASTER 1 #define WHILE_IS_FASTER 0 // indexing type #define PREINCREMENT_IS_FASTER 1 #define POSTINCREMENT_IS_FASTER 0 #else // loop type #define FOR_IS_FASTER 1 #define WHILE_IS_FASTER 0 // indexing type #define PREINCREMENT_IS_FASTER 0 #define POSTINCREMENT_IS_FASTER 1 #endif #if PREINCREMENT_IS_FASTER #define ZXP(z) (*++(z)) #define ZX(z) (*(z)) #define PZ(z) (++(z)) #define ZP(z) (z) #define ZOFF (1) #elif POSTINCREMENT_IS_FASTER #define ZXP(z) (*(z)++) #define ZX(z) (*(z)) #define PZ(z) (z) #define ZP(z) ((z)++) #define ZOFF (0) #endif I can understand what the functions are doing but for example how does the pre-processor choose which ZXP will be execute if we call it later? What the 1 and 0 stand for? thanks in advance

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  • Data scheme question

    - by Matt
    I am designing a data model for a local city page, more like requirements for it. So 4 tables: Country, State, City, neighbourhood. Real life relationships is: Country owns multiple State which owns multiple cities which ows multiple neighbourhoods. In the data model: Do we link these with FK the same way or link each with each? Like in each table there will even be a Country ID, State ID, CityID and NeighbourhoodID so each connected with each? Other wise to reach neighbourhood from country we need to join 2 other tables in between? There are more tables I need to maintain for IP addess of cities, latitude/longitude, etc.

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  • Simple stupid foreach loop question

    - by user281180
    In the code below i`m trying to read a list of selected projects and a list of all projects available. I want to store the all the projects that have not been selected from the list of all projects. But with the code below, I`m having list of all projects...Where and how to break the second loop incase projectId.Value == selectedProjectId.Value ? public IEnumerable NotselectedProjects; public IEnumerable NotSelectedProjects() { if (this.NotselectedProjects == null) { List<SelectListItem> result = new List<SelectListItem>(); foreach (var selectedProjectId in selectedProjects) { foreach (var projectId in projectLists) { if (projectId.Value != selectedProjectId.Value) { result.Add(new SelectListItem { Selected = false, Text = projectId.Text, Value = projectId.Value }); this.NotselectedProjects = result.AsEnumerable(); } } } } return this.NotselectedProjects; }

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  • Another warning question: "Incompatible intiger to pointer conversion assigning to 'int *' from 'int'"

    - by Preston
    I have yet another pesky warning I would like gone. Basically, I have an int declared like this: @property (nonatomic, assign) int *myInt; and set like this: myInt = 0;. It is also synthesized in the implementation file. I am getting a warning on the line where I set the int's value and it says "Incompatible intiger to pointer conversion assigning to 'int *' from 'int'." What should I do to fix this?

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  • Question about ITextUndoHistory returned from TryGetHistory

    - by nick.ueda
    Everytime the IWpfTextView's TextBuffer changes I am trying to get the history's redostack and undostack and simply checking the count. When doing this I am encountering a "Method not supported exception" when trying to access the two stacks. Am I retrieving the history incorrectly or does VS not want me seeing/editing the contents of the stacks? I can post the code if necessary... Thanks, Nick

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