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  • dojox.enhancedGrid get Selected Row

    - by user256007
    How can I get the Selected Row Object of dojox.enhancedGrid ? I am using selectionMode: 'single' e.g. with Radio Buttons. dijit.byId("gridViewWidget").selection.selectedIndex Returns the rowIndex. But how to get the rowObject of that Index ? I can get the rowNode()But What I need is value of the id column of that Row. Its possible to travarse the HTML DOM returned by rowNode() But Is theer any straight forward way ?

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  • Why might SQL execute more quickly on SQL Server 2000 when NOT using a stored procedure?

    - by Kofi Sarfo
    I could see nothing wrong with the execution plan. Besides, as I understand it, SQL Server 2000 extended many of the performance benefits of stored procedures to all SQL statements by recognising new T-SQL statements against T-SQL statements of existing execution plans (by retaining execution plans for all SQL statements in the procedure cache, not just stored procedure execution plans) It's a fairly straight forward SELECT statement with sensible table joins, no transactions included or linked servers being referenced within the query and WITH (NOLOCK) table hints applied. The stored procedure was created by dbo and the user has all the necessary permissions. So my question is this: What are the likely reasons for a query to take only a few seconds to run but then take several minutes when identical T-SQL is run via a stored procedure?

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  • When is performance gain significant enough to implement that optimization?

    - by Zwei steinen
    Hi, following the text book, I do measure performance whenever I try optimizing my code. Sometimes, however, the performance gain is rather small and I can't decisively decide whether I should implement that optimization. For example, when a fix shortens an average response time of 100ms to 90ms under some conditions, should I implement that fix? What if it shortens 200ms to 190ms? How many condition should I try before I can conclude that it will be beneficial overall? I guess it's not possible to give a straight forward answer to this, as it depends on too many things, but is there a good rule of thumb that I should follow? Are there any guideline/best-practices?

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  • How to determine the pat of the current web site

    - by Velika2
    I wanted to create a function which would return the path of the current web site. This is what I thought was working while running in the IDE: Public Shared Function WebsiteAbsoluteBaseUrl() As String Dim RequestObject As System.Web.HttpRequest = HttpContext.Current.Request Return "http://" & RequestObject.Url.Host & ":" & _ RequestObject.Url.Port & "/" & _ RequestObject.Url.Segments(1) End Function Does this seem like it should work? Is there a more straight forward way?

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  • Test whether image loaded correctly with JavaScript

    - by johkar
    I have an image deployed on several application servers (green up arrow: uparrow.gif). I have an application server status page where I list out all the servers and with a corresponding image where the image's source is the uparrow.gif for that server. If the image does not load (server down) I would like to switch to a red down arrow (downarrow.gif). Is there a way to check whether an image loaded or not with straight JavaScript (no JS libraries etc)? I would imagine I would set an interval for it to continue checking if the user were on the page. Thanks.

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  • Guiding a Robot Through a Path

    - by Hamza Yerlikaya
    I have a field filled with obstacles, I know where they are located, and I know the robot's position. Using a path-finding algorithm, I calculate a path for the robot to follow. Now my problem is, I am guiding the robot from grid to grid but this creates a not-so-smooth motion. I start at A, turn the nose to point B, move straight until I reach point B, rinse and repeat until the final point is reached. So my question is: What kind of techniques are used for navigating in such an environment so that I get a smooth motion? The robot has two wheels and two motors. I change the direction of the motor by turning the motors in reverse. EDIT: I can vary the speed of the motors basically the robot is an arduino plus ardumoto, I can supply values between 0-255 to the motors on either direction.

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  • Ruby and Forking

    - by Cory
    Quick question about Ruby forking - I ran across a bit of forking code in Resque earlier that was sexy as hell but tripped me up for a few. I'm hoping for someone to give me a little more detail about what's going on here. Specifically - it would appear that forking spawns a child (expected) and kicks it straight into the 'else' side of my condition (less expected. Is that expected behavior? A Ruby idiom? My IRB hack here: def fork return true if @cant_fork begin if Kernel.respond_to?(:fork) Kernel.fork else raise NotImplementedError end rescue NotImplementedError @cant_fork = true nil end end def do_something puts "Starting do_something" if foo = fork puts "we are forking from #{Process.pid}" Process.wait else puts "no need to fork, let's get to work: #{Process.pid} under #{Process.ppid}" puts "doing it" end end do_something

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  • Math for a geodesic sphere

    - by Marcelo Cantos
    I'm trying to create a very specific geodesic tessellation, but I can't find anything online about it. It is normal to subdivide the triangles of an icosahedron into triangle patches and project them onto the sphere. However, I noticed an animated GIF on the Wikipedia entry for Geodesic Domes that appears not to follow this scheme. Geodesic spheres generally comprise a mixture of mostly hexagonal triangle patches, with pentagonal patches forming at the vertices of the original icosahedron; in most cases, these pentagons are linked together; that is, following a straight edge from the center of one pentagon leads to the center of another pentagon. In the Wikipedia animation, however, the edge from the center of one pentagon doesn't appear to intersect the center of an adjacent pentagons; instead it intersects the side of the other pentagon. Hopefully the drawing below makes this clear: Where can I go to learn about the math behind this particular geometry? Ideally, I'd like to know of an algorithm for generating such tessellations.

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  • Charging for the creation of a website [closed]

    - by mattgcon
    I am not sure if this can be asked here, but you all are very reliable and trustworthy in my eyes and well straight to the point, so I am going to ask. I am a professional programmer and web designer for UCLA (do not set prices) and I have an old colleage that needs a website designed for his new company. He wants his website to resemble the LDH Energy website, layout colors and the flash movies (no image replication or verbiage, all that will be his) and he has one idea of a price and I have another. Can anyone go and look at that website and let me know their opinion of what to charge for his website? thank you matthew

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  • Ruby Rack: startup and teardown operations (Tokyo Cabinet connection)

    - by clint.tseng
    I have built a pretty simple REST service in Sinatra, on Rack. It's backed by 3 Tokyo Cabinet/Table datastores, which have connections that need to be opened and closed. I have two model classes written in straight Ruby that currently simply connect, get or put what they need, and then disconnect. Obviously, this isn't going to work long-term. I also have some Rack middleware like Warden that rely on these model classes. What's the best way to manage opening and closing the connections? Rack doesn't provide startup/shutdown hooks as I'm aware. I thought about inserting a piece of middleware that provides reference to the TC/TT object in env, but then I'd have to pipe that through Sinatra to the models, which doesn't seem efficient either; and that would only get be a per-request connection to TC. I'd imagine that per-server-instance-lifecycle would be a more appropriate lifespan. Thanks!

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  • Nullables? Detecting them

    - by Aren B
    Ok, im still a bit new to using nullable types. I'm writing a reflecting object walker for a project of mine, im getting to the point where im setting the value of a reflected property with the value i've retrieved from a reflected property. The value i've retrieved is still in object form, and it dawned on me, since i want my object walker to return null when it can't find something, (I thought about throwing an exception, but i want this to soft-fail when something's wrong). Anyway, some of the values im setting/getting are decimal bool etc... so it dawned on me that i should just NOT set a non-nullable value, but I realized I straight up don't know how to tell decimal from decimal? Is it enough to key on if the Type of the property im setting is inherited from ValueType?

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  • Good piece of software that can manage the creation of complex web forms, including reporting, etc?

    - by Callum
    I have some clients who are requesting for some of their reasonably complex paper-based forms to be converted in to web forms. There's straight Q&A text input stuff, there's questions based around checkboxes, radio boxes, select boxes, maybe the occasional attached image, there's data that has to be entered in a tabular fashion, etc. I am deciding whether I should build a "platform" with properly normalised tables to store all types of form data. But before that, I thought I had better check and see if there is anything like that already on the market. I am looking for a product that can: * Easily create web forms of all types * Store all data in a database * Extensive reporting capability I have had a bit of a look around but there's not a whole lot I can see. Does anyone have any suggestions? Thanks.

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  • How do I create a shortcut to CMD.EXE that asks for elevation using INNO Setup?

    - by Maltrap
    Hi, using INNO Setup I currently have the following entry under the [ICONS] section: Name: "{group}\My App\My App - Command Prompt"; Filename: "cmd.exe"; WorkingDir: "{app}" This shortcut launches a command prompt straight into my application's folder. Unfortunately it isn't launched as elevated which means the commands the user runs from there doesn't have appropriate rights. Using INNO Setup, how can I create a shortcut to CMD.exe (in a specific folder) that requires elevation? Doing this for other applications can be done via a manifest file. My question is, how do I use it using INNO, and if I can't, what are my alternatives?

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  • Is strftime (hour) showing wrong time?

    - by ander163
    I'm using this line to get the beginning time of the first day of the month. t = Time.now.to_date.beginning_of_month.beginning_of_day When i display this using t.strftime("%A %b %e @ %l:%m %p") it shows: Monday Feb 1 @ 12:02 AM The hour is always 12 (instead of 00), and more wierd the minute changes to match the month in integers. For the February date, it shows 12:02 AM I use .prior_month and .next_month on the variable to move forward or backwards in time. So when I move to June, this would display as Tuesday June 1 @ 12:06 AM But when I just show the value of "t" using a straight t.to_s, I get this time of 00:00:00, which is what I expect: Mon Feb 01 00:00:00 -0700 2010 A similar error occurs using end_of_day, but the hour is always 11 PM and the minute is the same integer value that matches the month in integers, i.e the time is 11:06 PM in June, 11:02 PM in February. Qurky? Admittedly a noob to Rails. Thanks for any comments or explanations.

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  • Potential for SQL injection here?

    - by Matt Greer
    This may be a really dumb question but I figure why not... I am using RIA Services with Entity Framework as the back end. I have some places in my app where I accept user input and directly ask RIA Services (and in turn EF and in turn my database) questions using their data. Do any of these layers help prevent security issues or should I scrub my data myself? For example, whenever a new user registers with the app, I call this method: [Query] public IEnumerable<EmailVerificationResult> VerifyUserWithEmailToken(string token) { using (UserService userService = new UserService()) { // token came straight from the user, am I in trouble here passing it directly into // my DomainService, should I verify the data here (or in UserService)? User user = userService.GetUserByEmailVerificationToken(token); ... } } (and whether I should be rolling my own user verification system is another issue altogether, we are in the process of adopting MS's membership framework. I'm more interested in sql injection and RIA services in general)

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  • In search of opinions on web based version control systems

    - by tom smith
    Hi. Researching various open source, web-based document management/version control systems. I've checked google/questions here, etc... I'm looking for a lightweight web-based (apache) document mgmt/version control app that runs on top of SVN. I need to have the ability to: have multiple users checkin/checkout have a workflow (when userA checks the file in, and finishes the app passes it to the next person, etc... the app needs to allow me to have a structure where the files can be moved as a group. the files will be changed on a monthly basis app needs to have a access/premission control system. some people can see certain files, and perform certain actions on the files I imagine that I'm going to have 40-50 people dealing with the different files. I imagine that I'm going to have 2000-3000 files that have to be massaged. I'd prefer that the app be php based if possible, as opposed to a straight java app. Thanks

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  • knockout bind text label to dropdown value selected option text

    - by Adam Levitt
    Is there a simple way to bind the textbox of a div to change based on the text value of the selected option in a dropdown on the same page? <div data-bind="text: dropdownValue"></div> <select> <option value="1">Value1</option> <option value="2">Value2</option> </select> Please note, I don't want to put the values into the select element using javascript. I'd like to bind to the value straight from the HTML. I can also include jQuery to make it work.

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  • How to retrieve a style's value in javascript?

    - by stan
    I am looking for a way to retrieve the style from an element that has a style set upon it by the style tag. <style> #box {width: 100px;} </style> In the body <div id="box"></div> I'm looking for straight javascript without the use of libraries. I tried the following, but keep receiving blanks: alert (document.getElementById("box").style.width); alert (document.getElementById("box").style.getPropertyValue("width")); I noticed that I'm only able to use the above if I have set the style using javascript, but unable to with the style tags.

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  • Getting a sorted distinct list from mySQL

    - by Stomped
    Goal I'l like to get a list of unique FID's ordered by the the one which has most recently been changed. In this sample table it should return FIDs in the order of 150, 194, 122 Example Data ID FID changeDate ---------------------------------------------- 1 194 2010-04-01 2 122 2010-04-02 3 194 2010-04-03 4 150 2010-04-04 My Attempt I thought distinct and order by would do the trick. I initially tried: SELECT distinct `FID` FROM `tblHistory` WHERE 1 ORDER BY changeDate desc # Returns 150, 122, 194 using GROUP BY has the same result. I'm just barely a SQL amateur, and I'm a bit hung up. What seems to be happening is the aggregating functions find the first occurrence of each and then perform the sort. Is there a way I can get the result I want straight from mySQL or do I have to grab all the data and then sort it in the PHP?

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  • How do you make javascript code execute *in order*

    - by Ed
    Okay, so I appreciate that Javascript is not C# or PHP, but I keep coming back to an issue in Javascript - not with JS itself but my use of it. I have a function: function updateStatuses(){ showLoader() //show the 'loader.gif' in the UI updateStatus('cron1'); //performs an ajax request to get the status of something updateStatus('cron2'); updateStatus('cron3'); updateStatus('cronEmail'); updateStatus('cronHourly'); updateStatus('cronDaily'); hideLoader(); //hide the 'loader.gif' in the UI } Thing is, owing to Javascript's burning desire to jump ahead in the code, the loader never appears because the 'hideLoader' function runs straight after. How can I fix this? Or in other words, how can I make a javascript function execute in the order I write it on the page...

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  • Using a table-alias in Kohana queries?

    - by Aristotle
    I'm trying to run a simple query with $this->db in Kohana, but am running into some syntax issues when I try to use an alias for a table within my query: $result = $this->db ->select("ci.chapter_id, ci.book_id, ci.chapter_heading, ci.chapter_number") ->from("chapter_info ci") ->where(array("ci.chapter_number" => $chapter, "ci.book_id" => $book)) ->get(); It seems to me that this should work just fine. I'm stating that "chapter_info" ought to be known as "ci," yet this isn't taking for some reason. The error is pretty straight-forward: There was an SQL error: Table 'gb_data.chapter_info ci' doesn't exist - SELECT `ci`.`chapter_id`, `ci`.`book_id`, `ci`.`chapter_heading`, `ci`.`chapter_number` FROM (`chapter_info ci`) WHERE `ci`.`chapter_number` = 1 AND `ci`.`book_id` = 1 If I use the full table name, rather than an alias, I get the expected results without error. This requires me to write much more verbose queries, which isn't ideal. Is there some way to use shorter names for tables within Kohana's query-builder?

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  • Using CGRectIntersectsRect for collision detection

    - by user309030
    Hi guys, I've got a long rectangular image which is rotated at different kind of angles. However the frame of the rectangular image does not rotate along with the image and instead, the rotation causes the frame to to become larger to fit the rotated image. So when I used CGRectIntersectsRect, the collision detection is totally off because the other image colliding with the rectangular image will collide before it even reaches the visible area of the rect image. In case you don't really know what I'm talking about, have a look at the ascii drawing: normal rectangular image frame, O - pixels, |, – - frame |----------| |OOOOOOOOOO| |----------| after rotation |----------| |O | | O | | O | | O | | O | | O | | O | | O | | O | |----------| I've read through some of the collision articles but all of them are talking about collision with a normal straight rectangle and what I really want is collision with a slanted image, preferably pixel collision detection. TIA for any suggestions made.

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  • Marshal a C++ class to C#

    - by Adam Haile
    I need to access code in a native C++ DLL in some C# code but am having issues figuring out the marshaling. I've done this before with code that was straight C, but seem to have found that it's not directly possible with C++ classes. Made even more complicated by the fact that many of the classes contain virtual or inline functions. I even tried passing the headers through the PInvoke Interop Assistant, but it would choke on just about everything and not really no what to do... I'm guessing because it's not really supported. So how, if at all possible, can you use a native C++ class DLL from .NET code. If I have to use some intermediary (CLR C++?) that's fine.

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  • Handling Custom Protocols

    - by nomad311
    I'm looking to respond to an event from a web browser, hopefully any web browser. I'm working solely on windows and I came to the conclusion a custom protocol (I.E. myprot://collection/of/strings) is the best approach here (any objections?). But, handling an instance of this protocol seems to be a little less straight-forward. All I need is that collection of strings auto-magically passed to my already running application! (the app will only respond to these links while in a specific waiting state) So answer me this, if you can, Whats the 'popular' method of handling them or better yet Whats the 'best' (subjective - I know) way to do it? Although your answers don't need to be specific to my language, I am using Delphi for development. Thanks!

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  • Easiest way of checking if a string consists of unique characters?

    - by serg555
    I need to check in Java if a word consists of unique letters (case insensitive). As straight solution is boring, I came up with: For every char in a string check if indexOf(char) == lastIndexOf(char). Add all chars to HashSet and check if set size == string length. Convert a string to a char array, sort it alphabetically, loop through array elements and check if c[i] == c[i+1]. Currently I like #2 the most, seems like the easiest way. Any other interesting solutions?

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