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• PHP: How To call Standard Library Functions

  - by Andi

  Hi, I'm starting with PHP for dynamic web pages. I have some libaries written in ANSI C for getting/setting parameters and other proprietary stuff. I wonder, is there a simple solution to use a wrapper inside PHP to call this funtions? Is there a already existing class/library? What would be the best practice to do this on my own? I don't want do make calls to external applications and use stdin/stdout! Is there a simple example available? I don't want to dig through the Zend documentation for now, I only need a feeling for the complexity. Thanks, kind regards, Andi

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• ASP.NET: CSS friendly calendar control

  - by pbz

  I'm using the built-in Calendar control. It works, but in a few places the way the HTML is rendered is broken or not CSS-friendly and unfortunately cannot be changed (it's hard coded). I was hoping they would fix this in .NET 4.0, but as far as I can tell the Calendar control hasn't been changed at all. Also, as far as I know, there's no CSS adapter for the Calendar control. So, I would need a control that would: Allow me to customize the content of each cell (like OnDayRender works) Allow me to assign CSS classes to any HTML it may render Not render anything automatically that cannot be turned off, except layout code No auto-postback or auto-JS code (I can handle these by hand using simple links or custom JS calls) Basically a simple calendar view control that would give me full rendering control. What would you recommend? Thanks!

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• C functions invoked as threads - Linux userland program

  - by Einar

  I'm writing a linux daemon in C which gets values from an ADC by SPI interface (ioctl). The SPI (spidev - userland) seems to be a bit unstable and freezes the daemon at random times. I need to have some better control of the calls to the functions getting the values, and I was thinking of making it as a thread which I could wait for to finish and get the return value and if it times out assume that it froze and kill it without this new thread taking down the daemon itself. Also I could do other things like resetting the ADC before restarting. Is this possible? Pseudo example of what I want to achieve: (function int get_adc_value(int adc_channel, float *value) ) pid = thread( get_adc_value(1,&value); //makes thread wait_until_finish(pid, timeout); //waits until function finishes/timesout if(timeout) kill pid, start over //if thread do not return in given time, kill it (it is frozen) else if return value sane, continue //if successful, handle return variable value and continue Thanks for any input on the matter, examples highly appreciated!

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• Android; Confused by views?

  - by javano

  I have created a class (InputControl) which extends the view of my main class (Main), and takes focus of the screen. I have a button on the main xml layout which calls control() and sets up my InputControl view, from there I capture user input. How can I return back to the xml layout from the InputControl view class? public class Main extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); InputControl = new InputControl(this); } //......SNIP! public void control(){ setContentView(InputControl); InputControl.requestFocus(); } } public class InputControl extends View implements OnTouchListener { public InputControl(Context context) { super(context); setFocusable(true); setFocusableInTouchMode(true); this.setOnTouchListener(this); } public boolean onTouch(View view, MotionEvent event) { //...I AM CAPTURING USER TOUCH EVENTS HERE } }

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• change view with onSensorChanged result

  - by tipu

  I have a view, set by setContentView(new CompassView(this)); I have the onDraw and update methods filled out. What I need to do with the view CompassView is update my view with the new data at the end of the call in the onSensorChanged method. The methods I have to fill out, I believe, are the surfaceChanged and surfaceCreated. They are normally using threads which takes care of the update and onDraw calls but I removed the thread because when the thread was enabled, in the infinite while loop I was never getting any azimuth value what so ever.

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• Refer to te current directory in a shell script

  - by One Two Three

  How do I refer to the current directory in a shell script So I have this script which calls another script in the same directory #! /bin/sh #Call the other script ./foo.sh # do something ... For this I got ./foo.sh: No such file or directory So I changed it to: #! /bin/sh #Call the other script foo.sh # do something ... But this would call the foo script which is, by default, in the PATH. This is not what I want. So the question is, what's the syntax of doing './` in a shell script?

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• How to cancel a web service call if it's not responding

  - by drizzle

  Hi, I have a web page (.aspx) that calls a third party web service to get some data. It usually takes couple of seconds to get the response back, and then the rest of the page will load. Occasionally the call gets stuck either due to the web service is down, or internet connection, etc., the page just hang there and will not load. My questions is: 1) Is there a way to abort/cancel the web service call after a set amount of time? 2) Is it even possible to verify the status of the web service before calling it? Thanks.

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• Save in Sessions to reduce database load

  - by Kovu

  at the moment I try to reduce the load on my database extremly, so I had a look in my website and think about - what database calls can I try to avoid. So is there a rule for that? Sould I save every information in a Session that is nearly never changed? e.g.: The User-Table is a 35-coloumn-table which I need so often in so different ways, that in the moment I got this user-object at nearly every PageLoad AND in the master-site-page-load (Settings, display the username for a welcome message, colors etc etc.). So is that good to avoid the database query here, save the User-Object in a Session and call it from the session - and of course destroy the session whereever the User-Object get changed (e.g. User change his settings)?

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• How to get JSON back from HTTP POST Request (to another domain)

  - by roman m

  I'm trying to use the API on a website, here's the part of the manual: Authenticated Sessions (taken from here) To create an authenticated session, you need to request an authToken from the '/auth' API resource. URL: http://stage.amee.com/auth (this is not my domain) Method: POST Request format: application/x-www-form-urlencoded Response format: application/xml, application/json Response code: 200 OK Response body: Details of the authenticated user, including API version. Extra data: "authToken" cookie and header, containing the authentication token that should be used for subsequent calls. Parameters: username / password Example Request POST /auth HTTP/1.1 Accept: application/xml Content-Type: application/x-www-form-urlencoded username=my_username&password=my_password Response HTTP/1.1 200 OK Set-Cookie: authToken=1KVARbypAjxLGViZ0Cg+UskZEHmqVkhx/Pm...; authToken: 1KVARbypAjxLGViZ0Cg+UskZEHmqVkhx/PmEvzkPGp...== Content-Type: application/xml; charset=UTF-8 QUESTION: How do I get that to work? I tried jQuery, but it seems to have problem with XSS. Actual code snippet would be greatly appreciated. p.s. All I was looking for was WebClient class in C#

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• Change panel "visible" property on MasterPage from Child pages

  - by Vitor Reis

  I want to show some panel with a label that is located on a MasterPage from inside it's child pages.. I already did the coding on the MasterPage: public class MyMaster : MasterPage { public void ShowPanel(string pMessage) { labelInside.Text = pMessage; myPanel.visible = true; } } Then I make the calls from child pages: public void ShowPanel(string pMessage) { MyMaster masterPage = this.Master as MyMaster; masterPage.ShowPanel(pMessage); } This "works" ok, but it won't show nothing, since I need the page to be "refreshed" in an "ajax-way" like an UpdatePanel, which I can't use because the Trigger is in another page, right? I really need this to work.. even if you have another completely different way to do this, I would appreciate.

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• XMLHttpRequest inside an oject: how to keep the refrence to "this"

  - by Julien

  I make some Ajax calls from inside a javascript object.: myObject.prototye = { ajax: function() { this.foo = 1; var req = new XMLHttpRequest(); req.open('GET', url, true); req.onreadystatechange = function (aEvt) { if (req.readyState == 4) { if(req.status == 200) { alert(this.foo); // reference to this is lost } } } }; Inside the onreadystatechange function, this does not refer to the main obecjt anymore, so I don't have access to this.foo. Ho can I keep the reference to the main object inside XMLHttpRequest events?

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• What tech stack/platform to use for a project?

  - by danny z

  Hey guys, This is a bit of a weird meta-programming question, but I've realized that my new project doesn't need a full MVC framework, and being a rails guy, I'm not sure what to use now. To give you a gist of the necessary functionality; this website will display static pages, but users will be able to log in and 'edit their current plans'. All purchasing and credit card editing is being handled by a recurring payment subscriber, I just need a page to edit their current plan. All of that will be done through (dynamic) XML API calls, so no database is necessary. Should I stick with my typical rails/nginx stack, or is there something I could use that would lighten the load, since I don't need the Rails heft. I'm familiar with python and PHP but would prefer not to go that route. Is Sinatra a good choice here? tl;dr: What's a good way to quickly serve mostly static pages, preferably in Ruby, with some pages requiring dynamic XML rendering?

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• Structuring System Architecture in a Flex Web Application on a Budget (w/o Java)

  - by phwd

  I started a project a while back using the following architecture from Adobe Developer Article talking about Creating marketing platforms in Flex. I did my first set of coding locally forgetting that my server did not handle Tomcat. So I said okay, and cut some corners and then some other limitation came up and I cut some more corners. Eventually for a good week or two, it was trying to get the project working with making the ends meet. Layers started to merge. In the end I used a PureMVC (Presentation/Client) - ZendAMF (Communication) - MySql (Data) Layout. It worked but I never felt as though I had some layer just to take care of all the SQL calls to the data.It just felt hacked together So should I keep the above setup and just start from the presentation layer and move downwards like they said in the article or is there a better layering (based on a hosting plan that does not handle Java) I could accomplish ? NOTE: I would just ask the adobe guys but they barely reply on their site. Thanks !

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• Jquery - Forms Plugin, Dynamic Tabs

  - by user177874

  Hi guys, I am using JQuery UI tabs. When i create a tab using the "$("#" + target).tabs('add', url, title);" method it opens a tab and calls an ajax form correctly.. Now the problem exists when i open an identical tab containing the identical form. When the form is submitted using the forms plugin, things mess up. I am presuming this is due to multiple areas having the same div id and so the form plugin does not know which to update.. Is there a work around for this at all ??

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• Daily/Weekly/Monthly Record Count Search via StoredProcedure

  - by user270960

  Using MS SQL Server.I have made a Stored Procedure naming "SP_Get_CallsLogged". I have a table named "TRN_Call", and it has one column named "CallTime" which is a DateTime. I have a web-page in my application where the User enters:- 1.StartDate (DateTime) 2.EndDate (DateTime) 3.Period(Daily/Weekly/Monthly) (varchar) (from DropDownList) I want to get the Record Count of those calls in my table *TRN_Call* on the basis of the specified Period(Daily/Weekly/Monthly) selected by user in the DropDownList. e.g. StartDate ='1/18/2010 11:10:46 AM' EndDate ='1/25/2010 01:10:46 AM' Period =Daily So the record count between these above mentioned dates(StartDate+EndDate) should come in a manner so that I can refer to those counts separately i.e. the following:- Date 1/18/2010 Records Found 5 Date 1/19/2010 Records Found 50 Date 1/20/2010 Records Found 15 Date 1/21/2010 Records Found 32 Date 1/22/2010 Records Found 12 Date 1/23/2010 Records Found 15 Date 1/24/2010 Records Found 17 Date 1/25/2010 Records Found 32 and send those Counts to the Web Application so that these counts could be listed then in the Crystal Reports.

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• Authorization in a more purely OOP style...

  - by noblethrasher

  I've never seen this done but I had an idea of doing authorization in a more purely OO way. For each method that requires authorization we associate a delegate. During initialization of the class we wire up the delegates so that they point to the appropriate method (based on the user's rights). For example: class User { private deleteMemberDelegate deleteMember; public StatusMessage DeleteMember(Member member) { if(deleteMember != null) { deleteMember(member); } } //other methods defined similarly... User(string name, string password) //cstor. { //wire up delegates based on user's rights. //Thus we handle authentication and authorization in the same method. } } This way the client code never has to explictly check whether or not a user is in a role, it just calls the method. Of course each method should return a status message so that we know if and why it failed. Thoughts?

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• Could Grand Central Dispatch (`libdispatch`) ever be made available on Windows?

  - by elliottcable

  I’m looking into multithreading, and GCD seems like a much better option than manually writing a solution using pthread.h and pthreads-win32. However, although it looks like libdispatch is either working on, or soon going to be working on, most newer POSIX-compatible systems… I have to ask, what about Windows? What are the chances of libdispatch being ported to Windows? What are the barriers preventing that from happening? If it came down to it, what would I need to do to preform that portage? Edit: Some things I already know, to get the discussion started: We need a blocks-compatible compiler that will compile on Windows, no? Will PLBlocks handle that? Can we use the LLVM blocks runtime? Can’t we replace all the pthread.h dependencies in userspace libdispatch with APR calls, for portability? Or, alternatively, use pthreads-win32 I suppose…

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• CGI, python, and setgid

  - by user331398

  I'm running a compiled python cgi script (using cxfreeze) in Apache. The script, among other things, calls os.setuid(some_uid) os.setgid(some_gid) Obviously some_uid/gid are legal and I set the sticky bit for both user and group, and verified it is indeed set. However on every call i get an error os.setgid(int(self.gid)) OSError: [Errno 1] Operation not permitted As you may notice, setuid() is successful, setgid is not. Which is very weird, at least for me, though I admit I have little experience with permissions in Linux. Any thoughts/ideas are welcome. I'm using apache 2.2.15, python 2.6.5, RHEL 5.4 (kernel 2.6.18) Thank you

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• Java multiline string

  - by skiphoppy

  Coming from Perl, I sure am missing the "here-document" means of creating a multi-line string in source code: $string = <<"EOF" # create a three line string text text text EOF In Java I have to have cumbersome quotes and plus signs on every line as I concatenate my multiline string from scratch. What are some better alternatives? Define my string in a properties file? Edit: Two answers say StringBuilder.append() is preferable to the plus notation. Could anyone elaborate as to why they think so? It doesn't look more preferable to me at all. I'm looking for away around the fact that multiline strings are not a first-class language construct, which means I definitely don't want to replace a first-class language construct (string concatenation with plus) with method calls. Edit: To clarify my question further, I'm not concerned about performance at all. I'm concerned about maintainability and design issues.

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• Where to open sessions in a Spring/Hibernate stack?

  - by CaptainAwesomePants

  I'm trying to figure out a good design for a Spring/Hibernate app. When creating such an app, it appears like there are a handful of major decisions. The first major decision seems to be where to put the session/transaction boundary. It seems like I have 3 major choices: as a filter before controllers are even invoked, immediately below the controllers at the service call level, and stuffed way below the business level in repository calls. It seems to me like the right call is the middle path, but I'm not sure. I don't want my transactions open too long, but at the same time, I don't want to constantly worry about detached objects and lazy loading in the business logic. Still, there are some downsides. For instance, it makes it hard for the business logic to make a remote call without holding up a transaction for a few seconds. I wonder if there's a better way?

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• Linq to Entities performance within ASP.NET Development Server

  - by tster

  I've been evaluating linq to entities and linq to SQL for a project. Obviously each has its own advantages and disadvantages which have been discussed plenty of times here. However, One thing I am seeing with L2E is kind of odd. Using L2S, when using the ASP.NET Development Server, the performance is a little slower for my web service calls. I'm looking at 300ms vs. 250 ms. However, when using L2E, when using ASP.NET Dev Server, the performance is awful. I'm talking 1,250 ms vs. 220 ms. I know I should probably just use local IIS for development, but I'm curious if anyone else has seen this, or knows what is causing it.

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• MySQL Rank Not Matching High Score in Table

  - by boddie

  While making a game the MySQL call to get the top 10 is as follows: SELECT username, score FROM userinfo ORDER BY score DESC LIMIT 10 This seems to work decently enough, but when paired with a call to get a individual player's rank the numbers may be different if the player has a tied score with other players. The call to get the players rank is as follows: SELECT (SELECT COUNT(*) FROM userinfo ui WHERE (ui.score, ui.username) >= (uo.score, uo.username)) AS rank FROM userinfo uo WHERE username='boddie'; Example results from first call: +------------+-------+ | username | score | +------------+-------+ | admin | 4878 | | test3 | 3456 | | char | 785 | | test2 | 456 | | test1 | 253 | | test4 | 78 | | test7 | 0 | | boddie | 0 | | Lz | 0 | | char1 | 0 | +------------+-------+ Example results from second call +------+ | rank | +------+ | 10 | +------+ As can be seen, the first call ranks the player at number 8 on the list, but the second call puts him at number 10. What changes or what can I do to make these calls give matching results? Thank you in advance for any help!

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• [C#] What does MissingManifestResourceException mean and how to fix it?

  - by Timwi

  The situation: I have a class library, called RT.Servers, containing a few resources (of type byte[], but I don't think that's important) The same class library contains a method which returns one of those resources I have a simple program (with a reference to that library) that only calls that single method I get a MissingManifestResourceException with the following message: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Servers.Resources.resources" was correctly embedded or linked into assembly "RT.Servers" at compile time, or that all the satellite assemblies required are loadable and fully signed. I have never played around with cultures, or with assembly signing, so I don't know what's going on here. Also, this works in another project which uses the same library. Any ideas? Edit: I checked the .resx file; all the resources are marked as "Culture=neutral" there. Also, I noticed a similar question and went to check the namespace in Resources.Designer.cs, but it's correct (it's "RT.Servers").

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• how to implement unitofwork pattern when using subsonic 2.1(Repository pattern) ?

  - by ROHITH

  I am using subsonic repository pattern(2.1) for asp.net mvc application.In my application,there are many repositories like categoryRepository,Blogrepository etc.Inside each of this repository i am calling subsonic's DB.Select().From()...ExecuteReader() and then loading domain objects from those reader. In the controller action i make multiple calls from these repositories for e.g. List<IBlog> blogs=_blogRepository.GetHottestBlogs(); List<ICategory> categories=_categoryRepository.GetAll(); do i have to implement any unitofwork pattern for this ?.My doubt is that how subsonic performs each operation DB.Update/Insert/Select .Is a TransactionScope is enough for batch update or do i have to use SharedDbConnectionScope to get better performance?

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• Graph - strongly connected components

  - by HardCoder1986

  Hello! Is there any fast way to determine the size of the largest strongly connected component in a graph? I mean, like, the obvious approach would mean determining every SCC (could be done using two DFS calls, I suppose) and then looping through them and taking the maximum. I'm pretty sure there has to be some better approach if I only need to have the size of that component and only the largest one, but I can't think of a good solution. Any ideas? Thanks.

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