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  • Sanity Check: change event not firing first time using keyboard

    - by macca1
    I've done a good amount of research on this and found a bunch of reported problems and solutions but the general consensus seems that all change problems in IE6 were fixed in jQuery 1.4.2. I'm having an issue where a change event is not firing in jQuery 1.4.2, but it did fire successfully in jQuery 1.3.2. This is in IE6. I'm about to submit a bug for this, but for my sanity I wanted to post it here first to see if there's something dumb I'm missing. I don't understand why this is working this way... <HTML> <HEAD> <TITLE>jQuery 1.4.2 Problem </TITLE> <script src="jquery-1.4.2.min.js" type="text/javascript"></script> <script> $(document).ready( function() { $("#firstBox").change(function() { alert("CHANGE"); }); // ONLOAD of document autofocus into the first element... $("form").find(":input:visible:first").focus() }); </script> </HEAD> <BODY> <form> <select id="firstBox"> <option value="" selected="selected">--</option> <option value="1">One</option> <option value="2">Two</option> </select> <br><br> <input size="10" id="secondBox"> </form> </BODY> </HTML> Simple enough, right? Onload of the page, give the first element focus. Onchange of the first element, alert. If you use the mouse, it works as expected. The page loads, the focus is in the drop down, you change the option, you get the alert. The problem is if you use the keyboard. The page loads, the focus is in the drop down, you press the down arrow. The option changes. Tab off the field, no alert. Weird. To make it even weirder, if you tab back into the field and change it again (all using the keyboard), the change event DOES fire after tab out this time. Any ideas?

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  • Why SQL2008 debugger would NOT step into a certain child stored procedure

    - by John Galt
    I'm encountering differences in T-SQL with SQL2008 (vs. SQL2000) that are leading me to dead-ends. I've verified that the technique of sharing #TEMP tables between a caller which CREATES the #TEMP and the child sProc which references it remain valid in SQL2008 See recent SO question. My core problem remains a critical "child" stored procedure that works fine in SQL2000 but fails in SQL2008 (i.e. a FROM clause in the child sProc is coded as: SELECT * FROM #AREAS A) despite #AREAS being created by the calling parent. Rather than post snippets of the code now, here is another symptom that may help you suggest something. I fired up the new debugger in SQL Mgmt Studio: EXEC dbo.AMS1 @S1='06',@C1='037',@StartDate='01/01/2008',@EndDate='07/31/2008',@Type=1,@ACReq = 1,@Output = 0,@NumofLines = 30,@SourceTable = 'P',@LoanPurposeCatg='P' This is a very large sProc and the key snippet that is weird is the following: **create table #Areas ( State char(2) , County char(3) , ZipCode char(5) NULL , CityName varchar(28) NULL , PData varchar(3) NULL , RData varchar(3) NULL , SMSA_CD varchar(10) NULL , TypeCounty varchar(50) , StateAbbr char(2) ) EXECUTE dbo.AMS_I_GetAreasV5 -- this child populates #Areas @SMSA = @SMSA , @S1 = @S1 , @C1 = @C1 , @Z1 = @Z1 , @SourceTable = @SourceTable , @CustomID = @CustomID , @UserName = @UserName , @CityName = @CityName , @Debug=0 EXECUTE dbo.AMS_I_GetAreas_FixAC -- this child cannot reference #Areas @StartDate = @StartDate , @EndDate = @EndDate , @SMSA_CD = @SMSA_CD , @S1 = @S1 , @C1 = @C1 , @Z1 = @Z1 , @CityName = @CityName , @CustomID = @CustomID , @Debug=0 -- continuation of the parent sProc** I can step through the execution of the parent stored procedure. When I get to the first child sproc above, I can either STEP INTO dbo.AMS_I_GetAreasV5 or STEP OVER its execution. When I arrive at the invocation of the 2nd child sProc - dbo.AMS_I_GetAreas_FixAC - I try to STEP INTO it (because that is where the problem statement is) and STEP INTO is ignored (i.e. treated like STEP OVER instead; yet I KNOW I pressed F11 not F10). It WAS executed however, because when control is returned to the statement after the EXECUTE, I click Continue to finish execution and the results windows shows the errors in the dbo.AMS_I_GetAreas_FixAC (i.e. the 2nd child) stored procedure. Is there a way to "pre-load" an sProc with the goal of setting a breakpoint on its entry so that I can pursue execution inside it? In summary, I wonder if the inability to step into a given child sproc might be related to the same inability of this particular child to reference a #temp created by its parent (caller).

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  • Memory management with Objective-C Distributed Objects: my temporary instances live forever!

    - by jkp
    I'm playing with Objective-C Distributed Objects and I'm having some problems understanding how memory management works under the system. The example given below illustrates my problem: Protocol.h #import <Foundation/Foundation.h> @protocol DOServer - (byref id)createTarget; @end Server.m #import <Foundation/Foundation.h> #import "Protocol.h" @interface DOTarget : NSObject @end @interface DOServer : NSObject < DOServer > @end @implementation DOTarget - (id)init { if ((self = [super init])) { NSLog(@"Target created"); } return self; } - (void)dealloc { NSLog(@"Target destroyed"); [super dealloc]; } @end @implementation DOServer - (byref id)createTarget { return [[[DOTarget alloc] init] autorelease]; } @end int main() { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; DOServer *server = [[DOServer alloc] init]; NSConnection *connection = [[NSConnection new] autorelease]; [connection setRootObject:server]; if ([connection registerName:@"test-server"] == NO) { NSLog(@"Failed to vend server object"); } else [[NSRunLoop currentRunLoop] run]; [pool drain]; return 0; } Client.m #import <Foundation/Foundation.h> #import "Protocol.h" int main() { unsigned i = 0; for (; i < 3; i ++) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; id server = [NSConnection rootProxyForConnectionWithRegisteredName:@"test-server" host:nil]; [server setProtocolForProxy:@protocol(DOServer)]; NSLog(@"Created target: %@", [server createTarget]); [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0]]; [pool drain]; } return 0; } The issue is that any remote objects created by the root proxy are not released when their proxy counterparts in the client go out of scope. According to the documentation: When an object’s remote proxy is deallocated, a message is sent back to the receiver to notify it that the local object is no longer shared over the connection. I would therefore expect that as each DOTarget goes out of scope (each time around the loop) it's remote counterpart would be dellocated, since there is no other reference to it being held on the remote side of the connection. In reality this does not happen: the temporary objects are only deallocate when the client application quits, or more accurately, when the connection is invalidated. I can force the temporary objects on the remote side to be deallocated by explicitly invalidating the NSConnection object I'm using each time around the loop and creating a new one but somehow this just feels wrong. Is this the correct behaviour from DO? Should all temporary objects live as long as the connection that created them? Are connections therefore to be treated as temporary objects which should be opened and closed with each series of requests against the server? Any insights would be appreciated.

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  • Cached ObjectDataSource not firing Select Event even Cache Dependecy Removed

    - by John Polvora
    I have the following scenario. A Page with a DetailsView binded to an ObjectDatasource with cache-enabled. The SelectMethod is assigned at Page_Load event, depending on my User Level Logic. After assigned the selectMethod and Parameters for the ODS, if Cache not exists, then ODS will be cached the first time. The next time, the cache will be applied to the ODS and the select event don't need to be fired since the dataresult is cached. The problem is, the ODS Cache works fine, but I have a Refresh button to clear the cache and rebind the DetailsView. Am I doing correctly ? Below is my code. <asp:DetailsView ID="DetailsView1" runat="server" DataSourceID="ObjectDataSource_Summary" EnableModelValidation="True" EnableViewState="False" ForeColor="#333333" GridLines="None"> </asp:DetailsView> <asp:ObjectDataSource ID="ObjectDataSource_Summary" runat="server" SelectMethod="" TypeName="BL.BusinessLogic" EnableCaching="true"> <SelectParameters> <asp:Parameter Name="idCompany" Type="String" /> <SelectParameters> </asp:ObjectDataSource> <asp:ImageButton ID="ImageButton_Refresh" runat="server" OnClick="RefreshClick" ImageUrl="~/img/refresh.png" /> And here is the code behind public partial class Index : Page { protected void Page_Load(object sender, EventArgs e) { ObjectDataSource_Summary.SelectMethod = ""; ObjectDataSource_Summary.SelectParameters[0].DefaultValue = ""; switch (this._loginData.UserLevel) //this is a struct I use for control permissions e pages behaviour { case OperNivel.SysAdmin: case OperNivel.SysOperator: { ObjectDataSource_Summary.SelectMethod = "SystemSummary"; ObjectDataSource_Summary.SelectParameters[0].DefaultValue = "0"; break; } case OperNivel.CompanyAdmin: case OperNivel.CompanyOperator: { ObjectDataSource_Summary.SelectMethod = "CompanySummary"; ObjectDataSource_Summary.SelectParameters[0].DefaultValue = this._loginData.UserLevel.ToString(); break; } default: break; } } protected void Page_LoadComplete(object sender, EventArgs e) { if (Cache[ObjectDataSource_Summary.CacheKeyDependency] == null) { this._loginData.LoginDatetime = DateTime.Now; Session["loginData"] = _loginData; Cache[ObjectDataSource_Summary.CacheKeyDependency] = _loginData; DetailsView1.DataBind(); } } protected void RefreshClick(object sender, ImageClickEventArgs e) { Cache.Remove(ObjectDataSource_Summary.CacheKeyDependency); } } Can anyone help me? The Select() Event of the ObjectDasource is not firing even I Remove the CacheKey Dependency

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  • Create Menu with css and li elements compatible for all browsers.

    - by Cesar Lopez
    Hi all, I am trying to create a simple menu using li elements, but it only works on IE7, in FF and Chrome, the alignment get weird. Also the :hover and :Active only works on IE7. Could anybody give me a hit on this? I would really appreciate it. CSS: #heading{ width: 700px; height:auto; margin: 0 auto; background-color:#FFFFFF; margin-top:5px; margin-bottom:5px; display:block; } #imglogo{ float:left; } #barDescription{ float:right; } #navigation{ text-align: right; margin-top: 70px; } #navigation li{ float: right; display: block; text-align: center; list-style-type: none; } #navigation li a{ color:#A08019; background-image: url('Images/Menu1.png'); background-repeat:repeat-x; background-position: center center; text-decoration:none; font-weight:bold; display: block; height:25px; vertical-align:middle; padding-right:10px; padding-left:10px; } HTML: <div id="heading" > <div id="imglogo"> <img id="logo" src="Images/logo.png" alt="logo" /> </div> <div id="barDescription"> <h4>Especialidad en tapas,vinos y menus</h4> <h5>Restaurante de cocina creativa tradicional. Vinos y tapas</h5> </div> <ul id="navigation"> <li><a href="#">Contacto</a></li> <li><a href="#">Ubicacion</a></li> <li><a href="#">Reservas</a></li> <li><a href="#">Menus</a></li> <li><a href="#">Local</a></li> </ul> </div>

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  • Reliable session faulting for unknown reason

    - by Scarfman007
    I am trying to achieve the following - one client-side proxy instance (kept open) accessed by multiple threads using a reliable session. What I have managed so far is to have either A) a reliable session with a client-side proxy which is created and disposed per call or B) what I aim for, but without a reliable session. When I enable reliable sessions on my binding however, the following behaviour is exhibited: Client-side Upon application startup everything appears to work fine until roughly 18 messages in to the WCF session. I firstly get the proxy.InnerChannel.Faulted event raised, then an exception is caught at the point where I am calling the method on the proxy. The exception is a System.TimeoutException, with message: "The request channel timed out while waiting for a reply after 00:00:59.9062512. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout." The inner exception has a similar message: "The request operation did not complete within the allotted timeout of 00:01:00. The time allotted to this operation may have been a portion of a longer timeout." With the method at the top of the inner stack trace being: System.ServiceModel.Channels.ReliableRequestSessionChannel.SyncRequest.WaitForReply(TimeSpan timeout) I then call proxy.Close followed by proxy.Abort (catching and ignoring exceptions). If I utilize the default settings (i.e. have simply <reliableSession/>), then calling proxy. Close results in another System.Timeout exception (although this time the allotted timeout is 00:00:00), however if I override the defaults as specified above no exception is thrown. Service-side Utilizing WCF tracing I get a System.ServiceModel.CommunicationException, with message: "The sequence has been terminated by the remote endpoint. The session has stopped waiting for a particular reply. Because of this the reliable session cannot continue. The reliable session was faulted." And a stack trace ending at: System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result) When remotely attaching to the server I get the same message, which occurs when code execution steps over the return statement of my service in the service call which causes the error. The puzzling thing to me is that the service is stable and runs with options A) or B) as decribed at the beginning of my post, and occurs after a varying number of messages (around 18). The former fact points to there being nothing wrong with the code (indeed I have checked that no exceptions are thrown), and the latter just serves to confuse me and is why I modified the settings on the reliable session binding. I am quite stuck on this. Can anyone suggest why the reliable session would fault in such a way?

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  • getline() sets failbit and skips last line

    - by Thanatos
    I'm using std::getline() to enumerate through the lines in a file, and it's mostly working. It's left me curious however - std::getline() is skipping the very last line in my file, but only if it's blank. Using this minimal example: #include <iostream> #include <string> int main() { std::string line; while(std::getline(std::cin, line)) std::cout << "Line: “" << line << "”\n"; return 0; } If I feed it this: Line A Line B Line C I get those lines back at me. But this: Line A Line B Line C [* line is present but blank, ie, the file end is: "...B\nLine C\n" *] (I unfortunately can't have a blank line in SO's little code box thing...) So, first file has three lines ( ["Line A", "Line B", "Line C"] ), second file has four ( ["Line A", "Line B", "Line C", ""] ) This to me seems wrong - I have a four line file, and enumerating it with getline() leaves me with 3. What's really got me scratching my head is that this is exactly what the standard says it should do. (21.3.7.9) Even Python has similar behaviour (but it gives me the newlines too - C++ chops them off.) Is this some weird thing where C++ is expected lines to be terminated, and not separated by '\n', and I'm feeding it differently? Edit Clearly, I need to expand a bit here. I've met up with two philosophies of determining what a "line" in a file is: Lines are terminated by newlines - Dominant in systems such as Linux, and editors like vim. Possible to have a slightly "odd" file by not having a final '\n' (a "noeol" in vim). Impossible to have a blank line at the end of a file. Lines are separated by newlines - Dominant in just about every Windows editor I've ever come across. Every file is valid, and it's possible to have the last line be blank. Of course, YMMV as to what a newline is. I've always treated these as two completely different schools of thought. One earlier point I tried to make was to ask if the C++ standard was explicitly or merely implicitly following the first. (Curiously, where is Mac? terminated or separated?)

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  • Why does Scala apply thunks automatically, sometimes?

    - by Anonymouse
    At just after 2:40 in ShadowofCatron's Scala Tutorial 3 video, it's pointed out that the parentheses following the name of a thunk are optional. "Buh?" said my functional programming brain, since the value of a function and the value it evaluates to when applied are completely different things. So I wrote the following to try this out. My thought process is described in the comments. object Main { var counter: Int = 10 def f(): Int = { counter = counter + 1; counter } def runThunk(t: () => Int): Int = { t() } def main(args: Array[String]): Unit = { val a = f() // I expect this to mean "apply f to no args" println(a) // and apparently it does val b = f // I expect this to mean "the value f", a function value println(b) // but it's the value it evaluates to when applied to no args println(b) // and the evaluation happens immediately, not in the call runThunk(b) // This is an error: it's not println doing something funny runThunk(f) // Not an error: seems to be val doing something funny } }   To be clear about the problem, this Scheme program (and the console dump which follows) shows what I expected the Scala program to do. (define counter (list 10)) (define f (lambda () (set-car! counter (+ (car counter) 1)) (car counter))) (define runThunk (lambda (t) (t))) (define main (lambda args (let ((a (f)) (b f)) (display a) (newline) (display b) (newline) (display b) (newline) (runThunk b) (runThunk f)))) > (main) 11 #<procedure:f> #<procedure:f> 13   After coming to this site to ask about this, I came across this answer which told me how to fix the above Scala program: val b = f _ // Hey Scala, I mean f, not f() But the underscore 'hint' is only needed sometimes. When I call runThunk(f), no hint is required. But when I 'alias' f to b with a val then apply it, it doesn't work: the evaluation happens in the val; and even lazy val works this way, so it's not the point of evaluation causing this behaviour.   That all leaves me with the question: Why does Scala sometimes automatically apply thunks when evaluating them? Is it, as I suspect, type inference? And if so, shouldn't a type system stay out of the language's semantics? Is this a good idea? Do Scala programmers apply thunks rather than refer to their values so much more often that making the parens optional is better overall? Examples written using Scala 2.8.0RC3, DrScheme 4.0.1 in R5RS.

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  • In a PHP project, how do you organize and access your helper objects?

    - by Pekka
    How do you organize and manage your helper objects like the database engine, user notification, error handling and so on in a PHP based, object oriented project? Say I have a large PHP CMS. The CMS is organized in various classes. A few examples: the database object user management an API to create/modify/delete items a messaging object to display messages to the end user a context handler that takes you to the right page a navigation bar class that shows buttons a logging object possibly, custom error handling etc. I am dealing with the eternal question, how to best make these objects accessible to each part of the system that needs it. my first apporach, many years ago was to have a $application global that contained initialized instances of these classes. global $application; $application->messageHandler->addMessage("Item successfully inserted"); I then changed over to the Singleton pattern and a factory function: $mh =&factory("messageHandler"); $mh->addMessage("Item successfully inserted"); but I'm not happy with that either. Unit tests and encapsulation become more and more important to me, and in my understanding the logic behind globals/singletons destroys the basic idea of OOP. Then there is of course the possibility of giving each object a number of pointers to the helper objects it needs, probably the very cleanest, resource-saving and testing-friendly way but I have doubts about the maintainability of this in the long run. Most PHP frameworks I have looked into use either the singleton pattern, or functions that access the initialized objects. Both fine approaches, but as I said I'm happy with neither. I would like to broaden my horizon on what is possible here and what others have done. I am looking for examples, additional ideas and pointers towards resources that discuss this from a long-term, real-world perspective. Also, I'm interested to hear about specialized, niche or plain weird approaches to the issue. Bounty I am following the popular vote in awarding the bounty, the answer which is probably also going to give me the most. Thank you for all your answers!

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  • Myself throwing NullReferenceException... needs help

    - by Amit Ranjan
    I know it might be a weird question and its Title too, but i need your help. I am a .net dev , working on platform for the last 1.5 years. I am bit confused on the term usually we say " A Good Programmer ". I dont know ,what are the qualities of a good programmer ? Is the guy who writes a bug free code? or Can develop applications solely? or blah blah blah...lots of points. I dont know... But as far i am concerned , I know I am not a good programmer, still in learning phase an needs a lot to learn in coming days. So you guys are requested to please help me with this two problems of mine My first problem is regarding the proper Error Handling, which is a most debatable aspect of programming. We all know we use ` try { } catch { } finally { } ` in our code to manage exception. But even if I use try { } catch(exception ex) { throw ex } finally { } , different guys have different views. I still dont know the good way to handle errors. I can write code, use try-catch but still i feel I lacks something. When I saw the codes generated by .net fx tools even they uses throw ex or `throw new Exception("this is my exception")`.. I am just wondering what will be the best way to achieve the above. All means the same thing but why we avoid something. If it has some demerits then it must be made obselete.Anyways I still dont have one [how to handle errors efficiently?]. I generally follow the try-catch(execoption ex){throw ex}, and usually got stucked in debates with leads why you follow this why not that... 2.Converting your entire code blocks in modules using Design patterns of some OOPs concepts. How do you guys decide what architeture or pattern will be the best for my upcoming application based on its working, flow etc. I need to know what you guys can see that I can't. Since I know , I dont have that much experience but I can say, with my experience that experience doesnot comes either from degree/certificates or success you made instead it cames from failures you faced or got stucking situations. Pleas help me out.

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  • Error using paho-mqtt in App Engine Python App

    - by calumb
    I am trying to right a Google Cloud Platform app in python with Flask that makes an MQTT connection. I have included the paho python library by doing pip install paho-mqtt -t libs/. However, when I try to run the app, even if I don't try to connect to MQTT. I get a weird error about IP address checking: RuntimeError: error('illegal IP address string passed to inet_pton',) It seems something in the remote_socket lib is causing a problem. Is this a security issue? Is there someway to disable it? Relevant code: from flask import Flask import paho.mqtt.client as mqtt import logging as logger app = Flask(__name__) # Note: We don't need to call run() since our application is embedded within # the App Engine WSGI application server. #callback to print out connection status def on_connect(mosq, obj, rc): logger.info('on_connect') if rc == 0: logger.info("Connected") mqttc.subscribe('test', 0) else: logger.info(rc) def on_message(mqttc, obj, msg): logger.info(msg.topic+" "+str(msg.qos)+" "+str(msg.payload)) mqttc = mqtt.Client("mqttpy") mqttc.on_message = on_message mqttc.on_connect = on_connect As well as full stack trace: ERROR 2014-06-03 15:14:57,285 wsgi.py:262] Traceback (most recent call last): File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 239, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 298, in _LoadHandler handler, path, err = LoadObject(self._handler) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/runtime/wsgi.py", line 84, in LoadObject obj = __import__(path[0]) File "/Users/cbarnes/code/ignite/tank-demo/appengine-flask-demo/main.py", line 24, in <module> mqttc = mqtt.Client("mqtthtpp") File "/Users/cbarnes/code/ignite/tank-demo/appengine-flask-demo/lib/paho/mqtt/client.py", line 403, in __init__ self._sockpairR, self._sockpairW = _socketpair_compat() File "/Users/cbarnes/code/ignite/tank-demo/appengine-flask-demo/lib/paho/mqtt/client.py", line 255, in _socketpair_compat listensock.bind(("localhost", 0)) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/dist27/socket.py", line 222, in meth return getattr(self._sock,name)(*args) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 668, in bind self._SetProtoFromAddr(request.mutable_proxy_external_ip(), address) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 632, in _SetProtoFromAddr proto.set_packed_address(self._GetPackedAddr(address)) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 627, in _GetPackedAddr AI_NUMERICSERV|AI_PASSIVE): File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 338, in getaddrinfo canonical=(flags & AI_CANONNAME)) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 211, in _Resolve canon, aliases, addresses = _ResolveName(name, families) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/remote_socket/_remote_socket.py", line 229, in _ResolveName apiproxy_stub_map.MakeSyncCall('remote_socket', 'Resolve', request, reply) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 94, in MakeSyncCall return stubmap.MakeSyncCall(service, call, request, response) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 328, in MakeSyncCall rpc.CheckSuccess() File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/api/apiproxy_rpc.py", line 156, in _WaitImpl self.request, self.response) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 200, in MakeSyncCall self._MakeRealSyncCall(service, call, request, response) File "/Users/cbarnes/google-cloud-sdk/platform/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 234, in _MakeRealSyncCall raise pickle.loads(response_pb.exception()) RuntimeError: error('illegal IP address string passed to inet_pton',) INFO 2014-06-03 15:14:57,291 module.py:639] default: "GET / HTTP/1.1" 500 - Thanks!

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  • iPhone: Grouped tables and navigation controller issues

    - by Jack Griffiths
    Hi there, I've set up a grouped table on my app, and pushing to new views works fine. Except for one thing. The titles and stack layout are all weird. Here's the breakdown: I have two sections in my table. When I tap on the first row in the first section, it takes me to the correct view, but the title of the new view is the name of the first row in the second section of the table. In turn, the second row in the first section's title is the second row in the second section's title. If I tap on the second row in the second section of the root view table, the navigation button goes to the second row in the first section of the table. So here's a diagram of my table: Table Section 1 Row 1 Row 2 Row 3 Table Section 2 Row A Row B Row C So if I tap on row 3, the title of the pushed view is Row C. The navigation button tells me to go back to Row 3, then eventually ending up at the root view. Here's my implementation file pushing the views: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { //CSS if ([[arryClientSide objectAtIndex:indexPath.row] isEqual:@"CSS"]) { CSSViewController *css = [[CSSViewController alloc] initWithNibName:@"CSSViewController" bundle:nil]; [css setTitle:@"CSS"]; [self.navigationController pushViewController:css animated:YES]; } //HTML if ([[arryClientSide objectAtIndex:indexPath.row] isEqual:@"HTML"]) { HTMLViewController *html = [[HTMLViewController alloc] initWithNibName:@"HTMLViewController" bundle:nil]; [html setTitle:@"HTML"]; [self.navigationController pushViewController:html animated:YES]; } //JS if ([[arryClientSide objectAtIndex:indexPath.row] isEqual:@"JavaScript"]) { JSViewController *js = [[JSViewController alloc] initWithNibName:@"JSViewController" bundle:nil]; [js setTitle:@"JavaScript"]; [self.navigationController pushViewController:js animated:YES]; } //PHP if ([[arryServerSide objectAtIndex:indexPath.row] isEqual:@"PHP"]) { PHPViewController *php = [[PHPViewController alloc] initWithNibName:@"PHPViewController" bundle:nil]; [php setTitle:@"PHP"]; [self.navigationController pushViewController:php animated:YES]; } //SQL if ([[arryServerSide objectAtIndex:indexPath.row] isEqual:@"SQL"]) { SQLViewController *sql = [[SQLViewController alloc] initWithNibName:@"SQLViewController" bundle:nil]; [sql setTitle:@"SQL"]; [self.navigationController pushViewController:sql animated:YES]; } & the array feeding the table's data: - (void)viewDidLoad { [super viewDidLoad]; arryClientSide = [[NSArray alloc] initWithObjects:@"CSS",@"HTML",@"JavaScript",nil]; arryServerSide = [[NSArray alloc] initWithObjects:@"Objective-C", @"PHP",@"SQL",nil]; // arryResources = [[NSArray alloc] initWithObjects:@"HTML Colour Codes", @"Useful Resources", @"About",nil]; self.title = @"Select a Language"; [super viewDidLoad]; // Uncomment the following line to display an Edit button in the navigation bar for this view controller. // self.navigationItem.rightBarButtonItem = self.editButtonItem; } Any help would be greatly appreciated. Jack

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  • Normalizing Item Names & Synonyms

    - by RabidFire
    Consider an e-commerce application with multiple stores. Each store owner can edit the item catalog of his store. My current database schema is as follows: item_names: id | name | description | picture | common(BOOL) items: id | item_name_id | picture | price | description | picture item_synonyms: id | item_name_id | name | error(BOOL) Notes: error indicates a wrong spelling (eg. "Ericson"). description and picture of the item_names table are "globals" that can optionally be overridden by "local" description and picture fields of the items table (in case the store owner wants to supply a different picture for an item). common helps separate unique item names ("Jimmy Joe's Cheese Pizza" from "Cheese Pizza") I think the bright side of this schema is: Optimized searching & Handling Synonyms: I can query the item_names & item_synonyms tables using name LIKE %QUERY% and obtain the list of item_name_ids that need to be joined with the items table. (Examples of synonyms: "Sony Ericsson", "Sony Ericson", "X10", "X 10") Autocompletion: Again, a simple query to the item_names table. I can avoid the usage of DISTINCT and it minimizes number of variations ("Sony Ericsson Xperia™ X10", "Sony Ericsson - Xperia X10", "Xperia X10, Sony Ericsson") The down side would be: Overhead: When inserting an item, I query item_names to see if this name already exists. If not, I create a new entry. When deleting an item, I count the number of entries with the same name. If this is the only item with that name, I delete the entry from the item_names table (just to keep things clean; accounts for possible erroneous submissions). And updating is the combination of both. Weird Item Names: Store owners sometimes use sentences like "Harry Potter 1, 2 Books + CDs + Magic Hat". There's something off about having so much overhead to accommodate cases like this. This would perhaps be the prime reason I'm tempted to go for a schema like this: items: id | name | picture | price | description | picture (... with item_names and item_synonyms as utility tables that I could query) Is there a better schema you would suggested? Should item names be normalized for autocomplete? Is this probably what Facebook does for "School", "City" entries? Is the first schema or the second better/optimal for search? Thanks in advance! References: (1) Is normalizing a person's name going too far?, (2) Avoiding DISTINCT

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  • I want to set the AutoCompleteMode property in ApplyCellStyleToEditingControl subroutine

    - by Ranjan Gupta
    Hi, I am creating a DataGridView Column. and it is working well. now I want to customise this column with AutoCompleteMode, and AutoCompleteSource properties to show the customised data. I made the properties for this columns, and these are also working well. but these properties are not working in the "ApplyCellStyleToEditingControl" subroutine. Please help me to use these column properties in the "ApplyCellStyleToEditingControl" subroutine. Public Class DataGridViewDataValueColumn Inherits DataGridViewColumn Dim m_AutoCompleteMode As AutoCompleteMode, _ m_AutoCompleteSource As AutoCompleteSource, _ m_AutoCompleteStringCollection As AutoCompleteStringCollection Public Sub New() MyBase.New(New DataValueCell()) End Sub Public Overrides Property CellTemplate() As DataGridViewCell Get Return MyBase.CellTemplate End Get Set(ByVal value As DataGridViewCell) ' Ensure that the cell used for the template is a DataValueCell. If (value IsNot Nothing) AndAlso _ Not value.GetType().IsAssignableFrom(GetType(DataValueCell)) _ Then Throw New InvalidCastException("Must be a DataValueCell") End If MyBase.CellTemplate = value End Set End Property Region "User Defined Properties" '&*--------------------------------------*&' <Description("Indicates the text completion behaviour of the combo box."), DefaultValue(AutoCompleteMode.None)> _ Public Property AutoCompleteMode() As AutoCompleteMode Get Return m_AutoCompleteMode End Get Set(ByVal value As AutoCompleteMode) m_AutoCompleteMode = value End Set End Property <Description("The source of complete strings used to automatic completion."), DefaultValue(AutoCompleteSource.None)> _ Public Property AutoCompleteSource() As AutoCompleteSource Get Return m_AutoCompleteSource End Get Set(ByVal value As AutoCompleteSource) m_AutoCompleteSource = value End Set End Property <Description("The autocomplete custom source.")> _ Public Property AutoCompleteCustomSource() As AutoCompleteStringCollection Get Return m_AutoCompleteStringCollection End Get Set(ByVal value As AutoCompleteStringCollection) m_AutoCompleteStringCollection = value End Set End Property End Region End Class '&*--------------------------------------*&' Class DataValueCell Inherits DataGridViewTextBoxCell Public Sub New() ' End Sub Public Overrides ReadOnly Property EditType As Type Get Return GetType(PCLDataGridViewTextBoxEditingControl) End Get End Property End Class '&*--------------------------------------*&' '&* Edit DataGridView Columns *&' '&*--------------------------------------*&' Class PCLDataGridViewTextBoxEditingControl Inherits DataGridViewTextBoxEditingControl Public Overrides Function EditingControlWantsInputKey(ByVal keyData As Keys, ByVal dataGridViewWantsInputKey As Boolean) As Boolean Select Case ((keyData And Keys.KeyCode)) Case Keys.Prior, Keys.Next, Keys.End, Keys.Home, Keys.Left, Keys.Up, Keys.Right, Keys.Down, Keys.Delete Return True End Select Return MyBase.EditingControlWantsInputKey(keyData, dataGridViewWantsInputKey) End Function Public Overrides Sub ApplyCellStyleToEditingControl(ByVal dataGridViewCellStyle As DataGridViewCellStyle) With DirectCast(Me, TextBox) '.AutoCompleteMode = DataGridViewDataValueColumn.AutoCompleteMode_Value '.AutoCompleteSource = DataGridViewDataValueColumn.AutoCompleteSource_Value '.AutoCompleteCustomSource = MyBase.AutoCompleteCustomSource End With End Sub End Class

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  • Facebook Like box and Like buttons return Error

    - by spartan
    I'm integrating FB social plugins - Like box and Like buttons (as iframes) - on a web page, but they don't work. When I click on Like in "Like box", I get "Error" text with link, which displays a message dialog "The page at https://www.facebook.com/provocateur.eu could not be reached.". JSON response is: for (;;);{"__ar":1,"payload":{"requires_login":false,"success":false,"already_connected":false,"is_admin":false,"show_error":true,"error_info":{"brief":"Website Inaccessible","full":"The page at https:\/\/www.facebook.com\/provocateur.eu could not be reached.","errorUri":"\/connect\/connect_to_node_error.php?title=Website+Inaccessible&body=The+page+at+https\u00253A\u00252F\u00252Fwww.facebook.com\u00252Fprovocateur.eu+could+not+be+reached.&hash=AQARp73z7huT0Eiu"}}} When I click on the Like button, the JSON response is: for (;;);{"__ar":1,"payload":{"requires_login":false,"success":false,"already_connected":false,"is_admin":false,"show_error":true,"error_info":{"brief":"An error occurred.","full":"There was an error liking the page. If you are the page owner, please try running your page through the linter on the Facebook devsite (https:\/\/developers.facebook.com\/tools\/lint\/) and fixing any errors.","errorUri":"\/connect\/connect_to_node_error.php?title=An+error+occurred.&body=There+was+an+error+liking+the+page.+If+you+are+the+page+owner\u00252C+please+try+running+your+page+through+the+linter+on+the+Facebook+devsite+\u002528https\u00253A\u00252F\u00252Fdevelopers.facebook.com\u00252Ftools\u00252Flint\u00252F\u002529+and+fixing+any+errors.&hash=AQAFI_8ieMUGPPxS"}}} This is the "Like box" iframe code: <iframe frameborder="0" scrolling="no" style="border:none; overflow:hidden; width:240px; height:70px;" src="//www.facebook.com/plugins/likebox.php?href=http%3A%2F%2Fwww.facebook.com%2Fprovocateur.eu&width=240&height=70&colorscheme=dark&show_faces=false&border_color&stream=false&header=true&appId=283499041689204"></iframe> and this is the "Like button" iframe code: <iframe frameborder="0" scrolling="no" style="border:none; overflow:hidden; width:203px; height:21px;" src="//www.facebook.com/plugins/like.php?href&amp;send=false&amp;layout=button_count&amp;width=203&amp;show_faces=false&amp;action=like&amp;colorscheme=light&amp;font=arial&amp;height=21&amp;appId=283499041689204"></iframe> The behaviour is the same for admin and non-admin visitors and for any browser. I created application with the same name as FB page with appId 283499041689204. Web page is XHTML transitional valid, and it contains no errors according FB debugger/linter. Formely there was age restriction (17+), but I removed it and for the moment it is accessible for anyone (13+). URL of web page: http://provocateur.eu/ URL of FB page: in the first error message Any help appriciated. Thanks in advance.

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  • Reason why UIImageView gives me a 'distorted' image sometimes

    - by Cedric Vandendriessche
    I have a custom UIView with a UILabel and a UIImageView subview. (tried using UIImageView subclass aswell). I assign an image to it and add the view to the screen. I wrote a function which adds the amount of LetterBoxes to the screen as there are letters in the word: - (void)drawBoxesForWord:(NSString *)word { if(boxesContainer == nil) { /* Create a container for the LetterBoxes (animation purposes) */ boxesContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 205, 320, 50)]; [self.view addSubview:boxesContainer]; } /* Calculate width of letterboxes */ NSInteger numberOfCharacters = [word length]; CGFloat totalWidth = numberOfCharacters * 28 + (numberOfCharacters - 1) * 3; CGFloat leftCap = (320 - totalWidth) / 2; [letters removeAllObjects]; /* Draw the boxes to the screen */ for (int i = 0; i < numberOfCharacters; i++) { LetterBox *letter = [[LetterBox alloc] initWithFrame:CGRectMake(leftCap + i * 31 , 0, 28, 40)]; [letters addObject:letter]; [boxesContainer addSubview:letter]; [letter release]; }} This gives me the image below: http://www.imgdumper.nl/uploads2/4ba3b2c72bb99/4ba3b2c72abfd-Goed.png But sometimes it gives me this: imgdumper.nl/uploads2/4ba3b2d888226/4ba3b2d88728a-Fout.png I add them to the same boxesContainer but they first remove themselves from the superview, so it's not like you see them double or something. What I find weird is that they are all good or all bad.. This is the init function for my LetterBox: if (self == [super initWithFrame:aRect]) { /* Create the box image with same frame */ boxImage = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height)]; boxImage.contentMode = UIViewContentModeScaleAspectFit; boxImage.image = [UIImage imageNamed:@"SpaceOpen.png"]; [self addSubview:boxImage]; /* Create the label with same frame */ letterLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height)]; letterLabel.backgroundColor = [UIColor clearColor]; letterLabel.font = [UIFont fontWithName:@"ArialRoundedMTBold" size:26]; letterLabel.textColor = [UIColor blackColor]; letterLabel.textAlignment = UITextAlignmentCenter; [self addSubview:letterLabel]; } return self;} Does anyone have an idea why this could be? I'd rather have them display correctly every time :)

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  • Radio button inside anchor element is reset after jQuery click handler

    - by GrievousAngel
    I have a situation where an element, of type radio, is contained in an element. The anchor element has a href but I want to override that behaviour by adding a jQuery 'click' handler to the element. The click handler makes the radio button inside it the selected one within the group. This all works when the anchor is clicked, however, when the radio button is clicked it appears that jQuery resets the selected radio to the previously selected one! Here is a the simplified page that duplicates the issue: <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function() { $("#a1").click(function(event) { anchorClicked("a1"); return false; }); $("#a2").click(function(event) { anchorClicked("a2"); return false; }); }); function anchorClicked(anchorId) { $('#' + anchorId + ' input:radio').attr("checked", true); alert("Look at what is selected and what happens after the event when this dialog is closed!"); } </script> </head> <body> <form> <ul> <li id="li1"> <a id="a1" href="javascript:alert('default functionality')"> <input value="1" name="rb" type="radio" id="rb1"> <span>Details 1</span> </a> </li> <li id="li2"> <a id="a2" href="javascript:alert('default functionality')"> <input value="2" name="rb" type="radio" id="rb2"> <span>Details 2</span> </a> </li> </ul> </form> </body> Does anyone have any idea how I can prevent jQuery for resetting the radio button?

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  • How to move a kinect skeleton to another position

    - by Ewerton
    I am working on a extension method to move one skeleton to a desired position in the kinect field os view. My code receives a skeleton to be moved and the destiny position, i calculate the distance between the received skeleton hip center and the destiny position to find how much to move, then a iterate in the joint applying this factor. My code, actualy looks like this. public static Skeleton MoveTo(this Skeleton skToBeMoved, Vector4 destiny) { Joint newJoint = new Joint(); ///Based on the HipCenter (i dont know if it is reliable, seems it is.) float howMuchMoveToX = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.X - destiny.X); float howMuchMoveToY = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Y - destiny.Y); float howMuchMoveToZ = Math.Abs(skToBeMoved.Joints[JointType.HipCenter].Position.Z - destiny.Z); float howMuchToMultiply = 1; // Iterate in the 20 Joints foreach (JointType item in Enum.GetValues(typeof(JointType))) { newJoint = skToBeMoved.Joints[item]; // This adjust, try to keeps the skToBeMoved in the desired position if (newJoint.Position.X < 0) howMuchToMultiply = 1; // if the point is in a negative position, carry it to a "more positive" position else howMuchToMultiply = -1; // if the point is in a positive position, carry it to a "more negative" position // applying the new values to the joint SkeletonPoint pos = new SkeletonPoint() { X = newJoint.Position.X + (howMuchMoveToX * howMuchToMultiply), Y = newJoint.Position.Y, // * (float)whatToMultiplyY, Z = newJoint.Position.Z, // * (float)whatToMultiplyZ }; newJoint.Position = pos; skToBeMoved.Joints[item] = newJoint; //if (skToBeMoved.Joints[JointType.HipCenter].Position.X < 0) //{ // if (item == JointType.HandLeft) // { // if (skToBeMoved.Joints[item].Position.X > 0) // { // } // } //} } return skToBeMoved; } Actualy, only X position is considered. Now, THE PROBLEM: If i stand in a negative position, and move my hand to a positive position, a have a strange behavior, look this image To reproduce this behaviour you could use this code using (SkeletonFrame frame = e.OpenSkeletonFrame()) { if (frame == null) return new Skeleton(); if (skeletons == null || skeletons.Length != frame.SkeletonArrayLength) { skeletons = new Skeleton[frame.SkeletonArrayLength]; } frame.CopySkeletonDataTo(skeletons); Skeleton skeletonToTest = skeletons.Where(s => s.TrackingState == SkeletonTrackingState.Tracked).FirstOrDefault(); Vector4 newPosition = new Vector4(); newPosition.X = -0.03412333f; newPosition.Y = 0.0407479f; newPosition.Z = 1.927342f; newPosition.W = 0; // ignored skeletonToTest.MoveTo(newPosition); } I know, this is simple math, but i cant figure it out why this is happen. Any help will be apreciated.

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  • Is there a way to split a widescreen monitor in to two or more virtual monitors?

    - by Mike Thompson
    Like most developers I have grown to love dual monitors. I won't go into all the reasons for their goodness; just take it as a given. However, they are not perfect. You can never seem to line them up "just right". You always end up with the monitors at slight funny angles. And of course the bezel always gets in the way. And this is with identical monitors. The problem is much worse with different monitors -- VMWare's multi monitor feature won't even work with monitors of differnt resolutions. When you use multiple monnitors, one of them becomes your primary monitor of focus. Your focus may flip from one monitor to the other, but at any point in time you are usually focusing on only one monitor. There are exceptions to this (WinDiff, Excel), but this is generally the case. I suggest that having a single large monitor with all the benefits of multiple smaller monitors would be a better solution. Wide screen monitors are fantastic, but it is hard to use all the space efficiently. If you are writing code you are generally working on the left-hand side of the window. If you maximize an editor on a wide-screen monitor the right-hand side of the window will be a sea of white. Programs like WinSplit Revolution will help to organise your windows, but this is really just addressing the symptom, not the problem. Even with WinSplit Revolution, when you maximise a window it will take up the whole screen. You can't lock a window into a specific section of the screen. This is where virtual monitors comes in. What would be really nice is a video driver that sits on top of the existing driver, but allows a single monitor to be virtualised into multiple monitors. Control Panel would see your single physical monitor as two or more virtual monitors. The software could even support a virtual bezel to emphasise what is happening, or you could opt for seamless mode. Programs like WinSplit Revolution and UltraMon would still work. This virtual video driver would allow you to slice & dice your physical monitor into as many virtual monitors as you want. Does anybody know if such software exists? If not, are there any budding Windows display driver guru's out there willing to take up the challenge? I am not after the myriad of virtual desktop/window manager programs that are available. I get frustrated with these programs. They seem good at first but they usually have some strange behaviour and don't work well with other programs (such as WinSplit Revolution). I want the real thing!

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  • Opening Macro definitions: tdfx_span.c: lvalue required as left operand of assignment

    - by anttir
    Hi, I'm trying to compile X11R6-7.0 under Ubuntu maverick and got some weird compilation errors I'm unable to resolve myself. I needed X11R6-7.0 as ati catalyst drivers don't support newer xorg and oss drivers don't support 3d acceleration of my hardware. Anyone know what this error message means? I know some C but I got a bit confused. Does it mean GET_FB_DATA macro returned NULL or some method/property not set? Any further insight how to "debug" preprocessor definitions at this point would be great. I don't think I can print anything useful with #error. The error I get: tdfx_span.c: In function ‘tdfxDDWriteDepthPixels’: tdfx_span.c:976: error: lvalue required as left operand of assignment tdfx_span.c:1008: error: lvalue required as left operand of assignment tdfx_span.c: In function ‘write_stencil_pixels’: tdfx_span.c:1242: error: lvalue required as left operand of assignment the Code: 958- switch (depth_size) { 959- case 16: 960- GetBackBufferInfo(fxMesa, &backBufferInfo); 961- /* 962- * Note that the _LOCK macro adds a curly brace, 963- * and the UNLOCK macro removes it. 964- */ 965- WRITE_FB_SPAN_LOCK(fxMesa, info, 966- GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); 967- { 968- LFBParameters ReadParams; 969- GetFbParams(fxMesa, &info, &backBufferInfo, 970- &ReadParams, sizeof(GLushort)); 971- for (i = 0; i < n; i++) { 972- if (mask[i] && visible_pixel(fxMesa, x[i], y[i])) { 973- xpos = x[i] + fxMesa->x_offset; 974- ypos = bottom - y[i]; 975- d16 = depth[i]; 976: PUT_FB_DATA(&ReadParams, GLushort, xpos, ypos, d16); 977- } 978- } 979- } 980- WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); 981- break; 982- case 24: And relative macros: #define GET_FB_DATA(ReadParamsp, type, x, y) \ (((x) < (ReadParamsp)->firstWrappedX) \ ? (((type *)((ReadParamsp)->lfbPtr)) \ [(y) * ((ReadParamsp)->LFBStrideInElts) \ + (x)]) \ : (((type *)((ReadParamsp)->lfbWrapPtr)) \ [((y)) * ((ReadParamsp)->LFBStrideInElts) \ + ((x) - (ReadParamsp)->firstWrappedX)])) #define GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) \ (((type *)((ReadParamsp)->lfbPtr)) \ [(y) * ((ReadParamsp)->LFBStrideInElts) \ + (x)]) #define GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) \ (((type *)((ReadParamsp)->lfbWrapPtr)) \ [((y)) * ((ReadParamsp)->LFBStrideInElts) \ + ((x) - (ReadParamsp)->firstWrappedX)]) #define PUT_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) #define PUT_ORDINARY_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) #define PUT_WRAPPED_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) The LFBParameters Struct 483-typedef struct 484-{ 485- void *lfbPtr; 486- void *lfbWrapPtr; 487- FxU32 LFBStrideInElts; 488- GLint firstWrappedX; 489-} 490:LFBParameters; Thanks for looking.

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  • Delphi Unit local variables - how to make each instance unique?

    - by Justin
    Ok, this, I'm sure is something simple that is easy to do. The problem : I've inherited scary spaghetti code and am slowly trying to better it when new features need adding - generally when a refactor makes adding the new feature neater. I've got a bunch of code I'm packing into a single unit which, in different places in the application, controls the same physical thing in the outside world. The control appears in several places in the application and operates slightly differently in each instance. What I've done is to create a unit with all of the features I need which I can simply drop, as a frame, into each form that requires it. Each form then uses the unit's interface methods to customise the behaviour for each instance. The problem within the problem : In the unit in question (the frame) I have a variable declared in the IMPLEMENTATION section - local to the unit. I also have a procedure, declared in the TYPE section which takes an argument and assigns that argument to the local variable in question - each form passes a unique variable to each instance of the frame/unit. What I want it to do is for each instance of the frame to keep its own version of that variable, different from the others, and use that to define how it operates. What seems to be happening, however, is that all instances are using the same value, even if I explicitly pass each instance a different variable. ie: Unit FlexibleUnit; interface uses //the uses stuff type TFlexibleUnit=class(TFrame) //declarations including procedure makeThisInstanceX(passMeTheVar:integer); private // public // end; implementation uses //the uses var myLocalVar; procedure makeThisInstanceX(passMeTheVar:integer); begin myLocalVar:=passMeTheVar; end; //other procedures using myLocalVar //etc to the end; Now somewhere in another Form I've dropped this Frame onto the Design pane, sometimes two of these frames on one Form, and have it declared in the proper places, etc. Each is unique in that : ThisFlexibleUnit : TFlexibleUnit; ThatFlexibleUnit : TFlexibleUnit; and when I do a: ThisFlexibleUnit.makeThisInstanceX(var1); //want to behave in way "var1" ThatFlexibleUnit.makeThisInstanceX(var2); //want to behave in way "var2" it seems that they both share the same variable "myLocalVar". Am I doing this wrong, in principle? If this is the correct method then it's a matter of debugging what I have (which is too huge to post) but if this is not correct in principle then is there a way to do what I am suggesting? Thanks in advance, Stack Overflow - you guys (and gals!) are legendary.

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  • jQuery fadeIn is not working in Internet Explorer

    - by Nazaf
    I have the following HTML DIV which does not work using FadeIn in IE: $(".tip").fadeIn("slow"); /* Is not working in IE. */ $(".tip").show(); /* Works well in IE, that's weird. */ <div class="tip" style="width: 220px; display: none;"> <div class="tip-header"> <span><b>Title</b></span> <div class="right close"><a href="javascript:void(0);">close</a> <img alt="" src="/Images/close-normal.png"/></div> </div> <div class="tip-content">EBody comes here.</div> </div> .tip { display: block; z-index: 99999; position: fixed; background-color: #ffffff; -moz-box-shadow: 2px 2px 10px 2px rgba(0, 0, 0, 0.6); -webkit-box-shadow: 2px 2px 10px 2px rgba(0, 0, 0, 0.6); border:solid 1px #82C2FA; -moz-border-radius: 8px; -webkit-border-radius: 8px; } .tip-header { padding: 8px; min-height: 10px; -moz-border-radius-topleft: 8px; -moz-border-radius-topright: 8px; -webkit-border-radius-topright: 8px; -webkit-border-radius-topleft: 8px; background-color: #CFE6FD; border-bottom: 1px solid #82C2FA; } .tip-header span { font-size: 14px; color: #666666; } .tip-content { padding: 8px; text-align: left; font-size: 12px; } .close, .whats-this { cursor: pointer; } .close a { color: #085FBC; text-decoration: none; } .close img { vertical-align: bottom; }

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  • Converting C source to C++

    - by Barry Kelly
    How would you go about converting a reasonably large (300K), fairly mature C codebase to C++? The kind of C I have in mind is split into files roughly corresponding to modules (i.e. less granular than a typical OO class-based decomposition), using internal linkage in lieu private functions and data, and external linkage for public functions and data. Global variables are used extensively for communication between the modules. There is a very extensive integration test suite available, but no unit (i.e. module) level tests. I have in mind a general strategy: Compile everything in C++'s C subset and get that working. Convert modules into huge classes, so that all the cross-references are scoped by a class name, but leaving all functions and data as static members, and get that working. Convert huge classes into instances with appropriate constructors and initialized cross-references; replace static member accesses with indirect accesses as appropriate; and get that working. Now, approach the project as an ill-factored OO application, and write unit tests where dependencies are tractable, and decompose into separate classes where they are not; the goal here would be to move from one working program to another at each transformation. Obviously, this would be quite a bit of work. Are there any case studies / war stories out there on this kind of translation? Alternative strategies? Other useful advice? Note 1: the program is a compiler, and probably millions of other programs rely on its behaviour not changing, so wholesale rewriting is pretty much not an option. Note 2: the source is nearly 20 years old, and has perhaps 30% code churn (lines modified + added / previous total lines) per year. It is heavily maintained and extended, in other words. Thus, one of the goals would be to increase mantainability. [For the sake of the question, assume that translation into C++ is mandatory, and that leaving it in C is not an option. The point of adding this condition is to weed out the "leave it in C" answers.]

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  • Internet Explorer 8 + Deflate

    - by Andreas Bonini
    I have a very weird problem.. I really do hope someone has an answer because I wouldn't know where else to ask. I am writing a cgi application in C++ which is executed by Apache and outputs HTML code. I am compressing the HTML output myself - from within my C++ application - since my web host doesn't support mod_deflate for some reason. I tested this with Firefox 2, Firefox 3, Opera 9, Opera 10, Google Chrome, Safari, IE6, IE7, IE8, even wget.. It works with ANYTHING except IE8. IE8 just says "Internet Explorer cannot display the webpage", with no information whatsoever. I know it's because of the compression only because it works if I disable it. Do you know what I'm doing wrong? I use zlib to compress it, and the exact code is: /* Compress it */ int compressed_output_size = content.length() + (content.length() * 0.2) + 16; char *compressed_output = (char *)Alloc(compressed_output_size); int compressed_output_length; Compress(compressed_output, compressed_output_size, (void *)content.c_str(), content.length(), &compressed_output_length); /* Send the compressed header */ cout << "Content-Encoding: deflate\r\n"; cout << boost::format("Content-Length: %d\r\n") % compressed_output_length; cgiHeaderContentType("text/html"); cout.write(compressed_output, compressed_output_length); static void Compress(void *to, size_t to_size, void *from, size_t from_size, int *final_size) { int ret; z_stream stream; stream.zalloc = Z_NULL; stream.zfree = Z_NULL; stream.opaque = Z_NULL; if ((ret = deflateInit(&stream, CompressionSpeed)) != Z_OK) COMPRESSION_ERROR("deflateInit() failed: %d", ret); stream.next_out = (Bytef *)to; stream.avail_out = (uInt)to_size; stream.next_in = (Bytef *)from; stream.avail_in = (uInt)from_size; if ((ret = deflate(&stream, Z_NO_FLUSH)) != Z_OK) COMPRESSION_ERROR("deflate() failed: %d", ret); if (stream.avail_in != 0) COMPRESSION_ERROR("stream.avail_in is not 0 (it's %d)", stream.avail_in); if ((ret = deflate(&stream, Z_FINISH)) != Z_STREAM_END) COMPRESSION_ERROR("deflate() failed: %d", ret); if ((ret = deflateEnd(&stream)) != Z_OK) COMPRESSION_ERROR("deflateEnd() failed: %d", ret); if (final_size) *final_size = stream.total_out; return; }

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  • dynamic module creation

    - by intuited
    I'd like to dynamically create a module from a dictionary, and I'm wondering if adding an element to sys.modules is really the best way to do this. EG context = { a: 1, b: 2 } import types test_context_module = types.ModuleType('TestContext', 'Module created to provide a context for tests') test_context_module.__dict__.update(context) import sys sys.modules['TestContext'] = test_context_module My immediate goal in this regard is to be able to provide a context for timing test execution: import timeit timeit.Timer('a + b', 'from TestContext import *') It seems that there are other ways to do this, since the Timer constructor takes objects as well as strings. I'm still interested in learning how to do this though, since a) it has other potential applications; and b) I'm not sure exactly how to use objects with the Timer constructor; doing so may prove to be less appropriate than this approach in some circumstances. EDITS/REVELATIONS/PHOOEYS/EUREKAE: I've realized that the example code relating to running timing tests won't actually work, because import * only works at the module level, and the context in which that statement is executed is that of a function in the testit module. In other words, the globals dictionary used when executing that code is that of main, since that's where I was when I wrote the code in the interactive shell. So that rationale for figuring this out is a bit botched, but it's still a valid question. I've discovered that the code run in the first set of examples has the undesirable effect that the namespace in which the newly created module's code executes is that of the module in which it was declared, not its own module. This is like way weird, and could lead to all sorts of unexpected rattlesnakeic sketchiness. So I'm pretty sure that this is not how this sort of thing is meant to be done, if it is in fact something that the Guido doth shine upon. The similar-but-subtly-different case of dynamically loading a module from a file that is not in python's include path is quite easily accomplished using imp.load_source('NewModuleName', 'path/to/module/module_to_load.py'). This does load the module into sys.modules. However this doesn't really answer my question, because really, what if you're running python on an embedded platform with no filesystem? I'm battling a considerable case of information overload at the moment, so I could be mistaken, but there doesn't seem to be anything in the imp module that's capable of this. But the question, essentially, at this point is how to set the global (ie module) context for an object. Maybe I should ask that more specifically? And at a larger scope, how to get Python to do this while shoehorning objects into a given module?

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