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  • Java Timers - Functions called not completing!

    - by Matt Swanson
    So I have a TimerTask task calling a function onTimerComplete() in its run() onTimerComplete() looks something like this: private void onTimerComplete(){ myFunc1(); myFunc2(); } I make a Timer t and I schedule the TimerTask with t.schedule(task, 2000); The problem is, when the timer is up and the task runs my onTimerComplete() but that function does not finish. It runs myFunc1() but never finishes it nor does it ever call myFunc2() However, if I call onTimerComplete() directly, everything works. What's the deal here?

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  • JavaScript: Reference a functions local scope as an object

    - by eBusiness
    When I call a function, a local scope is erected for that call. Is there any way to directly reference that scope as an object? Just like window is a reference for the global scope object. Example: function test(foo){ var bar=1 //Now, can I access the object containing foo, bar, arguments and anything //else within the local scope like this: magicIdentifier.bar } Alternately, does anyone have a complete list of what is in the global scope on top of custom variables? Background: I'm trying to get down to a way of completely shifting to global scope from within a function call, the with statement is a joke, call works a little better, but it still breaks for anything declared in function scope but not in global scope, therefore I would declare these few cases in global scope, but that requires me to know what they are. The IE function execScript makes a complete shift, but that only solves the problem for IE. Note: To anyone loading JavaScript dynamically, setTimeout(code,1) is a simple effective hack to achieve global scope, but it will not execute immediately.

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  • Class Structure w/ LINQ, Partial Classes, and Abstract Classes

    - by Jason
    I am following the Nerd Dinner tutorial as I'm learning ASP.NET MVC, and I am currently on Step 3: Building the Model. One part of this section discusses how to integrate validation and business rule logic with the model classes. All this makes perfect sense. However, in the case of this source code, the author only validates one class: Dinner. What I am wondering is, say I have multiple classes that need validation (Dinner, Guest, etc). It doesn't seem smart to me to repeatedly write these two methods in the partial class: public bool IsValid { get { return (GetRuleViolations().Count() == 0); } } partial void OnValidate(ChangeAction action) { if (!IsValid) { throw new ApplicationException("Rule violations prevent saving."); } } What I'm wondering is, can you create an abstract class (because "GetRuleViolations" needs to be implemented separately) and extend a partial class? I'm thinking something like this (based on his example): public partial class Dinner : Validation { public IEnumerable<RuleViolation> GetRuleViolations() { yield break; } } This doesn't "feel" right, but I wanted to check with SO to get opinions of individuals smarter than me on this. I also tested it out, and it seems that the partial keyword on the OnValidate method is causing problems (understandably so). This doesn't seem possible to fix (but I could very well be wrong). Thanks!

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  • Pure Actionscript 3 Adobe Air Application main class constructor not being called

    - by SilverCode
    I'm writing an Air application using only Actionscript, and Flex3 SDK as the compiler. Everything compiles and runs fine under adl, but when the final air file is built and installed, the main class is never initialized. For instance: package { import flash.display.Sprite; public class main extends Sprite { public function main() { trace("Init"); } } } When run under ADL, "Init" will be output to the console, but when installed and run, nothing happens (the constructor for class main is never called).

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  • DataContractSerializer and XSLT not Serializing Class Properties

    - by Russ Clark
    I've written a simple Employee class that I'm trying to serialize to an XDocument and then use XSLT to transform the document to a page that displays both the properties (Name and ID) from the Employee class, and an html form with 2 radio buttons (Approve and Reject) and a submit button. Here is the Employee class: [Serializable, DataContract(Namespace="XSLT_MVC.Controllers/")] public class Employee { [DataMember] public string Name { get; set; } [DataMember] public int ID { get; set; } public Employee() { } public Employee(string name, int id) { Name = name; ID = id; } public XDocument GetDoc() { XDocument doc = new XDocument(); var serializer = new DataContractSerializer(typeof(Employee)); using (var writer = doc.CreateWriter()) { serializer.WriteObject(writer, this); writer.Close(); } return doc; } } And here is the XSLT file: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" > <xsl:output method="html" indent="yes"/> <xsl:template match="/"> <html> <body> <xsl:value-of select="Employee/Name"/> <br /> <xsl:value-of select="Employee/ID"/> <br /> <form method="post" action="/Home/ProcessRequest?id={Employee/ID}"> <input id="Action" name="Action" type="radio" value="Approved"></input> Approved <br /> <input id="Action" name="Action" type="radio" value="Rejected"></input> Rejected <br /> <input type="submit" value="Submit"></input> </form> </body> </html> </xsl:template> </xsl:stylesheet> When I run this, all I get is the html form with the 2 radio buttons and the submit button, but not the properties from the Employee class. I saw a separate StackOverflow post that said I need to change the <xsl:template match="/"> to match on the namespace of my Employee class like this: <xsl:template match="/XSLT_MVC.Controllers"> but when I do that, now all I get are the Employee properties, and not the html form with the 2 radio buttons and the submit button. Does anyone know what needs to be done so that my transform will select and display both the Employee properties and the html form?

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  • Nested Functions in C - Best Practices

    - by Justin Ethier
    I just realized a function may be defined inside another function in C: void main(){ int foo(){ return 2; }; printf("%d\n", foo()); } Besides being a neat trick, the useful thing about this is that the inner function is private to the outer function. But... is that a good enough reason to do this in a "real-world" application? What are the best practices for using this syntax?

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  • How to structure a Genetic Algorithm class hierarchy?

    - by MahlerFive
    I'm doing some work with Genetic Algorithms and want to write my own GA classes. Since a GA can have different ways of doing selection, mutation, cross-over, generating an initial population, calculating fitness, and terminating the algorithm, I need a way to plug in different combinations of these. My initial approach was to have an abstract class that had all of these methods defined as pure virtual, and any concrete class would have to implement them. If I want to try out two GAs that are the same but with different cross-over methods for example, I would have to make an abstract class that inherits from GeneticAlgorithm and implements all the methods except the cross-over method, then two concrete classes that inherit from this class and only implement the cross-over method. The downside to this is that every time I want to swap out a method or two to try out something new I have to make one or more new classes. Is there another approach that might apply better to this problem?

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  • How can I use MPTVOutWindow iPhone undocumented class?

    - by Leg10n
    Hi, I'm an iPhone developer, now I'm developing a game and I just found about the iPhone 2.2 being able to reproduce video on a TV Screen trhough MPTVOutWindow class. After googling I've found a lot of blogs with the News, however none of them give any information on the class, what should I do to implement the class in order to display ouput on the TV?

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  • Call javascript from objective-c, only works with system functions like alert() etc / phonegap

    - by adrian
    hi havent found the solution yet in the forum. i want to call a function i created in the index.html via a objective-c function. As explained in stringByEvaluatingJavaScriptFromString so the network detection doesnt work for me the function gets called but no javascript is called in the index.html here is the code i use - (void)updateReachability:(NSString*)callback { NSString* jsCallback = @"navigator.network.updateReachability"; if (callback) jsCallback = callback; NSString* status = [[NSString alloc] initWithFormat:@"%@({ hostName: '%@', ipAddress: '%@', remoteHostStatus: %d, internetConnectionStatus: %d, localWiFiConnectionStatus: %d });", jsCallback, [[Reachability sharedReachability] hostName], [[Reachability sharedReachability] address], [[Reachability sharedReachability] remoteHostStatus], [[Reachability sharedReachability] internetConnectionStatus], [[Reachability sharedReachability] localWiFiConnectionStatus]]; [webView stringByEvaluatingJavaScriptFromString:status]; [status release]; } If i log the status the string i see can be executed in the index.html file, the syntax is ok. but it doesnt get called if i do alert( etc... it gets called... need some help pls, because network detection is a kill criteria to publish a app!!! Adrian

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  • Convert a byte array to a class containing a byte array in C#

    - by Mathijs
    I've got a C# function that converts a byte array to a class, given it's type: IntPtr buffer = Marshal.AllocHGlobal(rawsize); Marshal.Copy(data, 0, buffer, rawsize); object result = Marshal.PtrToStructure(buffer, type); Marshal.FreeHGlobal(buffer); I use sequential structs: [StructLayout(LayoutKind.Sequential)] public new class PacketFormat : Packet.PacketFormat { } This worked fine, until I tried to convert to a struct/class containing a byte array. [StructLayout(LayoutKind.Sequential)] public new class PacketFormat : Packet.PacketFormat { public byte header; public byte[] data = new byte[256]; } Marshal.SizeOf(type) returns 16, which is too low (should be 257) and causes Marshal.PtrToStructure to fail with the following error: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. I'm guessing that using a fixed array would be a solution, but can it also be done without having to resort to unsafe code?

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  • Python "draw() must be called with Label instance as first argument (got _WindowMetaclass instance i

    - by Amorack
    This is a class I made using Python with pyglet to display a window. class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() pyglet.text.Label("Prototype") windowText = text.Label.draw(Window, "Hello World", font_name = "Times New Roman", font_size = 36, color = (193, 205, 193, 255)) def on_draw(self): self.clear() self.label.draw() Every time I try to run it I get the error "TypeError: unbound method draw() must be called with Label instance as first argument (got _WindowMetaclass instance instead)". I'm pretty sure I know what I have to do (find how to get Label's instance) just not how to do it. Could someone help me understand how to make this work?

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  • Using Unity and interfaces, how do I create a concrete class that implements IDisposable

    - by Ryan ONeill
    I have an interface (IDbAccess) for a database access class so that I can unit test it using Unity. It all works fine in Unity and now I want to make the concrete database class implement IDisposable so that it closes the db connections. My problem is that Unity does not understand that my concrete class is disposable because the interface (IDbAccess) cannot implement another interface. So how can I write code like this (pseudo code) so that Unity is aware that it needs to dispose the class as soon as I am done? Using var MyDbAccessInstance = Unity.Resolve<IDbAccess> { } Thanks Ryan

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  • C stack/scope, variable's lifetime after functions ends

    - by Ranking Stackingblocks
    void someFunc() { int stackInt = 4; someOtherFunc(&stackInt); } Is it the case that stackInt's address space could be reallocated after someFunc ends, making it unsafe to assume that the value passed to someOtherFunc represents the stackInt variable with value 4 that was passed to it? In other words, should I avoid passing stack variables around by address and expecting them to still be alive after the function they were initialised in has ended?

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  • ORA-06502: PL/SQL: numeric or value error: character string buffer too small with Oracle aggregate f

    - by Tunde
    Good day gurus, I have a script that populates tables on a regular basis that crashed and gave the above error. The strange thing is that it has been running for close to 3 months on the production system with no problems and suddenly crashed last week. There has not been any changes on the tables as far as I know. Has anyone encountered something like this before? I believe it has something to do with the aggregate functions I'm implementing in it; but it worked initially. please; kindly find attached the part of the script I've developed into a procedure that I reckon gives the error. CREATE OR REPLACE PROCEDURE V1 IS --DECLARE v_a VARCHAR2(4000); v_b VARCHAR2(4000); v_c VARCHAR2(4000); v_d VARCHAR2(4000); v_e VARCHAR2(4000); v_f VARCHAR2(4000); v_g VARCHAR2(4000); v_h VARCHAR2(4000); v_i VARCHAR2(4000); v_j VARCHAR2(4000); v_k VARCHAR2(4000); v_l VARCHAR2(4000); v_m VARCHAR2(4000); v_n NUMBER(10); v_o VARCHAR2(4000); -- -- Procedure that populates DEMO table BEGIN -- Delete all from the DEMO table DELETE FROM DEMO; -- Populate fields in DEMO from DEMOV1 INSERT INTO DEMO(ID, D_ID, CTR_ID, C_ID, DT_NAM, TP, BYR, ENY, ONG, SUMM, DTW, REV, LD, MD, STAT, CRD) SELECT ID, D_ID, CTR_ID, C_ID, DT_NAM, TP, TO_NUMBER(TO_CHAR(BYR,'YYYY')), TO_NUMBER(TO_CHAR(NVL(ENY,SYSDATE),'YYYY')), CASE WHEN ENY IS NULL THEN 'Y' ELSE 'N' END, SUMMARY, DTW, REV, LD, MD, '1', SYSDATE FROM DEMOV1; -- LOOP THROUGH DEMO TABLE FOR j IN (SELECT ID, CTR_ID, C_ID FROM DEMO) LOOP Select semic_concat(TXTDESC) INTO v_a From GEOT WHERE ID = j.ID; SELECT COUNT(*) INTO v_n FROM MERP M, PROJ P WHERE M.MID = P.COD AND ID = j.ID AND PROAC IS NULL; IF (v_n > 0) THEN Select semic_concat(PRO) INTO v_b FROM MERP M, PROJ P WHERE M.MID = P.COD AND ID = j.ID; ELSE Select semic_concat(PRO || '(' || PROAC || ')' ) INTO v_b FROM MERP M, PROJ P WHERE M.MID = P.COD AND ID = j.ID; END IF; Select semic_concat(VOCNAME('P02',COD)) INTO v_c From PAR WHERE ID = j.ID; Select semic_concat(VOCNAME('L05',COD)) INTO v_d From INST WHERE ID = j.ID; Select semic_concat(NVL(AUTHOR,'Anon') ||' ('||to_char(PUB,'YYYY')||') '||TITLE||', '||EDT) INTO v_e From REFE WHERE ID = j.ID; Select semic_concat(NAM) INTO v_f FROM EDM E, EDO EO WHERE E.EDMID = EO.EDOID AND ID = j.ID; Select semic_concat(VOCNAME('L08', COD)) INTO v_g FROM AVA WHERE ID = j.ID; SELECT or_concat(NAM) INTO v_o FROM CON WHERE ID = j.ID AND NAM = 'Unknown'; IF (v_o = 'Unknown') THEN Select or_concat(JOBTITLE || ' (' || EMAIL || ')') INTO v_h FROM CON WHERE ID = j.ID; ELSE Select or_concat(NAM || ' (' || EMAIL || ')') INTO v_h FROM CON WHERE ID = j.ID; END IF; Select commaencap_concat(COD) INTO v_i FROM PAR WHERE ID = j.ID; IF (v_i = ',') THEN v_i := null; ELSE Select commaencap_concat(COD) INTO v_i FROM PAR WHERE ID = j.ID; END IF; Select commaencap_concat(COD) INTO v_j FROM INST WHERE ID = j.ID; IF (v_j = ',') THEN v_j := null; ELSE Select commaencap_concat(COD) INTO v_j FROM INST WHERE ID = j.ID; END IF; Select commaencap_concat(COD) INTO v_k FROM SAR WHERE ID = j.ID; IF (v_k = ',') THEN v_k := null; ELSE Select commaencap_concat(COD) INTO v_k FROM SAR WHERE ID = j.ID; END IF; Select commaencap_concat(CONID) INTO v_l FROM CON WHERE ID = j.ID; IF (v_l = ',') THEN v_l := null; ELSE Select commaencap_concat(CONID) INTO v_l FROM CON WHERE ID = j.ID; END IF; Select commaencap_concat(PROID) INTO v_m FROM PRO WHERE ID = j.ID; IF (v_m = ',') THEN v_m := null; ELSE Select commaencap_concat(PROID) INTO v_m FROM PRO WHERE ID = j.ID; END IF; -- UPDATE DEMO TABLE UPDATE DEMO SET GEOC = v_a, PRO = v_b, PAR = v_c, INS = v_d, REFER = v_e, ORGR = v_f, AVAY = v_g, CON = v_h, DTH = v_i, INST = v_j, SA = v_k, CC = v_l, EDPR = v_m, CTR = (SELECT NAM FROM EDM WHERE EDMID = j.CTR_ID), COLL = (SELECT NAM FROM EDM WHERE EDMID = j.C_ID) WHERE ID = j.ID; END LOOP; END V1; / The aggregate functions, commaencap_concat (encapsulates with a comma), or_concat (concats with an or) and semic_concat(concats with a semi-colon). the remaining tables used are all linked to the main table DEMO. I have checked the column sizes and there seems to be no problem. I tried executing the SELECT statements alone and they give the same error without populating the tables. Any clues? Many thanks for your anticipated support.

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  • PHP class constant string variable spanning over multiple lines

    - by ebae
    I want to have a string variable for a PHP class, which would be available to all methods. However, this variable is quite long, so I want to separate it into multiple lines. For example, $variable = "line 1" . "line 2" . "line 3"; But above doesn't work. I tried EOD, but EOD is not allowed within class. And when I declare it outside the class, I can't access the variable from within the class. What is the best way?

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  • Simple subclass mappable class in lift

    - by coubeatczech
    Hi, is there any way how to easy subclass a Mapped class in lift framework? class One extends LongKeyedMapper[One] with IdPK{ object sharedField extend MappedString(this) } class Two extends One[*]{ ... } *and now I can't hint the compiler because One is not defined generic. So this doesn't work, what is the right way?

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  • design business class for unit test

    - by Mauro Destro
    I'm trying to clean my code to make it unit-testable. I know that unit tests must be created while coding but... I have to do it now, with code completed. My business class is full of methods with a similar implementation like: var rep=new NHrepository<ModelClass1>(Session); rep.Where(x=>x.Field1==1).ToList(); first error (from my point of view) is that I don't have to use "new" but instead use DI and add in the ctor parameters a INHrepository modelClass1Repository. If in my class I have two or more repository of different model class? Each must be in the ctor? Or probably business class is not build with SeparationOfConcern principle?

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  • How to use sum and count functions

    - by Odette
    hi guys I am trying to get the total count and total sum per salesperson but its not working in my WITH query Currently I have: WITH CALC1 AS (SELECT B.OTSMAN AS SALESMAN, COUNT(B.ONINUM) AS COUNT, SUM(B.OVSVAL) AS SVAL FROM @[email protected] AS B WHERE B.OCSGRP <> 'INT' AND B.OCSGRP <> 'INX' AND B.OCPSBR IN (@OCPSBR@) AND B.ICMATX <> '705' AND B.OCSGRP NOT LIKE 'S/%' GROUP BY B.OTSMAN, B.ONINUM ORDER BY B.OTSMAN ASC) SELECT SALESMAN, COUNT, SVAL FROM CALC1 ORDER BY SALESMAN THE RESULT IS: AM 1 79.03 AM 40 1337.70 AM 48 4627.15 AM 42 2727.40 AM 1 111.79 AM 1 1110.00 AM 52 3018.77 How do i change my query so I only get one record with the total count and value per salesperson? AM 1 13,011.84

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  • Simple extend mappable class in lift

    - by coubeatczech
    Hi, is there any way how to easy subclass a Mapped class in lift framework? class One extends LongKeyedMapper[One] with IdPK{ object sharedField extend MappedString(this) } class Two extends One[*]{ ... } *and now I can't hint the compiler because One is not defined generic. So this doesn't work, what is the right way?

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  • Qt QFileDialog - native dialogs only with static functions?

    - by darron
    I'm trying to simply save a file. However, I need a filename entered without a suffix to automatically get a default suffix (which setDefaultSuffix() does). I'd rather not completely lose the native save dialog just for this. exec() is not overloaded from QDialog, so it totally bypasses the native hook (ignoring the DontUseNativeDialog option even if it's false). If I disable the file overwrite warning and append the default suffix myself after the function returns, then I'd be re-opening the dialog if the user did not want to overwrite... and that's just ugly. Is there some signal I can catch and quickly inject the default suffix if it's not there? I'm guessing not, since it's a native dialog. Is there something I'm doing wrong with the filter? I only have one filter choice. It should use that extension. This seems pretty lame. Launching the save dialog and simply typing "test" should never result in an extensionless file. "test.", yes. "test" no way. That'll really confuse the users when they hit Load and can't see the file they just saved. I guess the cross-platform part of Qt is giving me lowest common denominator file dialog functionality?

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