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• Two method for linking a object using GCC ?

  - by bluewater

  I've known that I should use -l option for liking objects using GCC. that is gcc -o test test.c -L./ -lmy But I found that "gcc -o test2 test.c libmy.so" is working, too. When I use readelf for those two executable I can't find any difference. Then why people use -l option for linking objects? Does it have any advantage?

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• C# start programs

  - by lolalola

  Hi, I'm create program and save with Visual studio: test.exe Then create created program: run.exe, with code: using System.Diagnostics; Process run = new Process(); run.StartInfo.FileName = "test.exe"; run.Start(); Why this progran don't start first program(test.exe)?

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• problem with JsonStore and JsonReader

  - by kalan

  Hello, In my ExtJS application I use EditorGridPanel to show data from server. var applicationsGrid = new Ext.grid.EditorGridPanel({ region: 'west', layout: 'fit', title: '<img src="../../Content/img/app.png" /> ??????????', collapsible: true, margins: '0 0 5 5', split: true, width: '30%', listeners: { 'viewready': { fn: function() { applicationsGridStatusBar.setText('??????????: ' + applicationsStore.getTotalCount()); } } }, store: applicationsStore, loadMask: { msg: '????????...' }, sm: new Ext.grid.RowSelectionModel({ singleSelect: true, listeners: { 'rowselect': { fn: applicationsGrid_onRowSelect} } }), viewConfig: { forceFit: true }, tbar: [{ icon: '../../Content/img/add.gif', text: '????????' }, '-', { icon: '../../Content/img/delete.gif', text: '???????' }, '-'], bbar: applicationsGridStatusBar, columns: [{ header: '??????????', dataIndex: 'ApplicationName', tooltip: '???????????? ??????????', sortable: true, editor: { xtype: 'textfield', allowBlank: false } }, { header: '<img src="../../Content/img/user.png" />', dataIndex: 'UsersCount', align: 'center', fixed: true, width: 50, tooltip: '?????????? ????????????? ??????????', sortable: true }, { header: '<img src="../../Content/img/role.gif" />', dataIndex: 'RolesCount', align: 'center', fixed: true, width: 50, tooltip: '?????????? ????? ??????????', sortable: true}] }); When I use JsonStore without reader it works, but when I try to update any field it uses my 'create' url instead of 'update'. var applicationsStore = new Ext.data.JsonStore({ root: 'applications', totalProperty: 'total', idProperty: 'ApplicationId', messageProperty: 'message', fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}], id: 'app1234', proxy: new Ext.data.HttpProxy({ api: { create: '/api/applications/getapplicationslist1', read: '/api/applications/getapplicationslist', update: '/api/applications/getapplicationslist2', destroy: '/api/applications/getapplicationslist3' } }), autoSave: true, autoLoad: true, writer: new Ext.data.JsonWriter({ encode: false, listful: false, writeAllFields: false }) }); I believe that the problem is that I don't use reader, but when I use JsonReader grid stops showing any data at all. var applicationReader = new Ext.data.JsonReader({ root: 'applications', totalProperty: 'total', idProperty: 'ApplicationId', messageProperty: 'message', fields: [{ name: 'ApplicationId' }, { name: 'ApplicationName', allowBlank: false }, { name: 'UsersCount', allowBlank: false }, { name: 'RolesCount', allowBlank: false}] }); var applicationsStore = new Ext.data.JsonStore({ id: 'app1234', proxy: new Ext.data.HttpProxy({ api: { create: '/api/applications/getapplicationslist1', read: '/api/applications/getapplicationslist', update: '/api/applications/getapplicationslist2', destroy: '/api/applications/getapplicationslist3' } }), reader: applicationReader, autoSave: true, autoLoad: true, writer: new Ext.data.JsonWriter({ encode: false, listful: false, writeAllFields: false }) }); So, does anyone know what the problem might be and how to solve it. The data returned from my server is Json-formated and seams to be ok {"message":"test","total":2,"applications":[{"ApplicationId":"f82dc920-17e7-45b5-98ab-03416fdf52b2","ApplicationName":"Archivist","UsersCount":6,"RolesCount":3},{"ApplicationId":"054e2e78-e15f-4609-a9b2-81c04aa570c8","ApplicationName":"Test","UsersCount":1,"RolesCount":0}]}

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• c# How to find if two objects are equal

  - by Simon G

  Hi, I'm needing to know the best way to compare two objects and to find out if there equal. I'm overriding both GethashCode and Equals. So a basic class looks like: public class Test { public int Value { get; set; } public string String1 { get; set; } public string String2 { get; set; } public override int GetHashCode() { return Value ^ String1.GetHashCode() ^ String2.GetHashCode(); } public override bool Equals( object obj ) { return GetHashCode() == obj.GetHashCode(); } } So for testing purposes I created two objects: Test t = new Test() { Value = 1, String1 ="One", String2 = "One" }; Test t2 = new Test() { Value = 1, String1 = "Two", String2 = "Two" }; bool areEqual = t.Equals( t2 ); In testing this areEqual returns true event though both objects are different. I realise this is because String1 and String2 are the same value in each object and thus cancels each other out when hashing. Is there a better way off hashing object that the method I have that will resolve my issue?

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• Global NSMutableArray doesn't seem to be holding values

  - by diatrevolo

  I have a Cocos2D iPhone application that requires a set of CGRects overlaid on an image to detect touches within them. "Data" below is a class that holds values parsed from an XML file. "delegateEntries" is a NSMutableArray that contains several "data" objects, pulled from another NSMutableArray called "entries" that lives in the application delegate. For some strange reason, I can get at these values without problems in the init function, but further down the class in question, I try to get at these values, and the application crashes without an error message (as an example, I put in the "ccTouchBegan" method which accessess this data through the "populateFieldsForTouchedItem" method. Can anyone see why these values would not be accessible from other methods? No objects get released until dealloc. Thanks in advance! @synthesize clicked, delegate, data, image, blurImage, normalImage, arrayOfRects, delegateEntries; - (id)initWithTexture:(CCTexture2D *)aTexture { if( (self=[super initWithTexture:aTexture] )) { arrayOfRects = [[NSMutableArray alloc] init]; delegateEntries = [[NSMutableArray alloc] init]; delegate = (InteractivePIAppDelegate *)[[UIApplication sharedApplication] delegate]; delegateEntries = [delegate entries]; data = [delegateEntries objectAtIndex:0]; NSLog(@"Assigning %@", [[delegateEntries objectAtIndex:0] backgroundImage]); NSLog(@"%@ is the string", [[data sections] objectAtIndex:0]); //CGRect rect; NSLog(@"Count of array is %i", [delegateEntries count]); //collect as many items as there are XML entries for(int i=0; i<[delegateEntries count]; i++) { if([[delegateEntries objectAtIndex:i] xPos]) { NSLog(@"Found %i items", i+1); [arrayOfRects addObject:[NSValue valueWithCGRect:CGRectMake([[[delegateEntries objectAtIndex:i] xPos] floatValue], [[[delegateEntries objectAtIndex:i] yPos] floatValue], [[[delegateEntries objectAtIndex:i] xBounds] floatValue], [[[delegateEntries objectAtIndex:i] yBounds] floatValue])]]; } else { NSLog(@"Nothing"); } } //remove the following once the NSMutableArray from above works (legacy) blurImage = [[NSString alloc] initWithString:[data backgroundBlur]]; NSLog(@"5"); normalImage = [[NSString alloc] initWithString:[data backgroundImage]]; clicked = NO; } return self; } And then: - (void)populateFieldsForTouchedItem:(TouchedRect)touchInfo { Data *touchDatum = [[Data alloc] init]; touchDatum = [[self delegateEntries] objectAtIndex:touchInfo.recordNumber]; NSLog(@"Assigning %@", [[[self delegateEntries] objectAtIndex:touchInfo.recordNumber] backgroundImage]); rect = [[arrayOfRects objectAtIndex:touchInfo.recordNumber] CGRectValue]; image = [[NSString alloc] initWithString:[[touchDatum sections] objectAtIndex:0]]; [touchDatum release]; } - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { TouchedRect touchInfo = [self containsTouchLocation:touch]; NSLog(@"Information pertains to %i", touchInfo.recordNumber); if ( !touchInfo.touched && !clicked ) { //needed since the touch location changes when zoomed NSLog(@"NOPE"); return NO; } [self populateFieldsForTouchedItem:touchInfo]; NSLog(@"YEP"); return YES; }

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• Why does "return ERROR" only work with exceptions?

  - by ThreaT

  In the struts.xml I use: <result name="error">error</result> Then in my action I use: addActionError("ERROR RETURNED"); return ERROR; When I submit the form then it just goes to a blank page and does nothing. However, if I FORCE an exception to be thrown in the action then it goes to the error page and shows the ActionError message. So am I doing this wrong? If so, how should I tell struts to show an error page using "if statements" instead of relying solely on expensive try catches? EDIT 1: I'm using struts 2 version: 2.1.8.1 EDIT 2: For example, here is my action code that I'm using to test: String test = ""; int number = 0; try { if (number == 1) { System.out.println("number 1: " + number); test = SUCCESS; } else if (number == 2) { System.out.println("number 2: " + number); addActionError("ERROR RETURNED?"); addActionMessage("TESTTEST"); test = ERROR; } else if (number == 3) { System.out.println("number 3: " + number); addActionError("ERROR RETURNED?"); addActionMessage("TESTTEST"); test = INPUT; } else { System.out.println("number 4: " + number); test = LOGIN; } } catch (Exception e) { addActionError("ERROR RETURNED? " + e); } return test; And here is my JSP code: <s:form action="number_save" method="post"> <s:textfield name="number" label="Enter number" /> </s:form> <s:actionerror /> <s:fielderror /> <s:actionmessage /> EDIT 3: Here is a longer version of my struts.xml: <action name="number" method="numberCreate" class="NumberActionBean"> <result>number.jsp</result> </action> <action name="error"> <result>error.jsp</result> </action> <action name="number_save" method="numberSave" class="NumberActionBean"> <interceptor-ref name="defaultStack"></interceptor-ref> <result name="success" type="redirect">index</result> <result name="input" type="redirect">number</result> <result name="error">error</result> <result name="login" type="redirect">login</result> <result name="none">number</result> </action> EDIT 4: My error.jsp is simply a <s:actionerror /> tag with the general taglibs and html tags...

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• How do I effectively store a connection string in machine.config only?

  - by Scott Bedwell

  We are moving to an environment with multiple engines of MS SQL running on the same server (a test engine and a production engine). We also have separate test and production web servers, and would like for our asp.net applications to "magically" use the test database engine on the test web server and the production database engine on the production web servers. We would like to store the connection strings in machine.config rather than in web.config, but when we put it in machine.config, visual studio's IDE (particularly with datasets) does not recognize that the machine.config contains the connection. Does anyone know of a solution for displaying these machine.config connection strings in visual studio, or of a different solution that would accommodate for this? Thanks.

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• Alter a function as a parameter before evaluating it?

  - by Shane

  Is there any way, given a function passed as a parameter, to alter its input parameter string before evaluating it? Here's pseudo-code for what I'm hoping to achieve: test.func <- function(a, b) { # here I want to alter the b expression before evaluating it: b(..., val1=a) } Given the function call passed to b, I want to add in a as another parameter without needing to always specify ... in the b call. So the output from this test.func call should be: test.func(a="a", b=paste(1, 2)) "1" "2" "a"

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• TTPhotoViewController: How to show small images

  - by Sali

  Hi, I posted this question on Three20 google group but did not get any response. So I thought I try this forum. I am using TTPhotoViewController to display photos. I am following sample code given in Three20 sample project: TTCatalog/PhotoTest1Controller.m. In my case some of the images are less than (320,480). The problem which I am facing is that when my image is 200*300 then TTPhotoViewController re-sizes it to full screen on load which distorts the image. I was wondering if there is a way to tell TTPhotoViewController to display image in its actual size and not to resize it. The only thing which I have changed is viewDidLoad function in PhotoTest1Controller.m. (void)viewDidLoad { self.photoSource = [[[MockPhotoSource alloc] initWithType:MockPhotoSourceNormal title:@"Photo 1" photos:[NSArray arrayWithObjects:[[[MockPhoto alloc] initWithURL:@"http://test/test.jpg" smallURL:@"http://test/test.jpg" size:CGSizeMake(200, 300) caption:@"This is a caption."] autorelease], nil] photos2:nil] autorelease]; } I will appreciate your help. Thanks

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• Fluent NHibernate CheckProperty and Dates

  - by Chris C

  I setup a NUnit test as such: new PersistenceSpecification<MyTable>(_session) .CheckProperty(c => c.ActionDate, DateTime.Now); When I run the test via NUnit I get the following error: SomeNamespace.MapTest: System.ApplicationException : Expected '2/23/2010 11:08:38 AM' but got '2/23/2010 11:08:38 AM' for Property 'ActionDate' The ActionDate field is a datetime field in a SQL 2008 database. I use Auto Mapping and declare the ActionDate as a DateTime property in C#. If I change the test to use DateTime.Today the tests pass. My question is why is the test failing with DateTime.Now? Is NHibernate losing some precision when saving the date to the database and if so how do prevent the lose? Thank you.

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• Magic Method __set() on a Instantiated Object

  - by streetparade

  Ok i have a problem, sorry if i cant explaint it clear but the code speaks for its self. i have a class which generates objects from a given class name; Say we say the class is Modules: public function name($name) { $this->includeModule($name); try { $module = new ReflectionClass($name); $instance = $module->isInstantiable() ? $module->newInstance() : "Err"; $this->addDelegate($instance); } catch(Exception $e) { Modules::Name("Logger")->log($e->getMessage()); } return $this; } The AddDelegate Method: protected function addDelegate($delegate) { $this->aDelegates[] = $delegate; } The __call Method public function __call($methodName, $parameters) { $delegated = false; foreach ($this->aDelegates as $delegate) { if(class_exists(get_class($delegate))) { if(method_exists($delegate,$methodName)) { $method = new ReflectionMethod(get_class($delegate), $methodName); $function = array($delegate, $methodName); return call_user_func_array($function, $parameters); } } } The __get Method public function __get($property) { foreach($this->aDelegates as $delegate) { if ($delegate->$property !== false) { return $delegate->$property; } } } All this works fine expect the function __set public function __set($property,$value) { //print_r($this->aDelegates); foreach($this->aDelegates as $k=>$delegate) { //print_r($k); //print_r($delegate); if (property_exists($delegate, $property)) { $delegate->$property = $value; } } //$this->addDelegate($delegate); print_r($this->aDelegates); } class tester { public function __set($name,$value) { self::$module->name(self::$name)->__set($name,$value); } } Module::test("logger")->log("test"); // this logs, it works echo Module::test("logger")->path; //prints /home/bla/test/ this is also correct But i cant set any value to class log like this Module::tester("logger")->path ="/home/bla/test/log/"; The path property of class logger is public so its not a problem of protected or private property access. How can i solve this issue? I hope i could explain my problem clear.

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• Surely eAsy but I am not able ... JQUERY UI - WIDGET - HEADER

  - by alex

  I was making this simple trial, but can anyone tell me why the distance from the border of DIV to the H2 header is so much ? How can I reduce it ? I don't want space ... Prova WIDGET <link rel="stylesheet" href="jquery-ui-1.8.custom/css/smoothness/jquery-ui-1.8.custom.css" type="text/css"> <link rel="stylesheet" href="jquery-ui-1.8.custom/development-bundle/ui/jquery-ui-1.8.custom.css" type="text/css"> <script src="jquery-ui-1.8.custom/development-bundle/jquery-1.4.2.js" type="text/javascript"></script> <script src="jquery-ui-1.8.custom/js/jquery-ui-1.8.custom.min.js" type="text/javascript"></script> <script type="text/javascript"> $(themify); function themify(){ $("div").addClass("ui-widget ui-widget-content ui-corner-all"); $("input").addClass("ui-button ui-button-text"); $(":header").addClass("ui-widget-header ui-corner-all"); //ui-widget } </script> <style>#test{display:none}</style> <script type="text/javascript"> function rendiVisibile(){ if(document.getElementById("test").style.display = "none"){ $("#test").css({"width":"200px","float":"right","text-align":"center"}); $("#test").show("slide",{},1000); } } </script> </head> <body> <h2>Tentativo widget con DIV</h2> <form action=""> <input type="button" value="Submit" id="pulsante" onclick="rendiVisibile()";><br/></br> <div id="test"> <h2>CIAO</h2> Un saluto </div> </form> </body>

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• How to break from loop by the cancel button in inputbox

  - by yael

  The following VB script check the valid IP by Test function if we get OK from the test function then We break from loop ValidIP=OK If not the inputBox ask the question until ValidIP=OK But sometimes I want to exit from loop by cancel button How to break loop by the cancel button (in order to set the ValidIP as OK) Do Until ValidIP=OK IPrange=InputBox("Enter IP address range",,"172.17.202.1-10,192.9.200.1-100") Test IPrange, strPattern Loop

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• Compile time type determination in C++

  - by dicroce

  A coworker recently showed me some code that he found online. It appears to allow compile time determination of whether a type has an "is a" relationship with another type. I think this is totally awesome, but I have to admit that I'm clueless as to how this actually works. Can anyone explain this to me? template<typename BaseT, typename DerivedT> inline bool isRelated(const DerivedT&) { DerivedT derived(); char test(const BaseT&); // sizeof(test()) == sizeof(char) char (&test(...))[2]; // sizeof(test()) == sizeof(char[2]) struct conversion { enum { exists = (sizeof(test(derived())) == sizeof(char)) }; }; return conversion::exists; } Once this function is defined, you can use it like this: #include <iostream> class base {}; class derived : public base {}; class unrelated {}; int main() { base b; derived d; unrelated u; if( isRelated<base>( b ) ) std::cout << "b is related to base" << std::endl; if( isRelated<base>( d ) ) std::cout << "d is related to base" << std::endl; if( !isRelated<base>( u ) ) std::cout << "u is not related to base" << std::endl; }

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• Is it possible to run NUnit 2.5.3 tests in Gallio?

  - by Allrameest

  When I try to run NUnit tests in resharper I get this: Detected a probable test framework assembly version mismatch. Referenced test frameworks: 'nunit.framework, Version=2.5.3.9345, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77'. Supported test frameworks: 'nunit.framework, Version=2.5.0.0-2.5.2.65535', 'nunit.framework, Version=2.4.8.0-2.4.8.65535'. I use Gallio v3.1 build 397.

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• Multi-line code in PHP interactive shell

  - by Andrei

  I'm learning to use the PHP interactive shell, but I'm having trouble with multi-line code. Using backslashes like in the UNIX shells doesn't seem to work. What am I doing wrong ? php > function test(){\ php { echo "test";\ php { }\ php > test(); PHP Parse error: syntax error, unexpected T_ECHO, expecting T_STRING in php shell code on line 2

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• What's the best way to build software that doesn't require the newest glibc?

  - by ZorbaTHut

  I'm attempting to build a binary package that can be run on multiple Linux distributions. It's currently built on Ubuntu 10.04, but it fails on Ubuntu 8.04 with the following error: ./test: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by ./test) ./test: /usr/lib/libstdc.so.6: version `GLIBC_2.11' not found (required by ./test) What's the preferred way to solve this problem? Is there a way to install an old glibc on a new box and build against it, or do I have to build on an old distribution? And if I build against an old glibc, will it work on a new glibc? Or, alternatively, are there just some handy compiler flags or packages I could install to solve the problem?

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• C++ compiler error on template specialization

  - by user231536

  I would like to specialize a template method for a class C that is itself templated by an int parameter. How do I do this? template <int D=1> class C { static std::string foo () { stringstream ss; ss << D << endl; return ss.str();} }; template <class X> void test() { cout << "This is a test" << endl;} template <> template <int D> void test<C<D> > () {cout << C<D>::foo() << endl;} The specialization for test() fails with "Too many template parameter lists in declaration of void test()".

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• What's the best way to build software to not require the newest glibc?

  - by ZorbaTHut

  I'm attempting to build a binary package that can be run on multiple Linux distributions. It's currently built on Ubuntu 10.04, but it fails on Ubuntu 8.04 with the following error: ./test: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by ./test) ./test: /usr/lib/libstdc.so.6: version `GLIBC_2.11' not found (required by ./test) What's the preferred way to solve this problem? Is there a way to install an old glibc on a new box and build against it, or do I have to build on an old distribution? And if I build against an old glibc, will it work on a new glibc? Or, alternatively, are there just some handy compiler flags or packages I could install to solve the problem?

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• How to intialize a variable from another script in bash?

  - by Zombies

  How can I set my intial variables in a re-usable way? I tried to do this by invoking something like this in my child script: ./init.bash And inside init.bash: prod="false" if [ "$prod" == "prod" ] then RUN_DIR=/home/windsor/.scripts/websites JAVA_DIR=/home/windsor/prog/websitechecker OUT_DIR=/tmp/ DB="prod" else if [ ! -a /tmp/test ] then mkdir /tmp/test fi DB="mydb" OUT_DIR=/tmp/test/ RUN_DIR=/home/windsor/workspaces/bash/websites JAVA_DIR=/home/windsor/workspaces/java/testrun fi cd $RUN_DIR

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• IndexOf method returns 0 when it should had return -1 in C# / Java

  - by jcgarciam

  A friend of mine came to me with this strange behavior which i can't explain, any insight view would be appreciated. Im running VS 2005 (C# 2.0), the following code show the behavior int rr = "test".IndexOf(""); Console.WriteLine(rr.ToString()); the above code, print "0" which clearly show it should have return -1 This also happen in Java where the following Class show the behavior: public class Test{ public static void main(String[] args){ System.out.println("Result->"+("test".indexOf(""))); } } Im running Java 1.6.0_17

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• Calculating Growth-Rates by applying log-differences

  - by mropa

  I am trying to transform my data.frame by calculating the log-differences of each column and controlling for the rows id. So basically I like to calculate the growth rates for each id's variable. So here is a random df with an id column, a time period colum p and three variable columns: df <- data.frame (id = c("a","a","a","c","c","d","d","d","d","d"), p = c(1,2,3,1,2,1,2,3,4,5), var1 = rnorm(10, 5), var2 = rnorm(10, 5), var3 = rnorm(10, 5) ) df id p var1 var2 var3 1 a 1 5.375797 4.110324 5.773473 2 a 2 4.574700 6.541862 6.116153 3 a 3 3.029428 4.931924 5.631847 4 c 1 5.375855 4.181034 5.756510 5 c 2 5.067131 6.053009 6.746442 6 d 1 3.846438 4.515268 6.920389 7 d 2 4.910792 5.525340 4.625942 8 d 3 6.410238 5.138040 7.404533 9 d 4 4.637469 3.522542 3.661668 10 d 5 5.519138 4.599829 5.566892 Now I have written a function which does exactly what I want BUT I had to take a detour which is possibly unnecessary and can be removed. However, somehow I am not able to locate the shortcut. Here is the function and the output for the posted data frame: fct.logDiff <- function (df) { df.log <- dlply (df, "code", function(x) data.frame (p = x$p, log(x[, -c(1,2)]))) list.nalog <- llply (df.log, function(x) data.frame (p = x$p, rbind(NA, sapply(x[,-1], diff)))) ldply (list.nalog, data.frame) } fct.logDiff(df) id p var1 var2 var3 1 a 1 NA NA NA 2 a 2 -0.16136569 0.46472004 0.05765945 3 a 3 -0.41216720 -0.28249264 -0.08249587 4 c 1 NA NA NA 5 c 2 -0.05914281 0.36999681 0.15868378 6 d 1 NA NA NA 7 d 2 0.24428771 0.20188025 -0.40279188 8 d 3 0.26646102 -0.07267311 0.47041227 9 d 4 -0.32372771 -0.37748866 -0.70417351 10 d 5 0.17405309 0.26683625 0.41891802 The trouble is due to the added NA-rows. I don't want to collapse the frame and reduce it, which would be automatically done by the diff() function. So I had 10 rows in my original frame and am keeping the same amount of rows after the transformation. In order to keep the same length I had to add some NAs. I have taken a detour by transforming the data.frame into a list, add the NAs, and afterwards transform the list back into a data.frame. That looks tedious. Any ideas to avoid the data.frame-list-data.frame class transformation and optimize the function?

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• What is the most efficient functional version of the following imperative code?

  - by justin.r.s.

  I'm learning Scala and I want to know the best way of expressing this imperative pattern using Scala's functional programming capabilities. def f(l: List[Int]): Boolean = { for (e <- l) { if (test(e)) return true } } return false } The best I can come up with is along the lines of: l map { e => test(e) } contains true But this is less efficient since it calls test() on each element, whereas the imperative version stops on the first element that satisfies test(). Is there a more idiomatic functional programming technique I can use to the same effect? The imperative version seems awkward in Scala.

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• Hyperlink for each record

  - by shantanuo

  I need a link for each depotname that will bring up a child window with the details of the last 10 backup status. while($data=mysql_fetch_array($res)) { if(is_null($depot_array) || !in_array($data['depotname'],$depot_array )) { $depot_array[$r]=$data['depotname']; if($data['SCP_status'] <> 'success') { echo "<tr id='fail'>"; The results of the following query should be displayed in a child window. select * from backup_log where depotname = $data['depotname']

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• Why this works (Templates, SFINAE). C++

  - by atch

  Hi guys, reffering to yesterday's post, this woke me up this morning. Why this actually works? As long as the fnc test is concerned this fnc has no body so how can perform anything? Why and how this works? I'm REALLY interested to see your answers. template<typename T> class IsClassT { private: typedef char One; typedef struct { char a[2]; } Two; template<typename C> static One test(int C::*); //NO BODY HERE template<typename C> static Two test(…); //NOR HERE public: enum { Yes = sizeof(IsClassT<T>::test<T>(0)) == 1 }; enum { No = !Yes }; }; Thanks in advance with help to understand this very interesting fenomena.

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