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• behaviour of the implicit copy constructor / assignment operator

  - by Tobias Langner

  Hello, I have a question regarding the C++ Standard. Suppose you have a base class with user defined copy constructor and assignment operator. The derived class uses the implicit one generated by the compiler. Does copying / assignment of the derived class call the user defined copy constructor / assignment operator? Or do you need to implement user defined versions that call the base class? Thank you for your help.

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• add a decorate function to a class

  - by wiso

  I have a decorated function (simplified version): class Memoize: def __init__(self, function): self.function = function self.memoized = {} def __call__(self, *args, **kwds): hash = args try: return self.memoized[hash] except KeyError: self.memoized[hash] = self.function(*args) return self.memoized[hash] @Memoize def _DrawPlot(self, options): do something... now I want to add this method to a pre-esisting class. ROOT.TChain.DrawPlot = _DrawPlot when I call this method: chain = TChain() chain.DrawPlot(opts) I got: self.memoized[hash] = self.function(*args) TypeError: _DrawPlot() takes exactly 2 arguments (1 given) why doesn't it propagate self?

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• how to use ldap_sasl_bind_s() with SSL, DN, password (no client cert)

  - by Steve

  I have ldap_sasl_bind_s() working fine with SSL and client cert (without DN and password) from 'C' windows program. When I call ldap_sasl_bind_s() using SSL, DN and password (no client cert) it throws null pointer exception. Should this work or should I be using another api call?

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• How do I create a custom loop in wordpress that excludes categories listed in theme options

  - by mattloak

  I have a custom loop that excludes categories using this code: query_posts(array('category__not_in' => array(2,6))); Instead of specifying the categories to exclude in the code, I'd like to be able to set the option in my custom theme options menu. The code to call the option is get_option('ex_cats');. How do I call this in my query_posts statement?

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• Disable logging during manage.py test?

  - by Eric Palakovich Carr

  I utilize the standard python logging module. When I call python manage.py test I'd like to disable logging before all the tests are ran. Is there a signal or some other kind of hook I could use to call logging.disable? Or is there some other way to disable logging when python manage.py test is ran?

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• Synchronous database reads inside IHttpAsyncHandler

  - by sayao

  On asp.net if i call a synchronous database query inside an IHttpAsyncHandler with delegate.BeginInvoke, would it still release the asp.net worker thread while reading the database? For example, this post: http://madskristensen.net/post/How-to-use-the-IHttpAsyncHandler-in-ASPNET.aspx If i put a synchronous database call inside ServeContent, would the request still happen asynchronously?

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• Poll the Server with Ajax and Dojo

  - by mickthomposn

  I'm using dojo.xhrPost to sent Ajax Requests The call is wrapped by a function sendRequest() I've now to continuously (every 3sec) send the same ajax Post to the server How can I implement a Server Poll with Dojo? I basically need to call sendRequest() every 3 secs

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• match strings in python

  - by mesun

  Write a function, called constrainedMatchPair which takes three arguments: a tuple representing starting points for the first substring, a tuple representing starting points for the second substring, and the length of the first substring. The function should return a tuple of all members (call it n) of the first tuple for which there is an element in the second tuple (call it k) such that n+m+1 = k, where m is the length of the first substring. Complete the definition def constrainedMatchPair(firstMatch,secondMatch,length):

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• code to identify the number

  - by [email protected]

  Hi All, I got one problem while doing one TAPI application based project in C#. I'm using ITAPI3.dll My problem is.. i'm not getting incoming call information. To get the incoming call information, i'm using the getcallinfo function, but it is showing empty message.

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• Ruby: Dynamically calling available methods raising undefined method (metaprogramming)

  - by user94154

  I have an Activerecord object called Foo: Foo.attribute_names.each do |attribute| puts Foo.find(:all)[0].method(attribute.to_sym).call end Here I'm calling all attributes on this model (ie, querying for each column value). However, sometimes, I'll get an undefined method error. How can ActiveRecord::Base#attribute_names return an attribute name that when converted into its own method call, raises an undefined method error? Thank

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• Multi-property "transactions" in Core Data / NSManagedObject / NSFetchedResultsController?

  - by Martijn Thé

  Hi, Is it possible to set multiple properties of an NSManagedObject and have the NSFetchedResultsController call controllerDidChangeContent: only once? In other words, is it possible to say something like: [managedObject beginChanges]; [managedObject setPropertyA:@"Foo"]; [managedObject setPropertyB:@"Bar"]; [managedObject commitChanges]; and then have the NSFetchedResultsController call controllerDidChangeContent: (and the other methods) only one time? Thanks!

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• Delegates And Cross Thread Exception

  - by Neo

  Whenever i am updating UI in windows form using delegate it gives me cross thread exception why it is happening like this? is there new thread started for each delegate call ? void Port_DataReceived(object sender, SerialDataReceivedEventArgs e) { //this call delegate to display data clsConnect(statusMsg); } protected void displayResponse(string resp) { //here cross thread exception occur if directly set to lblMsgResp.Text="Test"; if (lblMsgResp.InvokeRequired) { lblMsgResp.Invoke(new MethodInvoker(delegate { lblMsgResp.Text = resp; })); } }

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• How can I tell if a filehandle is empty in Perl?

  - by joe

  For example: open (PS , " tail -n 1 $file | grep win " ); I want to find whether the file handle is empty or not.

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• calling c function from assembly

  - by void

  I'm trying to use a function in assembly in a C project, the function is supposed to call a libc function let's say printf() but I keep getting a segmentation fault. In the .c file I have the declaration of the function let's say int do_shit_in_asm() In the .asm file I have .extern printf .section .data printtext: .ascii "test" .section .text .global do_shit_in_asm .type do_shit_in_asm, @function do_shit_in_asm: pushl %ebp movl %esp, %ebp push printtext call printf movl %ebp, %esp pop %ebp ret Any pointers would be appreciated. as func.asm -o func.o gcc prog.c func.o -o prog

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• How can I use jquery to display updates when I detect them in my code behind file?

  - by Dan

  I have an asp.net application and in the UI I have a jquery plugin called growel. When I detect that someone have changed their account (code behind) I need to call the jquery plugin to display but this is on the client side. But how is this possible, I cant call jquery from code behind code (C#), has anyone a workaround or am i missing something.

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• How can I write this as a JavaScript function?

  - by Haluk

  I have the following code snippet embedded into some of my divs so when those divs get clicked a certain radio button gets checked. onclick="document.g1.city[0].checked=true;" However I would like to convert the above call to a function call like below: onclick="checkRadioButton(city[0]);" And the function will be something like this function checkRadioButton(input){ document.g1.input.checked=true; } Is there a way I can accomplish this?

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• Dispose a Web Service Proxy class?

  - by Matt

  When you create and use a Web Service proxy class in the ASP.Net framework, the class ultimately inherits from Component, which implements IDisposable. I have never seen one example online where people dispose of a web proxy class, but was wondering if it really needs to be done. When I call only one method, I normally wrap it in a using statement, but if I have a need to call it several times throughout the page, I might end up using the same instance, and just wondered what the ramifications are of not disposing it.

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• Mac OS X / Open terminal with specified windows

  - by xpepermint

  Is it possible to open a terminal window with 3 tabs. Each tab should have different path. Example: Tab1: /etc Tab2: /bin Tab3: /www/ tail -f file.txt

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• What's the difference between these two calls to a function taking a collection of structural types?

  - by James Moore

  Why does the call to fn(Iterator("foo") compile, but the call to fn(fooIterator) fail with an error "type mismatch; found : Iterator[java.lang.String] required: scala.Iterator[com.banshee.Qx.HasLength]" object Qx { type HasLength = {def length: Int} def fn(xs: Iterator[HasLength]) = 3 var tn = fn(Iterator("foo")) var fooIterator = Iterator("foo") var tnFails = fn(fooIterator) //doesn't compile } Aren't they the same thing?

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• ASP.NET: how to get a reference to page "B" from page "A" codebehind?

  - by Keith Myers

  I'm trying to call ScriptManager.RegisterStartupScript from page "A" so that when page "B" loads it displays an alert, but can't figure out how to get a reference to page "B" to satisfy the Control argument in the method call. I figure there's got to be something similar to Page.FindControl() that does this, but I'm stuck...

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• Calling webservice with the generated xml in Java

  - by engin

  Hi, I need to call a very complex service (It's a HL7 service) it's taking a lot of unnecessary information. To call from java I need to write all those information and its very time consuming. I have sample XMLs, they have been filled with those unnecessary information, I just need to change 1 parameter and send it. How can I use that already generated XML? Thanks,

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• Anyone have experience developing with ESQL/C for INFORMIX-SQL?

  - by Frank Developer

  Does anyone have experience developing with ESQL/C for INFORMIX-SQL, as in calling C funcs within "Perform" screen generator and "ACE" report writer? I have ISQL without ESQL/C. I experimented compiling a perform screen, where in the instructions section I put "ON BEGINNING CALL userfunc() END" and although I don't have ESQL/C, the Perform screen successfully compiled without errors!.. Apparently, the compiler didn't reject the C call even though there's no ESQL/C or C program linked.

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• Can I prevent future developers from making an object constructable?

  - by mousey

  you have a class A, where you set ctor to be private, so a client can't call "A a;" to create obj on stack. But someday another developer add a new ctor: "A(int)" and try to call "A a(1);" inside main(). So this will create a obj on stack. How do you prevent that?

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• android Convert phone number in International Format

  - by Arutha

  I'd like to know whether it's possible to have phone numbers converted into international format when a call is outgoing. For instance, if a french user (sorry it's the only format i know i won't make a mistake :-) try to call with the national format : 01.47.12.34.56 then a method will convert it into international format like this : +33.1.47.12.34.56 I've looked into the doc of the PhoneNumberUtils but i don't know if there is a method doing what i want.

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• Integration Services Throws an Error Reading Access 2007 Table

  - by Eric Flamm

  [Participant Table [1994]] Error: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "I:\My Documents\Flamm Consulting\Migrations.accdb" failed with error code 0xC0209303. There may be error messages posted before this with more information on why the AcquireConnection method call failed. Frankly, I'm confused about how SSIS should connect to Access 2007 - the UI just isn't very friendly - there's no file browser, for example. I'm wondering if there's something wrong with my install - missing drivers, etc.

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