Search Results

Search found 13829 results on 554 pages for 'temporary objects'.

Page 316/554 | < Previous Page | 312 313 314 315 316 317 318 319 320 321 322 323  | Next Page >

• How do I query for this in Django?

  - by alex

  | random_code | varchar(200) | YES | UNI | NULL | | MyTable.objects.filter(random_code = None) Is this correct? Will this SELECT where there is no random code set? Above is my table.

  Read the article

• How hard is it to determine what procedures/functions no longer compile?

  - by Dave

  In sql server how difficult would it be to determine what procedures/functions no longer compile? In other words, if I scripted out alter statements for all procedures and functions in a database, I'd like to know which of these statements are going to fail? I've been working on cleaning up a database I've inherited which has gone through years of changes and I'd like to what objects are going to raise errors when something tries to execute it.

  Read the article

• CouchDB: How to change view function via javascript?

  - by osti

  Hello Guys, I am playing around with CouchDB to test if it is "possible" [1] to store scientific data (simulated and experimental raw data + metadata). A big pro is the schema-less approach of CouchDB: we have to be very flexible with the metadata, as the set of parameters changes very often. Up to now I have some code to feed raw data, plots (both as attachments), and hierarchical metadata (as JSON) into CouchDB documents, and have written some prototype Javascript for filtering and showing. But the filtering is done on the client side (a.k.a. browser): The map function simply returns everything. How could I change the (or push a second) map function of a specific _design-document with simple browser-JS? I do not think that a temporary view would yield any performance gain... Thanks for your time and answers. [1]: of course it is possible, but is it also useful? feasible? reasonable?

  Read the article

• jQuery Fade a div off the screen

  - by Scott B

  In my app, I have a temporary div that is shown each time the app is saved (see markup below). I'm using jQuery 1.4.2 and would like to know the command that will fade this div off the screen after 3 seconds... <script src="../wp-content/themes/mytheme/jquery-1.4.2.min.js" type="text/javascript"></script> if ($_REQUEST['saved']) echo '<div id="message" class="updated fade"><p>'.$themename.' settings saved.</strong></p></div>';

  Read the article

• GC Rules : how to findout a java object is eligible for garbage collection or not

  - by JavaUser

  Hi , Anyone point me the set of defined rules to find out the eligibility for garbage collection of java objects and a simple example for that .

  Read the article

• Java reference storage question

  - by aab

  In java, when you pass an object to a method as a parameter, it is actually passing a reference, or a pointer, to that object because objects in Java are references. Inside the function, it has a pointer to that object which is a location in memory. I am wondering where this pointer lives in memory? Is a new memory location created once inside the function to hold this reference?

  Read the article

• How to check whether an object has a specific method or not

  - by Ghommey

  Hey, I want to use a method of an object. Like $myObject->helloWorld(). However there are a couple of methods so I loop through an array of method names and call the method like this: my $methodName ="helloWorld"; $myObject->$methodNames; This works quite nice but some objects don't have all methods. How can I tell whether $myObject has a method called helloWorld or not?

  Read the article

• Is it worth setting pointers to NULL in a destructor?

  - by Rob

  Imagine I have a class that allocates memory (forget about smart pointers for now): class Foo { public: Foo() : bar(new Bar) { } ~Foo() { delete bar; } void doSomething() { bar->doSomething(); } private: Bar* bar; }; As well as deleting the objects in the destructor is it also worth setting them to NULL? I'm assuming that setting the pointer to NULL in the destructor of the example above is a waste of time.

  Read the article

• How do I add animation to an iPhone app?

  - by james p

  So I came from a Flash background where I can animate in timeline. I've completed the Beginning iPhone Development book and just realized that I still don't know how to get an animation in. I'm guessing I need to import png sequences? Can anyone point me to an appropriate place to learn more about this topic? I want to make a game and my game objects need to animate. Thanks in advance!!

  Read the article

• How do I register a marker interface so it is visible in Plones's ZMI?

  - by joeforker

  I would like to register a marker interface so I can add it to objects in the ZMI. My product's configure.zcml contains: <interface interface=".interfaces.IMarkerInterface" /> and, after reinstalling, the interface shows up in the list of available interfaces. But if I try to add it to an object in the ZMI I get a ComponentLookupError. What's missing?

  Read the article

• mongodb java driver - raw command?

  - by Scott

  Is it possible to execute raw commands as javascript through the Java driver for MongoDB? I'm tired of wrapping everything in Java objects using Rhino, and would happily sacrifice performance for the convenience of passing javascript directly through to the DB. If not, I can always use sleepymongoose or something, but I don't really want to add yet another language (python) to the stack at this point. Any insights are appreciated.

  Read the article

• Should I reuse Points and Rectangles or create new ones?

  - by Newtang

  In a method that gets called frequently, like a painting event, is it more efficient to reuse Point and Rectangle Objects (for specifying locations and bounds), or should I create new ones.

  Read the article

• Where namespace does operator<< (stream) go to?

  - by aaa

  If I have have some overloaded ostream operators, defined for library local objects, is its okay for them to go to std namespace? If I do not declare them in std namespace, then I must use using ns:: operator <<. As a possible follow-up question, are there any operators which should go to standard or global namespace?

  Read the article

• difference between erase and remove/remove_if algorithms?

  - by Eric

  What is really the difference between the algorithms remove and remove_if and the member function erase? Does both of them result in a call to the removed objects destructor?

  Read the article

• C++ Reference of vector

  - by void

  Hello, class Refvect { public: vector<int> &refv; Refvect(int t, vector<int> &refv = vector<int>()) : refv(refv) { }; void operator()() { refv.clear(); } }; int main () { Refvect r(0); r(); } With Visual Studio 2010, this gives me an error : "vector iterators incompatible" at the execution, but I don't understand why (but I can insert elements in refv without any problem). The temporary object vector() lives as long as the reference, no?

  Read the article

• C/C++ opaque pointer library

  - by aaa

  hello Is there library/header already written to manage C++ objects from C using opaque pointers/handles? I can write one myself, but I would rather use already made solution, especially if it has fortran bindings. Thanks

  Read the article

• C++ STL-conforming Allocators

  - by myahya

  What allocators are available out there for use with STL when dealing with small objects. I have already tried playing with pool allocators from Boost, but got no performance improvement (actually, in some cases there was considerable degradation).

  Read the article

• Events Internals: In .net how are Events represented internally?

  - by JeeZ

  Hi All, I have a basic doubt. Internally how are events represented as methods or as (fields)objects. If event is a field then how one can still contain events in the interface definition. Thanks JeeZ

  Read the article

• What influences the timing of a GC?

  - by dotnetdev

  I know it is not possible to know when a gc occurs, but there are factors that will tell you how often/when it may occur. What factors are these? One is how many objects are created, etc. Thanks

  Read the article

• Convert Nulls to Empty String in an object.

  - by John

  What is the easiest way to take an objects and convert any of its values from null to string.empty ? I was thinking about a routine that I can pass in any object, but I am not sure how to loop through all the values.

  Read the article

• Where should I declare a list of 5,000+ words?

  - by user647362

  I am writing a game in python in which I must periodically pull a random word from a list of words. When I prototyped my game I declared a word_list = ['cat','dog','rat','house'] of ten words at the top of one of my modules. I then use choice(word_list) to get a random word. However, I must must change this temporary hack into something more elegant because I need to increase the size of the word list to 5,000+ words. If I do this in my current module it will look ridiculous. Should I put all of these words in a flat txt file, and then read from that file as I need words? If so, how would I best do that? Put each word an a separate line and then read one random line? I'm not sure what the most efficient way is.

  Read the article

• JQuery - Extend and Access Superclass

  - by Steve

  Is there a way to access the super object when extending objects using $.extend? I would like to extend an object, override a method, but call the overridden superclass method in the subclass method.

  Read the article

• Hadoop: Mapping binary files

  - by restrictedinfinity

  Typically in a the input file is capable of being partially read and processed by Mapper function (as in text files). Is there anything that can be done to handle binaries (say images, serialized objects) which would require all the blocks to be on same host, before the processing can start.

  Read the article

• Are there any data-binding solution that works in C++ and GWT and supports structures polymorphism?

  - by user116854

  I expect it should share a common description, like XmlSchema or IDL and should generate classes for target language. I found Thrift and it's really nice solution, but it doesn't support structures polymorphism. I would like to have collections of base class objects, where I could place instances of subclasses, serialize this and deserialize at the opposite side. Some mechanism of polymorphic behavior support, like Visitor, would be a perfect. Does anybody know something suitable for these requirements?

  Read the article

• LINQ Query with 3 levels

  - by BahaiResearch.com

  I have a business object structured like this: Country has States, State has Cities So Country[2].States[7].Cities[5].Name would be New York Ok, I need to get a list of all the Country objects which have at least 1 City.IsNice == true How do I get that?

  Read the article

< Previous Page | 312 313 314 315 316 317 318 319 320 321 322 323  | Next Page >