Search Results

Search found 11306 results on 453 pages for 'methods'.

Page 269/453 | < Previous Page | 265 266 267 268 269 270 271 272 273 274 275 276  | Next Page >

• Stream a file to the HTTP response in Pylons

  - by Evgeny

  I have a Pylons controller action that needs to return a file to the client. (The file is outside the web root, so I can't just link directly to it.) The simplest way is, of course, this: with open(filepath, 'rb') as f: response.write(f.read()) That works, but it's obviously inefficient for large files. What's the best way to do this? I haven't been able to find any convenient methods in Pylons to stream the contents of the file. Do I really have to write the code to read a chunk at a time myself from scratch?

  Read the article

• Sorting array containing strings in objective c

  - by jakob

  Hello experts! I have an array named 'names' with strings looking like this: ["name_23_something", "name_25_something", "name_2_something"]; Now I would like to sort this array in ascending order so it looks like this: ["name_25_something", "name_23_something", "name_2_something"]; I guess that should start of with extracting the numbers since I want that the sorting is done by them: for(NSString *name in arr) { NSArray *nameSegments = [name componentsSeparatedByString:@"_"]; NSLog("number: %@", (NSString*)[nameSegments objectAtIndex:1]); } I'm thinking of creating a dictionary with the keys but I'm not sure if that is the correct objective-c way, maybe there some some methods I could use instead? Could you please me with some tips or example code how this sorting should be done in a proper way. Thank you

  Read the article

• CommunicationException in WCF

  - by user343159

  Hi I have a problem with a WCF Service I've just created. This was working yesterday but for some reason it's just stopped working. One of my WCF methods returns an array of an Entity Framework entity, like this: public BranchContactDetail[] GetClosestBranches(string postcode, int howManyBranches) { GeoLocation geoLocation = GetLocationFromPostcode(postcode); Location location = new Location(geoLocation.Latitude, geoLocation.Longitude); using (BranchDirectoryEntities entities = new BranchDirectoryEntities()) { var branchesInOrder = entities.BranchContactDetails .Where(b => b.latitude.HasValue && b.longitude.HasValue ) .OrderBy(b => location.DistanceFrom(b.latitude, b.longitude)) .Take(howManyBranches) .ToArray(); return branchesInOrder; } } ...and, as I say, this was working fine yesterday. Now I'm getting a "The underlying connection was closed: The connection was closed unexpectedly." I've hunted all over the web but no-one seems to know the answer. Anyone shed any light on this issue? Regards, Mark

  Read the article

• What exactly is a property in Objective C ? What is the difference between a property ans an instance variable?

  - by tek3

  I am very much confused between instance variables and property. I have read number of posts regarding this but still i am not clear about it. I am from JAVA background and what i infer from objective C documentation is that a property is similar to JAVA BEAN CLASS (one having getter and setter of instance varibles). A property can accessed from other classes through its getter and setter methods while an instance variable is private and cannot be accessed from other classes. Am i right in thinking in this direction ?

  Read the article

• [wxWidgets] How to store wxImage into database, using C++?

  - by Thomas Matthews

  I have some wxImages and I would like to store them into a BLOB (Binary Large OBject) field in a MySQL database. There are no methods in wxImage nor wxBitmap for obtaining the binary data as an array of unsigned char so I can load into the database. My current workaround is to write the image to a temporary file, then load the BLOB field directly from the file. Is there a more efficient method to load and store a wxImage object into a MySQL BLOB field? I am using MySql C++ connector 1.05, MS Visual Studio 2008, wxWidgets and C++.

  Read the article

• Looking for how-to use UIGraphicsSetPDFContextURLForRect on iOS or Cocoa

  - by user1676332

  I'm playing to manipulate PDF on iOS (display but also and mostly generation). I wish to embed rectangular areas which act as "external" links (URLs like http://host.tld/path/file). Do you know where I can find an example(s) of how to use the UIGraphicsSetPDFContextURLForRect function? I find absolutly nothing on Internet. If I understand well, the only requirement is that the current graphic context should be PDF "type" and I think I respect this since, upstream, I call UIGraphicsPushContext why my PDF context as parameter (this was anyway required for methods like drawAtPoint: that I use also with success). I do not think it is important but just in case I specify that this DOES NOT take place in the drawRect: of a View subclass. You're quite right to say me unequivocally that I have "all wrong". The graphical environment is so sophisticated and rich in iOS that I assume to have not assimilated more than 1 or 2% for now. Thank you in advance.

  Read the article

• Implementing "Generator" support in a custom language

  - by Roger Alsing

  I've got a bit of fettish for language design and I'm currently playing around with my own hobby language. (http://rogeralsing.com/2010/04/14/playing-with-plastic/) One thing that really makes my mind bleed is "generators" and the "yield" keyword. I know C# uses AST transformation to transform enumerator methods into statemachines. But how does it work in other languages? Is there any way to get generator support in a language w/o AST transformation? e.g. Does languages like Python or Ruby resort to AST transformations to solve this to? (The question is how generators are implemented under the hood in different languages, not how to write a generator in one of them)

  Read the article

• how to deal a constructor with an array in Perl

  - by superstar

  whats the difference between these two 'new' constructors in perl? 1) sub new { my $class = shift; my $self = {}; $self->{firstName} = undef; $self->{lastName} = undef; $self->{PEERS} = []; bless ($self, $class); return $self; } 2) sub new { my $class = shift; my $self = { _firstName => shift, _lastName => shift, _ssn => shift, }; bless $self, $class; return $self; } I am using the 2nd one so far, but i need to implement the arrays in perl? can you suggest a way to do it with the 2nd 'new' constructor and how can we use get and set methods on those array variables?

  Read the article

• Mapping to a JSON method with url-pattern

  - by Brian

  I'm creating a Spring MVC application that will have a controller with 'RequestMapping'-annotated methods, including a JSON method. It currently has static content that resides in webapps/static, and the app itself resides in webapps/myapp. I assume that Catalina's default servlet is handling the static content, and my *.htm url-pattern in web.xml is returning the request for my JSP page, but I haven't been able to get the JSON method to be called. How do I write the url-pattern in the servlet mapping to do so? Using /* has not worked; it prevents the app from being accessed at all. Is there anything else to be aware of? EDIT: The url-pattern '/' appears to allow the JSON request through, because a 406 error is returned. What then would need to be modified to allow JSON to be returned?

  Read the article

• Rails: Skinny Controller vs. Fat Model, or should I make my Controller Anorexic?

  - by Nick Gorbikoff

  I know similar questions have been answered before - such as: Where should logic go, where to do certain tasks, etc. But I have a more specific question - How far should I take this axiom: "keep your controller skinny, make your model fat!" Here is an example: For instance let's say I have multiple source of verification data. A good example would be a VIN number - I can verify it against, manufacturers data source, DMV's data source, also my local databases - to see what I have on record. So I have a model called Vin and vins_controller. Inside the model I have 5 methods: check_against_local_db, check_against_dmv, check_against_car_maker_1, check_against_car_maker_2, etc. In my controller keeping with the REST, in action show - I have a simple case statement which looks at the params[:source], and based on source specified - will call specific check method. Now here is the question: Should I leave the logic that governs which data source to call in controller or should I move it to model and then in controller just do something like check_vin(source, vin)? Should I make my controller anorexic?

  Read the article

• If XmlException.SourceUri is read-only, what good is it?

  - by East of Nowhere

  I have a couple places in my code where it throwing a new System.Xml.XmlException seems appropriate. I could just do throw new XmlException("Your XML sucks go fix it then try again."); But I think it's better to take advantage whenever possible of members particular to the exception class (otherwise ya might as well throw a plain ol' Exception every time). SourceUri and LineNumber would be helpful, but they only have get methods, there's no way I can assign a value to them! There's only 3 constructor overloads and none of them have parameters for those members either; I can only initialize Message, nothing else. There has got to be some way to populate those data members with values, otherwise why does XmlException bother with them? I suppose I could make a new class that inherits XmlException and write a new constructor that initializes SourceUri etc. but still, there must be a way to just use XmlException. Right?

  Read the article

• How to: WCF XML-RPC client?

  - by mr.b

  I have built my own little custom XML-RPC server, and since I'd like to keep things simple, on both server and client side, what I would like to accomplish is to create a simplest possible client (in C# preferably) using WCF. Let's say that Contract for service exposed via XML-RPC is as follows: [ServiceContract] public interface IContract { [OperationContract(Action="Ping")] string Ping(); // server returns back string "Pong" [OperationContract(Action="Echo")] string Echo(string message); // server echoes back whatever message is } So, there are two example methods, one without any arguments, and another with simple string argument, both returning strings (just for sake of example). Service is exposed via http. Aaand, what's next? :) P.S. I have tried googling around for samples and similar, but all that I could come up with are some blog-related samples that use existing (and very big/numerous) classes, which implement appropriate IContract (or IBlogger) interfaces, so that most of what I am interested is hidden below several layers of abstraction...

  Read the article

• lwjgl 101: How can I write applets?

  - by Vuntic

  I have a working app in lwjgl. It doesn't do much yet; I've just started, but it does compile and run like it's supposed to. I want to make it into an applet. I've followed the guide here, and I have an applet that runs nicely and displays text and such in the applet area and can access the functions of lwjgl (like Sys.alert), but I can't figure out how to get opengl to actually render. I've tried extending an AWTGLCanvas and calling this.add(myAWTGLCanvas), where this is the Applet that I'm using, but... nothing. The initGL() and paintGL() methods never get called. I wonder if I'm supposed to be doing something with Display, but that's not for applets, right? Help? Also: This counts as a "beginner" question, right? Edit: Here's a simplified version of what I have.

  Read the article

• LINQ to SQL Web Application Best Practices

  - by derek

  In my experience building web applications, I've always used a n-tier approach. A DAL that gets data from the db and populates the objects, and BLL that gets objects from the DAL and performs any business logic required on them, and the website that gets it's display data from the BLL. I've recently started learning LINQ, and most of the examples show the queries occurring right from the Web Application code-behinds(it's possible that I've only seen overly simplified examples). In the n-tier architectures, this was always seen as a big no-no. I'm a bit unsure of how to architect a new Web Application. I've been using the Server Explorer and dbml designer in VS2008 to create the dbml and object relationships. It seems a little unclear to me if the dbml would be considered the DAL layer, if the website should call methods within a BLL, which then would do the LINQ queries, etc. What are some general architecture best practices, or approaches to creating a Web Application solution using LINQ to SQL?

  Read the article

• Communication between Page and User Controls

  - by Narmatha Balasundaram

  I have a main page that has multiple user controls on it. All the user controls have static text and some data to be retrieved from the DB. The aysnchronous DB call is clubbed at the page level and one call is made to avoid multiple calls (in the different user controls) to get the same data. I want the page and user controls to load initially with the static text and later refresh the contents obtained from the server. To sum it all up, Page Loads = Asyn calls fired on page load = Data received back from the server (XML/text/whatever) = User controls to load with this data using AJAX. What methods do I have to let the user controls know that I have the data from the server and they need to update with this data?

  Read the article

• Creating method templates in Eclipse

  - by stevebot

  Is there any way to do the following in eclipse? Have eclipse template a method like the following public void test(){ // CREATE MOCKS // CREATE EXPECTATIONS // REPLAY MOCKS // VERIFY MOCKS } so then I could presumably just use intellisense and select an option like "createtest" and have it stub out a method with the comments similar to the above?My problem is that often myself and other developers I know forgot all the steps we need to follow to do what we dub as a valid unit test for our application. If I could template our test methods to stub out the comments above it would be a big help.

  Read the article

• How to mask DLL in .NET ?

  - by ytrewq

  Let's say I have a DLL that provides math calculus functions. To use it, I include the using Colhq.Math.Basic; namespace. How could I use it by adding a statement like using Blala.Functions.Math; ? So how could I use everything (methods, enums, etc.) from a DLL by using a different namespace ? Is there a one-shot way to wrap or mask a DLL ?

  Read the article

• DWR and Jquery into spring MVC 2.5

  - by Mark Estrada

  Hi, From my shallow reading, Spring MVC does not support jquery directly. It does enable integration with DWR framework. From my understanding of DWR, it is an ajax framework that allows you to call javas methods from javascript. Can I use both in my application? With Jquery handling most of the javascript code and client side interaction and DWR making the ajax calls? I am leaning towards learning jquery but there is no out of the box support for it in spring 2.5.

  Read the article

• Difference between mutableArrayValueForKey and calling insertObject:inEmployeesAtIndex: directly

  - by jasonbogd

  I have a question regarding using KVO-compliant methods to insert/remove objects from an array. I'm working through Aaron Hillegass' Cocoa Programming for Mac OS X and I saw the following line of code (in the insertObject:inEmployeesAtIndex: method: [[undoManager prepareWithInvocationTarget:self] removeObjectFromEmployeesAtIndex:index]; Correct me if I'm wrong, but I always thought it was better to call mutableArrayValueForKey: and then removeObjectAtIndex:...so I tried changing the above line to this: [[undoManager prepareWithInvocationTarget:[self mutableArrayValueForKey:@"employees"]] removeObjectAtIndex:index]; And it didn't work. Can someone explain the difference and why the first line works but the second line doesn't?

  Read the article

• Why is javac failing on @Override annotation

  - by skiphoppy

  Eclipse is adding @Override annotations when I implement methods of an interface. Eclipse seems to have no problem with this. And our automated build process from Cruise Control seems to have no problem with this. But when I build from the command-line, with ant running javac, I get this error: [javac] C:\path\project\src\com\us\MyClass.java:70: method does not override a method from its superclass [javac] @Override [javac] ^ [javac] 1 error Eclipse is running under Java 1.6. Cruise Control is running Java 1.5. My ant build fails regardless of which version of Java I use.

  Read the article

• Best way to access database from android

  - by Brandon Delany

  I am working on a Android app and I have a dilemma. I have a list of Objects. I have to update each of these objects with a database. I have 2 methods: Method 1: I can loop through the Objects. For each object I can connect to the server, update it, and then move on to the next Object, and so forth. Method 2: I can store the Objects in a list, send the whole list to the server, update it on the server side, then return a list of updated objects. My questions are: Which method is faster? Which method is easier on the phone's battery? By the way, Method 1 is easier for me to code :). Thank you.

  Read the article

• python, wrapping class returning the average of the wrapped members

  - by João Portela

  The title isn't very clear but I'll try to explain. Having this class: class Wrapped(object): def method_a(self): # do some operations return n def method_b(self): # also do some operations return n I wan't to have a class that performs the same way as this one: class Wrapper(object): def __init__(self): self.ws = [Wrapped(1),Wrapped(2),Wrapped(3)] def method_a(self): results=[Wrapped.method_a(w) for w in self.ws] sum_ = sum(results,0.0) average = sum_/len(self.ws) return average def method_b(self): results=[Wrapped.method_b(w) for w in self.ws] sum_ = sum(results,0.0) average = sum_/len(self.ws) return average obviously this is not the actual problem at hand (it is not only two methods), and this code is also incomplete (only included the minimum to explain the problem). So, what i am looking for is a way to obtain this behavior. Meaning, whichever method is called in the wrapper class, call that method for all the Wrapped class objects and return the average of their results. Can it be done? how? Thanks in advance. ps-didn't know which tags to include...

  Read the article

• Why would it be a bad idea to have database connection open between client requests?

  - by AspOnMyNet

  1) Book I’m reading argues that connections shouldn’t be opened between client requests, since they are a finite resource. I realize that max pool size can quickly be reached and thus any further attempts to open a connection will be queued until connection becomes available and for that reason it would be imperative that we release connection as soon as possible. But assuming all request will open connection to the same DB, then I’m not sure how having a connection open between two client requests would be any less efficient than having each request first acquiring a connection from connection pool and later returning that object to connection pool? 2) Book also recommends that when database code is encapsulated in a dedicated data access class, then method M opening a database connection should also close that connection. a) I assume one reason why M should also close it, is because if method M opening the connection doesn’t also close it, but instead this connection object is used inside several methods, then it’s more likely that a programmer will forget to close it. b) Are there any other reasons why a method opening the connection should also close it? thanx

  Read the article

• Office Automation Libraries

  - by Ian

  Some time ago I posted about a question about reading Excel files as a server process, to get around the tighter restrictions Microsoft have been applying on Office Automation. I now need to extend this, by finding methods/libraries to read other sorts of Office files in an automated way on a server. The applications I'm interested in are Word, Powerpoint, Project and to a lesser extent Word and Visio. I need to be able to support 97-2003 office files, and the newer open xml formats (e.g. xlsx, docx) at a very least. With regards to Word integration, I also need to be able to handle writing/reading RTF text. If anyone has any suggestions I'd be pleased to hear them. Thanks

  Read the article

• Ant ignores attempt to override the LANG environment variable

  - by Steen

  We need to test a java build with the languages set to different values. I can manually (i.e. via export LANG=en_DK.UTF-8 and export LANG=en_DK) test that the unit tests run with the ant build script behaves differently, but I need to set the environment variable from ant. I have tried setting it using these methods (with the shell $LANG set to en_DK.UTF-8): using -D on the command line: ant -DLANG=en_DK using a build.properties file with the line LANG=en_DK in it using the following statements in the build.xml file (sorry for the formatting, I can't get SO to display it otherwise): : <property environment="ANTENV"/> <property name="ANTENV.LANG" value="en_DK"/> Using any of the three possibilities, and when run with -debug, ant reports that: Override ignored for property "LANG" What can I do to set the LANG environment variable from within ant?

  Read the article

< Previous Page | 265 266 267 268 269 270 271 272 273 274 275 276  | Next Page >