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• Is XML-RPC bad used as a protocol for a public API implementation?

  - by Jack Duluoz

  I need to implement a web API for a project I'm working on in this period. I read there are many standard protocols to do it: XML-RPC, SOAP, REST. Apparently, the XML-RPC one is the easiest one to implement and use from what I saw, but I didn't find anything about using it to implement an API. Instead I found many tutorial about creating a REST API in PHP, for example. Is there any counter-indication for using XML-RPC to implement a public web API? Also, more generally speaking, I could (sort of) define a custom protocol for my API, to keep things simpler (i.e. accepting only GET request containing the parameters I need): would this be so bad? Is using a standard protocol a must-do?

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• Dirty Reads in Postgres

  - by User1

  I have a long running function that should be inserting new rows. How do I check the progress of this function? I was thinking dirty reads would work so I read http://www.postgresql.org/docs/8.4/interactive/sql-set-transaction.html and came up with the following code and ran it in a new session: SET SESSION CHARACTERISTICS AS SERIALIZABLE; SELECT * FROM MyTable; Postgres gives me a syntax error. What am I doing wrong? If I do it right, will I see the inserted records while that long function is still running? Thanks

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• Generate accessors in Visual C++ 2008

  - by gramm

  Hi, I'm trying to generate the accessors and mutators for my variables automatically, but just can't find a way. I tried the right-click/refactor... solution, but the refactor item doesn't appear. I'm not in the mood right now to learn how to write a macro to do this, and I don't have the money to buy a commercial solution (internship student). Any help is welcome, I don't feel like writing all my get/set by hand. note : it's C++ so the {get;set} syntax doesn't work (or does it ?).

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• How to ORDER BY non-column field?

  - by Phil Bolduc

  I am trying to create an Entity SQL that is a union of two sub-queries. (SELECT VALUE DISTINCT ROW(e.ColumnA, e.ColumnB, 1 AS Rank) FROM Context.Entity AS E WHERE ...) UNION ALL (SELECT VALUE DISTINCT ROW(e.ColumnA, e.ColumnB, 2 AS Rank) FROM Context.Entity AS E WHERE ...) ORDER BY *??* LIMIT 50 I have tried: ORDER BY Rank and ORDER BY e.Rank but I keep getting: System.Data.EntitySqlException: The query syntax is not valid. Near keyword 'ORDER' I do not think it is a problem with the Rank column. I do think it is how I am trying to apply an order by to two different esql statements joined by union all. Could someone suggest: How to apply a ORDER BY to this kind of UNION/UNION ALL statment How to order by the non-entity column expression. Thanks.

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• override the operator overloading in C++ ?

  - by stdnoit

  helo guys i have class call Complex I did operator overloading like such Complex c = a + b; // where a and b are object of Complex class which basically is operator+(Complex& that); but I dont know how to say for example double c = a + 10; //where a is object of Complex class but 10 is integer / double I did define typecasting for a to be double get my IDE says that there are too many operands + and it somehow complains for not being able to "understand" the + it has to be in this format though double c = a + 10; thanks

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• Where does one enter the JavaScript code in CRM Dynamics?

  - by Konrad Viltersten

  I've started to play with CRM Dynamics yesterday so this question should be seen as a very basic one. I've been coding for many years but CRM D is news to me. Apparently, one is supposed to be able to enter JavaScript code to customize the behavior of the application. I've understood that there's an API for that and that touching DOM directly or playing with jQuery is a no-no. Question: Where is the JS-code supposed to be entered? I've gone through all the menus but as far I can see, there's no spot where I could plug-in my custom code. E.g.: Where do I get to define a validation for the last name of a contact currently being defined?

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• Can I use memcpy in C++ to copy classes that have no pointers or virtual functions

  - by Shane MacLaughlin

  Say I have a class, something like the following; class MyClass { public: MyClass(); int a,b,c; double x,y,z; }; #define PageSize 1000000 MyClass Array1[PageSize],Array2[PageSize]; If my class has not pointers or virtual methods, is it safe to use the following? memcpy(Array1,Array2,PageSize*sizeof(MyClass)); The reason I ask, is that I'm dealing with very large collections of paged data, as decribed here, where performance is critical, and memcpy offers significant performance advantages over iterative assignment. I suspect it should be ok, as the 'this' pointer is an implicit parameter rather than anything stored, but are there any other hidden nasties I should be aware of?

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• Why cant i add Orientation property to the style setter in WPF

  - by nihi_l_ist

  When i write something like this: <Style x:Key="panelS"> <Setter Property="Orientation" Value="Horizontal" /> <Setter Property="DockPanel.Dock" Value="Top" /> </Style> I get the error that says: Cannot resolve the Style Property 'Orientation'. Verify that the owning type is the Style's TargetType, or use Class.Property syntax to specify the Property. Sure i have a Dock panel with many Stackpanels in it so i want to move Stackpanel's properties to the style. But there is this error and i dont quite understand what it means and what is the workaround(..i'd wanted not to assign Orientation on every Stackpanel).

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• Can I Use ASP.NET Wizard Control to Insert Data into Multiple Tables?

  - by SidC

  Hello All, I have an ASP.NET 3.5 webforms project written in VB that involves a multi-table SQL Server insert. That is, I want the customer to input all their contact information, order details etc. into one control (thinking wizard control). Then, I want to call a stored procedure that does the insert into the respective database tables. I'm familiar and comfortable with the ASP.NET wizard control. However, all the examples I've seen in my searches pertain to inserting data into one table. Questions: 1. Given a typical order process - customer information, order information, order details - should a wizard control be used to insert data into multiple database tables? If not, what controls/workflow do you suggest? 2. I've set primary keys and indexes on my order details, orders and customers tables. Is there special stored procedure syntax to use to ensure that referential integrity is maintained through the insert process? Thanks, Sid

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• Parantheses around method invokation: why is the compiler complaining about assignment?

  - by polygenelubricants

  I know why the following code doesn't compile: public class Main { public static void main(String args[]) { main((null)); // this is fine! (main(null)); // this is NOT! } } What I'm wondering is why my compiler (javac 1.6.0_17, Windows version) is complaining "The left hand side of an assignment must be a variable". I'd expect something like "Don't put parantheses around a method invokation, dummy!", instead. So why is the compiler making a totally unhelpful complaint about something that is blatantly irrelevant? Is this the result of an ambiguity in the grammar? A bug in the compiler? If it's the former, could you design a language such that a compiler would never be so off-base about a syntax error like this?

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• Android: Best way/library to write an app that simply gets/sets your Facebook status, sends Facebook

  - by D.

  I have the Android Facebook-Connect library running in my emulator and I'm able to set my status with the Facebook API I have setup. However, I don't know where to go from there? Am I supposed to use the session key that this library allows me to get and make some Facebook API calls? I haven't found any code examples to even see what the proper syntax is. Am I better off using another library? I tried fbrocket with limited luck(I get a "server error 104 - Incorrect signature"). Thanks for any help.

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• How to generate a .po file?

  - by tobefound

  On Windows using WAMPserver (Apache, MySql, Php) I have the following: //test.php if (!defined('LC_MESSAGES')) define('LC_MESSAGES', 6); $lang = "sv"; putenv("LANG=$lang"); setlocale(LC_ALL, $lang); $domain = "messages"; bindtextdomain($domain, "./locale"); textdomain($domain); echo _("This is a string"); It works fine, i.e. it outputs "This is a string" which means I have gettext correctly setup up. But HOW in the world do I create a .po-file? I downloaded POEdit but I can't see how to make this happen with that software. ANy help is greatly appreciated!

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• How to prevent swallowing exceptions caused by unset expectations for a mocked object?

  - by Schultz9999

  I am looking for a way to modify catch block depending on if it's executed during the unit test run or not. The purpose is basically to detect/setup mock expectations which are swallowed because catch doesn't rethrow. I am using MSTest. One obvious thing is using preprocessor but I don't think it works. Especially if to use DEBUG define. There should be an easy way to detect that, shouldn't it? I must have been looking for something wrong because I couldn't find much info on that. try {...} catch(Exception) { Log(...); #if DEBUG throw; #endif }

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• a nicer way to create structs in a loop

  - by sandra

  Hi guys, I haven't coded in C++ in ages. And recently, I'm trying to work on something involving structs. Like this typedef struct{ int x; int y; } Point; Then in a loop, I'm trying to create new structs and put pointers to them them in a list. Point* p; int i, j; while (condition){ // compute values for i and j with some function... p = new Point; p* = {i, j}; //initialize my struct. list.append(p); //append this pointer to my list. } Now, my question is it possible to simplify this? I mean, the pointer variable *p outside of the loop and calling p = new Point inside the loop. Isn't there a better/nicer syntax for this?

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• Optional parens in Ruby for method with uppercase start letter?

  - by RasmusKL

  I just started out using IronRuby (but the behaviour seems consistent when I tested it in plain Ruby) for a DSL in my .NET application - and as part of this I'm defining methods to be called from the DSL via define_method. However, I've run into an issue regarding optional parens when calling methods starting with an uppercase letter. Given the following program: class DemoClass define_method :test do puts "output from test" end define_method :Test do puts "output from Test" end def run puts "Calling 'test'" test() puts "Calling 'test'" test puts "Calling 'Test()'" Test() puts "Calling 'Test'" Test end end demo = DemoClass.new demo.run Running this code in a console (using plain ruby) yields the following output: ruby .\test.rb Calling 'test' output from test Calling 'test' output from test Calling 'Test()' output from Test Calling 'Test' ./test.rb:13:in `run': uninitialized constant DemoClass::Test (NameError) from ./test.rb:19:in `<main>' I realize that the Ruby convention is that constants start with an uppercase letter and that the general naming convention for methods in Ruby is lowercase. But the parens are really killing my DSL syntax at the moment. Is there any way around this issue?

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• Trouble understanding Java map Entry sets

  - by Jake Sellers

  I'm looking at a java hangman game here: https://github.com/leleah/EvilHangman/blob/master/EvilHangman.java The code in particular is this: Iterator<Entry<List<Integer>, Set<String>>> k = partitions.entrySet().iterator(); while (k.hasNext()) { Entry<?, ?> pair = (Entry<?, ?>)k.next(); int sizeOfSet = ((Set<String>)pair.getValue()).size(); if (sizeOfSet > biggestPartitionSize) { biggestPartitionSize = sizeOfSet; } } Now my question. My google foo is weak I guess, I cannot find much on Entry sets other than the java doc itself. Is is just a temporary copy of the map? And I cannot find any info at all on the syntax: Entry<?, ?> Can anyone explain or point me toward an explanation of what is going on with those question marks? Thanks in advanced.

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• Are there any Objective-C / Cocoa naming conventions for properties that are acronyms?

  - by t6d

  I have an object that models an online resource. Therefore, my object has to store the URL of the resource it belongs to. How would I name the getter and setter? MyObject *myObject = [[MyObject alloc] init]; // Set values [myObject setURL:url]; myObject.URL = url; // Get values [myObject URL]; myObject.URL; or would the following be better: MyObject *myObject = [[MyObject alloc] init]; // Set values [myObject setUrl:url]; myObject.url = url; // Get values [myObject url]; myObject.url; The former example would of course require to define the property in the following way: @property (retain, getter = URL, setter = setURL:) NSURL *url;

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• How to simulate :active css pseudo class in android on non-link elements?

  - by chas s.

  I'd like to be able to mimic the behavior of the :active pseudo class on all elements in Android webkit. Currently, the :active syntax only works on a elements (links). Nearly all of the actionable elements in the app I'm working on are something other than a standard link tag. iOS webkit supports :active on all elements. /* works on both android iOS webkit */ a:active { color: blue; } /* works on iOS webkit, does not work on android webkit */ div:active { color: red; } I've found a couple of resources [1,2] that solve similar problems, but they're both a bit heavy, and I'm wondering if there's a lighter weight solution that I'm just not able to find. http://cubiq.org/remove-onclick-delay-on-webkit-for-iphone http://code.google.com/intl/ro-RO/mobile/articles/fast_buttons.html

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• Problems using the Razor model when creating my knockout ViewModel

  - by Emil Kantis

  I'm having problems with using the Model in a javascript call when setting up my knockout VM.. @model List<AdminGui.Models.Domain> <script src="http://ajax.aspnetcdn.com/ajax/knockout/knockout-2.2.1.js" type="text/javascript"></script> <script type="text/javascript"> function ViewModel() { var self = this; self.domains = ko.observableArray( ko.utils.arrayMap(@Model, function(item) { return new Domain(item.guid, item.description, item.namespaces); })); } I get a syntax error on @Model in the ko.utils.arrayMap call. I suspect it might be my Razor-fu that is lacking... :)

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• Using NVL function in SQL, please help!

  - by user363024

  I'm needing to select first and last name in a table which is working fine in the following SQL, but the part that isn't working is the NVL function. The file should show all pilots at a company that fly helicopters and IF they don't have a licence the field HT_NAME should come up as 'N/A' and the field for end hours flown should be 0. I've put NVL function in as my text details but it still isn't working. Have i made a syntax error? Help would be appreciated. Select E.EMP_NBR, E.EMP_FIRSTNAME || ' ' || E.EMP_LASTNAME, E.EMP_PILOT, ED.HT_NBR, NVL(HT.HT_NAME, 'N/A'), NVL(ED.END_HRS_FLOWN, 0), ED.END_LAST_ANNUAL_REVIEW_DATE From ENDORSEMENT ED, EMPLOYEE E, HELICOPTER_TYPE HT WHERE HT.HT_NBR = ED.HT_NBR (+) ORDER BY ED.END_HRS_FLOWN DESC, E.EMP_FIRSTNAME || ' ' || E.EMP_LASTNAME ASC; should make employees who are not pilots appear with a N/A under heli type and 0 under hours flown. It isn't working - even though I have tried multiple things to repair it.

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• String Functions in IIS Url Rewrite Module

  - by Nariman

  The IIS URL Rewrite Module ships with 3 built-in functions: * ToLower - returns the input string converted to lower case. * UrlEncode - returns the input string converted to URL-encoded format. This function can be used if the substitution URL in rewrite rule contains special characters (for example non-ASCII or URI-unsafe characters). * UrlDecode - decodes the URL-encoded input string. This function can be used to decode a condition input before matching it against a pattern. The functions can be invoked by using the following syntax: {function_name:any_string} The question is: can this list be extended by introducing a Replace function that's available for changing values within a rewrite rule action or condition? Another way to frame the question: is there any way to do a global replace on a URL coming in using this module? It seems that you're limited to using regular expressions and back-references to construct strings, without a search/replace functionality to replace every X with Y in {REQUEST_URI} before issuing a redirect.

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• Relational databases are not suited for my application - what's the alternative?

  - by waitinforatrain

  Hi, I'm writing a CMS in PHP that allows the user to define different fields (e.g. a Blog page could have fields for Title (string), Content (rich text), Picture (file)). I need the user to be able to add and remove fields dynamically, and the only way I can think of to do it with relational DBs is to serialise all these values and store them in one cell. This seems like a slow approach and like I'm trying to fit something dynamic within a static structure. Could someone recommend anything that is PHP-compatible that would make this easier?

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• How to correctly and standardly compare floats?

  - by DIMEDROLL

  Every time I start a new project and when I need to compare some float or double variables I write the code like this one: if (fabs(prev.min[i] - cur->min[i]) < 0.000001 && fabs(prev.max[i] - cur->max[i]) < 0.000001) { continue; } Then I want to get rid of these magic variables 0.000001(and 0.00000000001 for double) and fabs, so I write an inline function and some defines: #define FLOAT_TOL 0.000001 So I wonder if there is any standard way of doing this? May be some standard header file? It would be also nice to have float and double limits(min and max values)

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• Why vba doesnt handling Error 2042

  - by Jonathan Raul Tapia Lopez

  I have a variable "fila" with a full line with excel's values; The problem is when in excel I have --#N/A-- vba take that value like "Error 2042" and I cannot asign that value to "valor" and produce me an error, until this point everything is ok, now I am trying to define a "On error goto" for go to the "next" iteration in the loop "for", but I dont know Why vba doesnt handle the error. Do While Not IsEmpty(ActiveCell) txt = ActiveCell.Value2 cell = ActiveCell.Offset(0, 1).Value2 fila = Range("C20:F20") For j = 1 To UBound(fila, 2) On Error GoTo Siguiente If Not IsEmpty(fila(1, j)) Then valor = fila(1, j) cmd = Cells(1, j + 2).Value2 devolver = function1(cmd, txt, cell, valor) arrayDevolver(p) = devolver p = p + 1 End If Siguiente: Next Loop '

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• C errors - Cannot combine with previous 'struct' declaration specifier && Redefinition of 'MyMIDINotifyProc' as different kind of symbol

  - by user1905634

  I'm still new to C but trying to understand it better by working my way through a small MIDI audio unit (in Xcode 4.3.3). I've been searching for an answer to this all day and still don't even understand exactly what the problem is. Here's the code in question: //MyMIDINotifyProc.h #ifndef MIDIInstrumentUnit_CallbackProcs_h #define MIDIInstrumentUnit_CallbackProcs_h void MyMIDINotifyProc (const MIDINotification *message, void *refCon); #endif //MyMIDINotifyProc.c #include <CoreMIDI/CoreMIDI.h> #include "MyMIDINotifyProc.h" void MyMIDINotifyProc (const MIDINotification *message, void *refCon) { //manage notification } In the header definition I get this: ! Cannot combine with previous 'struct' declaration specifier I've made sure the definitions match and tried renaming them and I still get this in my .c file: ! Redefinition of 'MyMIDINotifyProc' as different kind of symbol Which points to the .h definition as the 'Previous definition'. I know that MIDIServices.h in the CoreMIDI framework defines: typedef void (*MIDINotifyProc)(const MIDINotification *message, void *refCon); But I don't understand if/why that would cause an error. I would be grateful if anyone could offer some help.

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