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• link .a and .o files in GCC

  - by David

  hi! I have two precompiled library: X.a and Y.a and a test.cpp (without main function) source code use these two libraries. I compiled the C++ using: g++ -c test.cpp and I got 'test.o'. Now how can I link these three together to generate a .a file because test.cpp use some function in X.a and Y.a and other GCC libraries? BTW, I am doing these under Windows using MinGW. Can I rename this .a file to .lib and use this .lib in VC? Thanks!

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• make reference to an empty query in flex

  - by Adam

  a bit of a dumb questions I'm sure I'm trying to allow user to set an item to be default. I've got a function that run a query to first find the current default item. Then runs a second query that unsets the current default item. Then a third query runs to set the new user selected item to be the default. This seem to work fine when a default item has been perviously selected, but when I try to set the default item initially I get the good old "Cannot access a property or method of a null object reference." error. This is because the first query that runs returns no items I'm sure. So I need to write an if statement that if the first query returns nothing to skip the second and go right to the third. The only problem is I can't make a reference to a null object. So how do I go about writing this statement. Thanks

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• Java compilers or JVM languages that support goto?

  - by unknown

  Is there a java compiler flag that allows me to use goto as a valid construct? If not, are there any third-party java compilers that supports goto? If not, are there any other languages that support goto while at the same time can easily call methods written in Java? The reason is I'm making a language that is implemented in Java. Gotos are an important part of my language; I want to be able to compile it to native or JVM bytecode, although it has to be able to easily use Java libraries (ie. C supports goto, but to use it I'd have to rewrite the libraries in C). I want to generate C or Java, etc source files, and not bytecode or machine code. I'm using a third-party compiler to do that.

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• Visual Studio 2008 resolving wrong reference

  - by e28Makaveli

  In my project file, I have the following entry: <Reference Include="Microsoft.Practices.Unity, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <HintPath>..\..\..\..\Libraries\Microsoft.Practices.Unity.dll</HintPath> </Reference> which in absolute terms translates to: C:\dev\LUT600 2.1.1\OCC600\Libraries Somehow, when I try to compile the project, Visual Studio loads a reference from a totally different path: /reference:"C:\Program Files\Microsoft Enterprise Library 4.1 - October 2008\Bin\Microsoft.Practices.Unity.dll. How it resolves to this location is a complete mystery as this DLL is not referenced anywhere in this project. I have set Specific Verion to true but it still resolves the reference from this location. Any ideas? TIA. Klaus

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• Simple neon optimization in Android

  - by Peter

  In my Android application, I use a bunch of open source libraries such as libyuv, libvpx, libcrypto, libssl, etc. Some of them come with Android.mk. For others, I hand-crafted Android.mk. The code is built only for arm for now. Here is my Application.mk: APP_ABI := armeabi-v7a APP_OPTIM := release APP_STL := gnustl_static APP_CPPFLAGS := -frtti I am looking for way to generate binaries that are optimized for neon. Browsing the net, I found the following setting that someone is using in his Android.mk: LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -march=armv7 I wonder if I simply put this setting in Application.mk, will it automatically get applied across all the libraries? A step before each library is built is the following: include $(CLEAR_VARS) Is it better to include LOCAL_CFLAGS directive after this line (instead of including it in Application.mk)? Finally, why doesn't ndk-build automatically optimize for neon when it sees armabi in Application.mk? Regards.

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• how do redirect values to other page without click event in html. Below code is fine IE. But Not in

  - by karthik

  I have implemented paypal in my web page. Process is 'given inputs are redirect to other page(2 nd page) which have to get that input and redirect to paypal page(third page). Here we submit data on first page. value pass to second page(in this page user interaction not allowed) after pass to third page.It works fine in IE . But Not In Mozila.Send any Solution. Code sample(second page): <%string product = Request.QueryString["productName"].ToString();% <% string amount = Request.QueryString["price"].ToString(); % " " document.all.frmpaypal.submit(); Fine in IE, Not In Mozila

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• translate ia32 into C

  - by David Lee

  I am trying to translate the following: Action: push %ebp #function prolog mov %esp, %ebp sub $0x10, %esp mov 0x8(%ebp), %eax #first line compiles to these 4 lines imul 0x8(%ebp), %eax sub $0x7, %eax mov %eax, -0x4(%ebp) addl $0x8, 0xc(%ebp) #second line mov -0x4(%ebp), %eax #third line mov 0xc(%ebp), %edx mov (%edx, %eax, 4), %eax add $0x3, %eax movb $0x41, (%eax) leave ret So far I have the following: //What am I missing? void Action(int x, char **y) { int z = x * x - 7; y+=8; //missing third line } What is the best way to translate this?

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• best java jabber client library

  - by flybywire

  What good/bad experiences do you have with java jabber libraries?

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• How to get the position of a record in a table (SQL Server)

  - by Peter Siegmann

  Following problem: I need to get the position of a record in the table. Let's say I have five record in the table: Name: john doe, ID: 1 Name: jane doe, ID: 2 Name: Frankie Boy, ID: 4 Name: Johnny, ID: 9 Now, "Frankie Boy" is in the third position in the table. But How to get this information from the SQL server? I could count IDs, but they are not reliable, Frankie has the ID 4, but is in the third position because the record with the ID '3' was deleted. Is there a way? I am aware of ROW_RANK but it would be costly, because I need to select basically the whole set first before I can rank row_rank them. I am using MS SQL Server 2008 R2.

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• Set two classes from array

  - by Thomas

  I want to change the classes on every third output from a query: <?php $style_classes = array('box','box','box no_right_margin'); $style_index = 0; ?> I set this on the div: <div <?php $k = $style_index%4; echo "class=$style_classes[$k]"; $style_index++; ?>> On the third div I want the class to look like this: <div class="box no_right_margin"> Right now it looks like: <div class="box" no_right_margin>

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• GIS: line_locate_point() in Python

  - by miracle2k

  I'm pretty much a beginner when it comes to GIS, but I think I understand the basics - it doesn't seem to hard. But: All these acronyms and different libraries, GEOS, GDAL, PROJ, PCL, Shaply, OpenGEO, OGR, OGC, OWS and what not, each seemingly depending on any number of others, is slightly overwhelming me. Here's what I would like to do: Given a number of points and a linestring, I want to determine the location on the line closest to a certain point. In other words, what PostGIS's line_locate_point() does: http://postgis.refractions.net/documentation/manual-1.3/ch06.html#line%5Flocate%5Fpoint Except I want do use plain Python. Which library or libraries should I have a look at generally for doing these kinds of spatial calculations in Python, and is there one that specifically supports a line_locate_point() equivalent?

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• How to create an application which embeds and runs Python code without local Python installation?

  - by Robert

  Hello fellow software developers. I want to distribute a program which is scriptable by embedding the Python interpreter. What I don't want is that the user has to install Python first. So I'm looking for a solution where I distribute only the following components: my program executable and its libraries the Python library (dll/so) a ZIP-file containing all necessary Python modules and libraries. How can I accomplish this? Do you have a step-by-step recipe for me? The solution should be suitable for both Windows and Linux. Thanks in advance.

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• Buggy Perl regular expression

  - by Tichomir Mitkov

  Hi, there I'm writing a program that has to get values from a file. In the file each line indicates an entity. Each entity has three values. For example: Value1 Value2 value3 I have a regular expresion to match them m/(.*?) (.*?) (.*?)/m; But it seems that the third value in never matched! The only way to match the third value is to add another value in the file and another "matching brackets" in the expresion. But this does not satisfy me. Thanks in Advance!

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• Any good Work Flow diagram for Joomla 1.5?

  - by simple

  Though I don't tolerate joomla for it's buggy 3rd party components , decided to look at it's core architecture, and any diagram would make my investigation efficient, thanks

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• Java - Could not find the main class?

  - by asmo

  I'm having a hard-time with a Java error. I'm getting this when double-clicking on my compiled project Jar file in order to run it: Could not find the main class: testPackage.testFrame. Program will exit. However, my main class is cleary defined in the project properties. Furthermore, everything works fine when I run the project directly from NetBeans. I'm using the ip2c.jar third-party library to determine countries from IP addresses. If I comment the class that is using the ip2c.jar file, I don't get the error. How can a third-party library be preventing the JVM from finding my main class?

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• Linux friendly (.NET/Mono) browser object?

  - by HankB

  Hi folks, A friend of mine (familiar with C# and .NET on Windows) has asked how to port some functionality to a Linux host. This functionality is based on a JSP web page that fetches some data from the host server and displays it in a banner on a page. His Win/C#/.NET code simply creates a browser object which loads the page and he then inspects the resulting object to extract the data. I'm wondering what alternatives exist to duplicate this function on Ubuntu Linux. I'm not certain that the necessary libraries exist on this installation. I can assume that things like Perl and Python are ubiquitous, but I am not familiar with any libraries that include a browser object capable of executing javascript and exposing the results to another program. Any suggestions that lead in this direction are welcome. Thanks!

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• Performing complicated XPath queries in Scala

  - by Ken Bloom

  What's the simplest API to use in scala to perform the following XPath queries on a document? //s:Annotation[@type='attitude']/s:Content/s:Parameter[@role='type' and not(text())] //s:Annotation[s:Content/s:Parameter[@role='id' and not(text())]]/@type The only documentation I can find on Scala's XML libraries has no information on performing complicated real XPath queries. I used to like JDOM for this purpose (in Java), but since JDOM doesn't support generics, it will be painful to work with in Scala. (Other XML libraries for Java have tended to be even more painful in Java, but I admit I don't know the landscape real well.)

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• Parallel Task In C#.net

  - by Test123

  I have C#.net application. I wanted to run my application In Thread. But because of third party dll it dont allow to use application in multiThread. There is one object in thrid party dll ,which only allow to create instance at one time only. When i manually run application exe instnace multiple time & process my data it process successfully..(might because of each exe run with its application domain) Same thing i require to implement from C# code. for that i have created dll which can accessible by Type.GetTypeFromProgID()..but multiple dll instnace creating same problem. Is there any way i could achive manual parallelism through code to process same exe code in multiple application domain?

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• Error in my OO Generics design. How do I workaround it?

  - by John

  I get "E2511 Type parameter 'T' must be a class type" on the third class. type TSomeClass=class end; ParentParentClass<T>=class end; ParentClass<T: class> = class(ParentParentClass<T>) end; ChildClass<T: TSomeClass> = class(ParentClass<T>) end; I'm trying to write a lite Generic Array wrapper for any data type(ParentParentClass) ,but because I'm unable to free type idenitifiers( if T is TObject then Tobject(T).Free) , I created the second class, which is useful for class types, so I can free the objects. The third class is where I use my wrapper, but the compiler throws that error. How do I make it compile?

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• Code Signing Identity does not match in my keychain, for mac app store developing?

  - by larntin

  hi, 1, I already download the "Apple Worldwide Developer Relations Certification Authority",and add it into my keychain. 2, My team leader already had created two Cers for Mac App store developing, I download and add it into my keychain. 3, I used two methods to sign my add, but failed all. First, add code sign section in my .xcodeproj(3.2.5). Second, I used script: productbuild --component ./bin/MAS_Release/MyApp.app /Applications --sign "3rd Party Mac Developer Application: My Company Co., Ltd." --product ./src/MyApp/MyApp-Info.plist MyApp.pkg But it failed with information: Code Signing Identity '3rd Party Mac Developer Application: My Company Co., Ltd.' does not match any valid, non-expired, code-signing certificate in your keychain. I observed that my certifications in keychain don't have small trangle. how make the small trangle absence?(when I'am importing the Cers from my Agent, it don't have the trangle absence)

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• How can I search for an email using the zend framework?

  - by Ali

  Hi guys I need to build a functionality that involves searching through emails in an inbox for emails whose subjects match a certain user inputted keyword. SInce I'm using the zend framework I would like a solution that uses the zend framework libraries. Aside this I have noticed that the zend libraries are a bit limited with respect to my requirements for email handling. Is there any open library available in php which can be used for handling emails - when I mean handling emails I mean like: Ease to mark and flag emails Moving of emails from folder to folder. Parsing emails searching through emails SOrting emails etc - the stuff you would require if you wished to build a web client. EDIT ========= I'm looking for a generic solution here. The emails are in a regular email inbox on an IMAP server. I need a way to be able to read through and search for emails in the inbox using any specialized library to make it easier.

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• Java Application/Thread Server

  - by Manrico Corazzi

  I am looking for something very close to an application server with these features: it should handle a series of threads/daemons, allowing the user to start-stop-reload each one without affecting the others it should keep libraries separated between different threads/daemons it should allow to share some libraries Currently we have some legacy code reinventing the wheel... and not a perflectly round-shaped one at that! I thought to use Tomcat, but I don't need a web server, except maybe for the simple backoffice user interface (/manager/html). Any suggestion? Is there a non-web application server, or is there a better alternative to Tomcat (more lightweight, for example, or easier to configure)? Thanks in advance.

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• Why does adding a reference to project targeting .NET Framework 4.0 fail?

  - by Malcolm Post

  We have two projects that are both class libraries. Project 1 is a VS 2008 project and targets the .NET Framework 3.5. Project 2 is a VS 2010 (release candidate) project that targets the .NET Framework 4.0. When I try to add a reference to Project 2 in Project 1, it fails with a less than informative error message. I know that if I change the target Framework for Project 2 to 3.5, then adding the reference will work. My question is, if I don't change the target frameworks, but convert Project 1 to VS 2010, will the referencing work? Stated another way, is there some inherent incompatiblity between class libraries targeting different framework versions, or is it failing for me because VS 2008 doesn't know about the 4.0 framework?

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• Making of a "Babbelbox" where you can speak to for partys

  - by Spidfire

  Ive got a project to make for a party, its called in holland a "Babbelbox". its a computer with a webcam and microphone that can be used to make a kind of video log of everyone who wants to say something about the party. But the problem is that i dont know where to start. ive made a kind of video show system in c but i cant save any data to a good format so it wont jam my harddisk in one hour full. Requirements: Record video + audio Recoding has to start after pressing a button Good compression over the recorded videos (would be even better if it can to be read by final cut pro or premiere pro) Light wight programm would be nice but i could scale up the computer power

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• javascript filter nested object based on key value

  - by murray3

  I wish to filter a nested javascript object by the value of the "step" key: var data = { "name": "Root", "step": 1, "id": "0.0", "children": [ { "name": "first level child 1", "id": "0.1", "step":2, "children": [ { "name": "second level child 1", "id": "0.1.1", "step": 3, "children": [ { "name": "third level child 1", "id": "0.1.1.1", "step": 4, "children": []}, { "name": "third level child 2", "id": "0.1.1.2", "step": 5, "children": []} ]}, ]} ] }; var subdata = data.children.filter(function (d) { return (d.step <= 2)}); This just returns the unmodified nested object, even if I put value of filter to 1. does .filter work on nested objects or do I need to roll my own function here, advise and correct code appreciated. cjm

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