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• simple scala question about httpparser

  - by kula

  hi all. i'm a scala newbee. i have one question. in my code ,i try to import httpparse library like this scalac -classpath /home/kula/code/201005/kookle/lib/htmlparser.jar crawler.scala and i run this code. scala main and it tell me that java.lang.NoClassDefFoundError: org/htmlparser/Parser at FetchActor$$anonfun$act$1$$anonfun$apply$1.apply(crawler.scala:21) at FetchActor$$anonfun$act$1$$anonfun$apply$1.apply(crawler.scala:13) at scala.actors.Reaction.run(Reaction.scala:78) at scala.actors.FJTask$Wrap.run(Unknown Source) at scala.actors.FJTaskRunner.scanWhileIdling(Unknown Source) at scala.actors.FJTaskRunner.run(Unknown Source) i check the file./home/kula/code/201005/kookle/lib/htmlparser.jar and it is no problem.anyone can tell me how cause this bug?

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• Write large PDFs with Java sequentially

  - by Benjamin Muschko

  I am looking for a Java library that let's you write large PDFs sequentially with a minimum amount of memory. Most of the libraries I had a look at has to build up the document in memory first before you can actually write it. The problem I have to deal with are OutOfMemoryErrors. It would be great if I could flush the writer programmatically whenever needed e.g. for each page. Does anyone have any recommendations? I need something with a license along the lines of the LGPL (so not the GPL or the Affero GPL that iText uses).

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• Can run Javascript but not jQuery?

  - by blazonix

  I'm running into a strange problem - I tried running a basic function in JS and jQuery, and while the former worked, the latter didn't. JS - okay alert('Works'); jQuery - not okay $(document).ready({ alert('Works'); }); Here's some facts: My references to the jQuery library are correct (And pretty sure my Internet connection is steady :) I'm using a CDN - CloudFlare to be exact, but I've switched development mode on and Rocket Loader off - so all the code I've uploaded to the server is WYSIWYG (CloudFlare adds some stuff in the tags if you leave Rocket Loader on. I tried running the alert code in the head section, and elsewhere in the body tags, to no avail. What could have possibly gone wrong? EDIT 1: The page is here - http://casestudieslounge.com/chat/BIM/WebContent/chat.php

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• Inline function and calling cost in C

  - by Eonil

  I'm making a vector/matrix library. (GCC, ARM NEON, iPhone) typedef struct{ float v[4]; } Vector; typedef struct{ Vector v[4]; } Matrix; I passed struct data as pointer to avoid performance degrade from data copying when calling function. So I thought designed function like this: void makeTranslation(const Vector* factor, Matrix* restrict result); But, if function is inline, is there any reason to pass values as pointer for performance? Do those variables copied too? How about register and caches? inline Matrix makeTranslation(Vector factor) __attribute__ ((always_inline)); How do you think about calling costs of each cases?

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• getRequestProperty("Authorization") always returns null

  - by Thilo

  I am trying to read the authorization header for an HTTP request (because I need to add something to it), but I always get null for the header value. Other headers work fine. public void testAuth() throws MalformedURLException, IOException{ URLConnection request = new URL("http://google.com").openConnection(); request.setRequestProperty("Authorization", "MyHeader"); request.setRequestProperty("Stackoverflow", "anotherHeader"); // works fine assertEquals("anotherHeader", request.getRequestProperty("Stackoverflow")); // Auth header returns null assertEquals("MyHeader", request.getRequestProperty("Authorization")); } Am I doing something wrong? Is this a "security" feature? Is there a way to make this work with URLConnection, or do I need to use another HTTP client library?

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• Error while including j2ssh in a j2me midlet

  - by Farhan

  I obtained an evaluation license for j2ssh maverick, downloaded the library and included the j2me jar into my project. But i get the following error when i try to run/build the project (in netbeans, using WTK 3.0) Error preverifying class com.maverick.events.J2SSHEventMessages VERIFIER ERROR com/maverick/events/J2SSHEventMessages.class$(Ljava/lang/String;)Ljava/lang/Class;: Cannot find class java/lang/NoClassDefFoundError I get the same error when i use eclipse (error in preverifying stage). Any pointers ? There are more than one NoClassDefFoundErrors in the preverifying stage. Am i using the wrong .jar file ?

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• tools for testing vim plugins

  - by intuited

  I'm looking for some tools for testing vim scripts. Either vim scripts that do unit/functional testing, or classes for some other library (eg Python's unittest module) that make it convenient to run vim with parameters that cause it to do some tests on its environment, and determine from the output whether or not a given test passed. I'm aware of a couple of vim scripts that do unit testing, but they're sort of vaguely documented and may or may not actually be useful: vim-unit: purports "To provide vim scripts with a simple unit testing framework and tools" first and only version (v0.1) was released in 2004 documentation doesn't mention whether or not it works reliably, other than to state that it is "fare [sic] from finished". unit-test.vim: This one also seems pretty experimental, and may not be particularly reliable. May have been abandoned or back-shelved: last commit was in 2009-11 ( 6 months ago) No tagged revisions have been created (ie no releases) So information from people who are using one of those two existent modules, and/or links to other, more clearly usable, options, are very welcome.

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• Strategy for developing namespaced and non-namespaced versions of same PHP code

  - by porneL

  I'm maintaining library written for PHP 5.2 and I'd like to create PHP 5.3-namespaced version of it. However, I'd also keep non-namespaced version up to date until PHP 5.3 becomes so old, that even Debian stable ships it ;) I've got rather clean code, about 80 classes following Project_Directory_Filename naming scheme (I'd change them to \Project\Directory\Filename of course) and only few functions and constants (also prefixed with project name). Question is: what's the best way to develop namespaced and non-namespaced versions in parallel? Should I just create fork in repository and keep merging changes between branches? Are there cases where backslash-sprinkled code becomes hard to merge? Should I write script that converts 5.2 version to 5.3 or vice-versa? Should I use PHP tokenizer? sed? C preprocessor? Is there a better way to use namespaces where available and keep backwards compatibility with older PHP?

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• J2EE: Default values for custom tag attributes

  - by Nick

  So according to Sun's J2EE documentation (http://docs.sun.com/app/docs/doc/819-3669/bnani?l=en&a=view), "If a tag attribute is not required, a tag handler should provide a default value." My question is how in the hell do I define a default value as per the documentation's description. Here's the code: <%@ attribute name="visible" required="false" type="java.lang.Boolean" %> <c:if test="${visible}"> My Tag Contents Here </c:if> Obviously, this tag won't compile because it's lacking the tag directive and the core library import. My point is that I want the "visible" property to default to TRUE. The "tag attribute is not required," so the "tag handler should provide a default value." I want to provide a default value, so what am I missing? Any help is greatly appreciated.

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• UITableViewCells loaded from NIB always nil

  - by Jason B

  I'm trying to create a simple form using a UITableViewController as documented in the Apple Developer Documentation here: http://developer.apple.com/iphone/library/documentation/UserExperience/Conceptual/TableView_iPhone/TableViewCells/TableViewCells.html What I'm trying to do is located in the section entitled: "The Technique for Static Row Content" I've created a couple of UITableViewCells and added them to my nib, but when I try and access them to add them to the UITableView (in the cellForRowAtIndexPath method) they are always null. It's like they are not being properly loaded from the nib. I've double/triple/quadruple checked my code to make sure I'm doing it exactly as detailed in the docs, but no luck. Is there something obvious I'm missing here? Thanks

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• std::for_each on a member function with 1 argument

  - by Person

  I'm wondering how to implement what is stated in the title. I've tried something like... std::for_each( a.begin(), a.end(), std::mem_fun_ref( &myClass::someFunc ) ) but I get an error saying that the "term" (I"m assuming it means the 3rd argument) doesn't evaluate to a function with 1 argument, even though someFunc does take one argument - the type of the objects stored in a. I'm wondering if what I'm trying to do is possible using the standard library (I know I can do it easily using boost). P.S. Does using for_each and mem_fun_ref have any performance implications in comparison to just iterating through a manually and passing the object to someFunc?

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• Transform PDF to HTML, keep layout

  - by Tgr

  What methods are there to transform a PDF to HTML? It could be anything - online service, software, library. (Opensource preferred. In the last case, php or python would be preferred.) It has to keep the original layout (including page numbers, footnotes and such), keep the images (combining them to one single background image per page is acceptable) and keep the links. It should preferably output valid XHTML and clean up PDF features such as ligatures, but if there is some post-processing required, I can live with that. Something with a clean, relatively semantic HTML output would be great. The closest one I found was zamzar.org, but it choked on links. (Also, the HTML output is an ugly heap of absolutely positioned divs and needs post-processing because of encoding problems.)

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• Prolog: using the sort/2 predicate

  - by Øyvind Hauge

  So I'm trying to get rid of the wrapper clause by using the sort library predicate directly inside split. What split does is just generating a list of numbers from a list that looks like this: [1:2,3:2,4:6] ---split-- [1,2,3,2,4,6]. But the generated list contains duplicates, and I don't want that, so I'm using the wrapper to combine split and sort, which then generates the desired result: [1,2,3,4,6]. I'd really like to get rid of the wrapper and just use sort within split, however I keep getting "ERROR: sort/2: Arguments are not sufficiently instantiated." Any ideas? Thanks :) split([],[]). split([H1:H2|T],[H1,H2|NT]) :- split(T,NT). wrapper(L,Processed) :- split(L,L2), sort(L2,Processed).

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• How to get all the updates for a Second Life Object (prim) using LIBOMV

  - by sura

  Hi All, In Second Life, I have an avatar and a primitive object that are moving with changing velocity. I use the LIBOMV library to create a text client to Second Life. Using this LIBOMV text client, I am trying to record the update packets of that avatar and object that are being sent to my text client by the server. I get frequent update packets for the avatar as its velocity changes, but I do not get update packets for the object that frequently, although it has a changing velocity. I would like to know whether there is any special setting I should use in order to solve this problem. /Su

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• How to debug an App on Android with GDBSERVER?

  - by cjserio

  I'm trying to debug a native shared library that my App uses through JNI. I can attach to a running app just fine with "gdbserver --attach pid" but i need to actually launch my app when i launch the gdbserver command. There's a million blog hits on this topic but none of them seem to be clear as to how you launch your app. They all say to just type "gdbserver 10.0.2.2:1234 ./MyProgram" but what exactly is "MyProgram". Is that MyProgram.apk? Is it MyProgram.so? Is it some other file that gets created when the app is installed? If so, what's its path?

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• is there any cross platform process manager tool

  - by lvlv

  I need a program that is able to launch a set of processes according to a schedule/configuration; the program would run in the background and restart the processes in case they crash. There are standard tools for this kind of task on both windows and unix - what I need is a cross platform program which could run on different operating systems using the same configuration. A portable C/C++ library which implements the basic functionality (i.e. create processes, signal process termination events and all that) would be ok too.

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• Struct sockaddr, sin_family is not a member

  - by leon22

  According to this article from msdn ( http://msdn.microsoft.com/en-us/library/windows/desktop/ms740496(v=vs.85).aspx) the struct varies depending on which protocol is selected! Now I want to use this code from http://www.intelliproject.net/articles/showArticle/index/check_tcp_udp_port to check if a port is open or not! Now I have the struct sockaddr as follows: struct sockaddr { ushort sa_family; char sa_data[14]; }; but need this strcuture: struct sockaddr { short sin_family; u_short sin_port; struct in_addr sin_addr; char sin_zero[8]; }; Which changes are necessary? (Ws2_32.lib is linked and following includes #define WIN32_LEAN_AND_MEAN // sockets #include "windows.h" #include <winsock2.h> #include <ws2tcpip.h> Thx

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• Computer graphics: programatically create duotone (or separations)

  - by TarGz

  There are special kind of images called "duotone" which have just two channels. It is mostly used when you want to achive higher quality reproduction - have a printing press with two colors (black , gray). My question is, I have normal gray-scale image, how to convert it to duotone? I know I can tweak the curves in Photoshop - this is not what I'm asking, rather than how to do it programmatically? Perhaps there is a library which can do just that? What about "dot gain compensation"? "Total ink coverage"?

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• Splitting a string into new rows in R

  - by user3703195

  I have a data set like below: Country Region Molecule Item Code IND NA PB102 FR206985511 THAI AP PB103 BA-107603 / F000113361 / 107603 LUXE NA PB105 1012701 / SGP-1012701 / F041701000 IND AP PB106 AU206985211 / CA-F206985211 THAI HP PB107 F034702000 / 1010701 / SGP-1010701 BANG NA PB108 F000007970/25781/20009021 I want to split based the string values in ITEMCODE column on / and create a new row for each entry. For instance, the desired output will be: Country Region Molecule Item Code New row IND NA PB102 FR206985511 FR206985511 THAI AP PB103 BA-107603 / F000113361 / 107603 F000113361 107603 BA-107603 LUXE NA PB105 1012701 / SP-1012701 / F041701000 1012701 SP-1012701 F041701000 IND AP PB106 AU206985211 / CA-F206985211 AU206985211 CA-F206985211 THAI HP PB107 F034702000 / 1010701 / SP-1010701 F034702000 1010701 SP-1010701 BANG NA PB108 F000007970/25781/20009021 F000007970 25781 20009021 I tried the below code library(splitstackshape) df2=concat.split.multiple(df1,"Plant.Item.Code","/", direction="long") but got the Error "Error: memory exhausted (limit reached?)" When i tried strsplit() i got the below error message. Error in strsplit(df1$Plant.Item.Code, "/") : non-character argument Any help from you will be appreciated.

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• CakePHP Shell issue

  - by aboxy

  Hello, I am just getting started with Cakephp shell and running into issues. My cake core library is under path d:/libs/cake My app is setup under d:/servers/htdocs/myapp I wrote a test shell under d:/servers/htdocs/myapp/vendor/shells class ReportShell extends Shell { var $uses = array('Appt'); function main() { echo $this->Appt->find('first'); } } When I try to run this code from d:/servers/htdocs/myapp , It gives me an error Warning: include_once(d:/servers/htdocs/myapp/config/database.php): failed to open stream: No such file or directory in d:/libs/cake\libs\mode l\connection_manager.php on line 23 Warning: include_once(): Failed opening 'd:/servers/htdocs/myapp/config/database.php' for inclusion (include_path='.;D:\work\xampp\php\PEAR') in d:/libs/cake\libs\model\connection_manager.php on line 23 Fatal error: ConnectionManager::getDataSource - Non-existent data source default in d:/libs/cake\libs\model\connection_manager.php on line 102 Reason is that it is trying to find database.php under 'd:/servers/htdocs/myapp/config/' and the correct path is 'd:/servers/htdocs/myapp/app/config/database.php' What am I doing wrong here? thanks

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• Actionscript not running in nested MovieClips in Swf loaded into AIR app.

  - by Stray

  I'm loading content swfs into an Air App. The swfs are loaded into the non-app sandbox, and any communication is via the parent/child sandbox bridge. The swfs have timeline code. This code executes fine. The swfs also have mcs on the timeline - any code inside these mcs, or any child mcs of these mcs, is ignored. Simple traces do not execute below the top level timeline of the loaded swfs. I have tried naming the child mcs. I have tried exporting them in the library. Neither makes any difference. When I run the swf standalone, I see my diagnostic traces. When I load the swf, I only see the traces for the top level timeline. Air app is v1.5 Any clues? I've been bashing into this brick wall for several hours now...

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• How can I generate a list of symbols used by a build product from a particular statically linked lib

  - by morechilli

  Say I have a visual studio project that builds a windows exe or dll from c++ source. The project statically links to several library (.lib) files. I would like to generate the subset of the available functionality in a particular .lib that the project actually links to. A very crude way to achieve this would be to remove the .lib from the linker input list. The error list on the build would then show me all the symbols that could not be found. Is there a better/proper way to generate this list, I'm happy with a solution that can be run as a custom build step in the project or one that runs against a built binary. I've looked at both the linker and dumpbin command line options but have not seen anything appropriate.

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• Are there any open source SimpleTest Test Cases that test PHP SPL interfaces

  - by JW

  I have quite a few objects in my system that implement the PHP SPL Iterator interface. As I write them I also write tests. I know that writing tests is generally NOT a cut 'n paste job. But, when it comes to testing classes that implement Standard PHP Library interfaces, surely it makes sense to have a few script snippets that can be borrowed and dropped in to a Test class - purely to test that particular interface. It seems sensible to have these publicly available. So, I was wondering if you knew of any?

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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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• Generics in custom configuration sections

  - by Jonn

  I tried making a custom configuration class that went on like this: WatcherServiceInfoSection<TWatcherServiceDetailElement> where TWatcherServiceDetailElement is a ConfigurationElement inside it. Now when I call the type in the ConfigSections area of AppConfig I get the error: An error occurred creating the configuration section handler for WatcherServiceInfo: Could not load type 'Library.Common.Utilities.ConfigurationHandler.WatcherServiceInfoSection<ASNDPService.Configuration.WatcherServiceDetailElement>' from assembly Is what I'm doing possible? Can I have generic types in the type attribute for a custom section element? EDIT Additionally, how about ConfigurationElementCollection objects? Like in the above example, how could I do a [ConfigurationProperty("WatcherServiceDetails", IsRequired = true, IsDefaultCollection = true)] [ConfigurationCollection(typeof(TWatcherServiceDetailElement), AddItemName = "WatcherServiceDetail")] public WatcherServiceDetailCollection<TWatcherServiceDetailElement> WatcherServiceDetails I'm aware that type parameters aren't allowed for attributes and that's what I want to know how to do.

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