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  • Python extension building with boost

    - by user1544053
    Hey guys I'm fairly new to boost c/c++ library. I downloaded boost library and build the library. I created a very simple python library in c++ using boost interface (actually it is example code given in the documentation). I built it into a dll file. In the documentation it reads that this dll is exposed to python and they just show the import function in python and include the created library. I don't understand how to expose that dll to python and load the library inside in tradition ('import') manner. In case if you wanna look at the code then here it is: #include <boost/python.hpp> char const* greet() { return "hello, world"; } BOOST_PYTHON_MODULE(hello_ext) { using namespace boost::python; def("greet", greet); } Please help I really want to build applications with c/c++ and python. I simply want to use hello_ext as: >>>import hello_ext >>>print hello_ext.greet() Thank you.

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  • Simple wrapping of C code with cython

    - by Jose
    Hi, I have a number of C functions, and I would like to call them from python. cython seems to be the way to go, but I can't really find an example of how exactly this is done. My C function looks like this: void calculate_daily ( char *db_name, int grid_id, int year, double *dtmp, double *dtmn, double *dtmx, double *dprec, double *ddtr, double *dayl, double *dpet, double *dpar ) ; All I want to do is to specify the first three parameters (a string and two integers), and recover 8 numpy arrays (or python lists. All the double arrays have N elements). My code assumes that the pointers are pointing to an already allocated chunk of memory. Also, the produced C code ought to link to some external libraries.

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  • How fast are App Engine db.get(keys) and A.all(keys_only=True).filter('b =', b).fetch(1000)?

    - by Liron Shapira
    A db.get() of 50 keys seems to take me 5-6 seconds. Is that normal? What is the time a function of? I also did a A.all(keys_only=True).filter('b =', b).fetch(1000) where A.b is a ReferenceProperty. I did 50 such round trips to the datastore, with different values of b, and the total time was only 3-4 seconds. How is this possible? db.get() is done in parallel, with only one trip to the datastore, and I would think that looking up an entity by key is a faster operation than fetch.

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  • C# & C++, runtime error when call C++ dll from C#

    - by 5YrsLaterDBA
    I have written a C++ wrapper DLL for C# to call. The DLL was tested and worked fine with my C++ test program. now integrated with C#, I got runtime error and crashed. Cannot use debugger to see more details. The C++ side has only one method: #ifdef DLLWRAPPERWIN32_EXPORTS #define DLLWRAPPERWIN32_API __declspec(dllexport) #else #define DLLWRAPPERWIN32_API __declspec(dllimport) #endif #include "NB_DPSM.h" extern "C" { DLLWRAPPERWIN32_API int WriteGenbenchDataWrapper(string fileNameToAnalyze, string parameterFileName, string baseNameToSaveData, string logFileName, string& message) ; } in the C# side, there is a definition, [DllImport("..\\..\\thirdParty\\cogs\\DLLWrapperWin32.dll")] public static extern int WriteGenbenchDataWrapper(string fileNameToAnalyze, string parameterFileName, string baseNameToSaveData, string logFileName, ref string message); and a call: string msg = ""; int returnVal = WriteGenbenchDataWrapper(rawDataFileName, parameterFileName, outputBaseName, logFileName, ref msg); I guess there must be something wrong with the last parameter of the function. string& in C++ should be ref string in C#?

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  • Getting specific values with regex

    - by David
    I need to knowingly isolate each row of the vCard and get its value. For instance, I want to get "5555" from X-CUSTOMFIELD. So far, my thoughts are: "X-CUSTOMFIELD;\d+" I have been looking at some tutorials and I am a little confused with what function to use? What would my regex above return? Would it give me the whole line or just the numerical part (5555)? I was thinking I i get the whole row, I can use substring to get the digits? BEGIN:VCARD VERSION:2.1 N:Last;First; FN:First Last TEL;HOME;VOICE:111111 TEL;MOBILE;VOICE:222222 X-CUSTOMFIELD;5555 END:VCARD

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  • jQuery: event that tracks click in browser autocomplete

    - by Fernando
    I have a keyup event on an input. This event works fine for auto complete when you select a value and press enter. But it doesn't work when you click at an auto complete value. Is there an event that i can use in such case? I already tried the change one but it doesn't work. Thanks! Edit: Maybe i was not clear but i am referring to the autocomplete feature that browsers have. I am not trying to build my own. Example: I have the following event: $('.product').keyup(searchByProduct); When user clicks at this input the old values that he already typed shows up ( it's the browser that does this ). If he clicks on one of the values, the function searchByProduct is not called. Which event do i have to register to track this click ( and that the input content has changed )?

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  • Increase the TCP receive window for a specific socket

    - by rursw1
    Hi, How to increase the TCP receive window for a specific socket? - I know how to do so for all the sockets by setting the registry key TcpWindowSize, but how do do that for a specific one? According to MSFT's documents, the way is Calling the Windows Sockets function setsockopt, which sets the receive window on a per-socket basis. But in setsockopt, it is mentioned about SO_RCVBUF : Specifies the total per-socket buffer space reserved for receives. This is unrelated to SO_MAX_MSG_SIZE and does not necessarily correspond to the size of the TCP receive window. So is it possible? How? Thanks.

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  • Sorting a meta-list by first element of children lists in Python

    - by thismachinechills
    I have a list, root, of lists, root[child0], root[child1], etc. I want to sort the children of the root list by the first value in the child list, root[child0][0], which is an int. Example: import random children = 10 root = [[random.randint(0, children), "some value"] for child in children] I want to sort root from greatest to least by the first element of each of it's children. I've taken a look at some previous entries that used sorted() and a lamda function I'm entirely unfamiliar with, so I'm unsure of how to apply that to my problem. Appreciate any direction that can by given Thanks

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  • Find all html characters in drop-down option text and replace them via jQuery

    - by Jon Harding
    I have a dropdown menu that pulls in text from a database column. The database column can include HTML mark-up. In the drop-down I obviously don't need that in the text. I am working on some jquery and it partially accomplished what I'm looking for. However, it seems to only be replacing the first instance of each character $('select option').each(function() { this.text = this.text.replace('&nbsp;', ' '); this.text = this.text.replace('<div>', '' ); this.text = this.text.replace('</div>', '' ); }); Here is the HTML for the drop-down: <select name="ctl00$SubPageBody$ClassList" id="ctl00_SubPageBody_ClassList"> <option value="196">Four Week Series: July 19, 2012, 11:00am-12:00pm&<div>July 26, 2012, 11:00am-12:00pm&nbsp;</div><div>August 2, 2012, 11:00am-12:00pm</div><div>August 9, 2012, 11:00am-12:00pm</div></option> </select>

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  • Possible to bind an event listener to a (hypothetical) onChangeInnerHTML event?

    - by DustMason
    In my app, I have an OL tag whose contents are changed by various other dynamic events. Is there some way to put a listener on that OL so that I can execute a function whenever its contents are altered in any way? In this example I need to update a count of items in the list which appears in another spot in the interface. I am using jQuery if that helps. The contents of the OL are being changed with OL.append() and LI.remove(), in case those methods have some special events that I don't know about Thanks!

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  • Copy and pasting code into the Python interpreter

    - by wpeters
    There is a snippet of code that I would like to copy and paste into my Python interpreter. Unfortunately due to Python's sensitivity to whitespace it is not straightforward to copy and paste it a way that makes sense. (I think the whitespace gets mangled) Is there a better way? Maybe I can load the snippet from a file. This is just an small example but if there is a lot of code I would like to avoid typing everything from the definition of the function or copy and pasting line by line. class bcolors: HEADER = '\033[95m' OKBLUE = '\033[94m' OKGREEN = '\033[92m' WARNING = '\033[93m' FAIL = '\033[91m' ENDC = '\033[0m' def disable(self): self.HEADER = '' # I think stuff gets mangled because of the extra level of indentation self.OKBLUE = '' self.OKGREEN = '' self.WARNING = '' self.FAIL = '' self.ENDC = ''

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  • List<T> add method in C#

    - by Nano HE
    Hello. As I know. List Add method works as below. List<string> cities = new List<string>(); cities.Add("New York"); cities.Add("Mumbai"); cities.Add("Berlin"); cities.Add("Istanbul"); If I designed the data structure as this List<object> lstObj = new List<object>(); if (true) // string members { cities.Add("New York"); cities.Add("Istanbul"); } else // List obj members here { List<object> AListObject= new List<object>(); cities.Add(AListObject); // how to handle this? } Does the List Add method works or not if I add different types members in the same function.

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  • How to get jQuery animateNumber to pull value dynamically?

    - by mcography
    I am trying to implement jQuery animateNumber, and I have it working like the demo just fine. However, I want to modify it so that it pulls the number from the HTML, rather than setting it in the script. I tried the following, but it just shows "NAN." What am I doing wrong? <div class="stat-title animate-number">$16,309</div> <script> $('.animate-number').each(function(){ var value = new Number; // Grab contents of element and turn it into a number value = $(this).text(); value = parseInt(value); // Set the starting text to 0 $(this).text('0'); $(this).animateNumber( { number: value, }, 1000 ) }); </script>

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  • Simplest way to extend doctrine for MVC Models

    - by RobertPitt
    Im developing my own framework that uses namespaces. Doctrine is already integrated into my auto loading system and im now at the stage where ill be creating the model system for my application Usually i would create a simple model like so: namespace Application\Models; class Users extends \Framework\Models\Database{} which would inherit all the default database model methods, But with Doctrine im still learning how it all works, as its not just a simple DBAL. I need to understand whats the part of doctrine my classes would extend where i can do the following: namespace Application\Models; class Users Extends Doctrine\Something\Table { public $__table_name = "users"; } And thus within the controller i would be able to do the following: public function Display($uid) { $User = $this->Model->Users->findOne(array("id" => (int)$id)); } Anyone help me get my head around this ?

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  • Gtting X-windows error while runing gtk application.

    - by PP
    I have written one gtk application but i am getting following X Windows error while running it: The program 'TestApp' received an X Window System error. This probably reflects a bug in the program. The error was 'BadMatch (invalid parameter attributes)'. (Details: serial 222 error_code 8 request_code 2 minor_code 0) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) What might be the cause of this error? I have written this app in GTK+ and C. Thank, PP.

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  • Why is the code adding 7 if the number is not >= 0

    - by Hugo Dozois
    I've got this program in MIPS assembly which comes from a C code that does the simple average of the eigth arguments of the function. average8: addu $4,$4,$5 addu $4,$4,$6 addu $4,$4,$7 lw $2,16($sp) #nop addu $4,$4,$2 lw $2,20($sp) #nop addu $4,$4,$2 lw $2,24($sp) #nop addu $4,$4,$2 lw $2,28($sp) #nop addu $2,$4,$2 bgez $2,$L2 addu $2,$2,7 $L2: sra $2,$2,3 j $31 When the number is positve, we directly divided by 8 (shift by 3 bits), but when the number is negative, we first addu 7 then do the division. My question is why do we add 7 to $2 when $2 is not >= 0 ? EDIT : Here is the C code : int average8(int x1, int x2, int x3, int x4, int x5, int x6, int x7, int x8) { return (x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8) / 8; } note : the possible loss in the division since we are using ints instead of floats or doubles is not important in this case.

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  • Segfault when calling a method c++

    - by shuttle87
    I am fairly new to c++ and I am a bit stumped by this problem. I am trying to assign a variable from a call to a method in another class but it always segfaults. My code compiles with no warnings and I have checked that all variables are correct in gdb but the function call itself seems to cause a segfault. The code I am using is roughly like the following: class History{ public: bool test_history(); }; bool History::test_history(){ std::cout<<"test"; //this line never gets executed //more code goes in here return true; } class Game{ private: bool some_function(); public: History game_actions_history; bool local_variable; }; bool Game::some_function(){ local_variable = game_actions_history.test_history(); if (local_variable == true){ return true; } else{ return false; } } Any tips or advice is greatly appreciated!

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  • Aren't passwords written in inputbox vulnerable through a stack trace ?

    - by loursonwinny
    Hello, I am not a guru of the stack tracing, at all. I even don't know how to get some. Anyway, I am wondering if entering a password entered in an inputbox is safe. Can't it be retrieved by getting a stack trace ? A password entered that way will be found in many places : Caption property of the TEdit Result of the function which creates the inputbox probably, a variable that stores the Result of the InputBox Command etc... If the answer is "yes, it is a vulnerability", then my world collapses :p. What can be done to avoid that vulnerability hole ? NOTE : The InputBox is an example but it can be with a "homebrewed" login prompt. InputBox is a Delphi command but I haven't tagged the question with the Delphi tag because I suppose that the question concerns any language. Thanks for reading

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  • How do I create a user history?

    - by ggfan
    I want to create a user history function that allows shows users what they done. ex: commented on an ad, posted an ad, voted on an ad, etc. How exactly do I do this? I was thinking about... in my site, when they log in it stores their user_id ($_SESSION['user_id']) so I guess whenever an user posts an ad(postad.php), comments(comment.php), I would just store in a database table "userhistory" what they did based on whenever or not their user_id was activate. When they comment, I store the user_id in the comment dbc table, so I'll also store it in the "userhistory" table. And then I would just queries all the rows in the dbc for the user to show it Any steps/improvements I can make? :)

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  • How to read data between two html tags as text.

    - by vijay.shad
    Hi, I am working on a project which needs to extract text form a predefined div tag. My requirement is to send the content in the target div in a email body. I have to use javascript or php for this task. The Process : When a given link will be clicked; a javascript function will trigger and read that target div. The content of the div will be then submitted to server in dynamic form. What options I have to get this task done? Thanks.

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  • js object problem

    - by haltman
    Hi everybay! I use an object to check that a group of radio buttons have a precise value like set on "rule" object. Here is an example: arr = {a:"1", b:"1", c:"1", c:"2"}; //that's my object rule var arr2={}; //here I create my second array with charged value $("#form_cont input:checked").each(function() { arr2[$(this).attr("name")]=$(this).val(); }); //here I make the check for (k in arr2) { if (typeof arr[k] !== 'undefined' && arr[k] === arr2[k]) { $("#form_cont li[name$='"+k+"']").css('background-color', ''); } else { $("#form_cont li[name$='"+k+"']").css('background-color', 'pink'); } } The problem is when I have to check the "c" key I get last the one (2) and not the right value how that may e 1 or 2 thanks in advance ciao, h.

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  • javascript - switch not working

    - by Fernando SBS
    function FM_log(level, text) { // caso não seja log total escolhe o que loga var log = false; switch (level) { case "addtoprio()":log = true; case "alternaTropas()":log = false; case "sendtroops()":log = false; defalt: log = false; } if ((logTotal == false) && (log == true)) GM_log(horaAtual() + " - "+level+", "+text); else if (logTotal == true) GM_log(horaAtual() + " - "+level+", "+text); } how to do that switch is a way it works?

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  • not work jquery for for input value

    - by Mohammad
    main code : var clone = div.clone(); clone.attr('id', sabad_kala_id); $('.content').append(clone); $('div#'+sabad_kala_id).replaceWith('<tr id='+sabad_kala_id+'><td width="50"><a class="del_kala" id='+sabad_kala_id+'><img src="images/delete.png" alt="delete" /></a></td><td width="50">1.</td><td width="388">'+title+'</td><td width="80" clas="mm"><input class="count" type="text" value='+count+' /></td><td width="100">'+price+' $</td><td width="120">'+price_count+' $</td></tr>'); and this code run perfect after append and replace , user can edit input.count in table and below code have run : ('input.count').keyup(function(e){ alert(test); }); but this code not work :(

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  • emacs: is there a semantic-jump-to-declaration (using semantic.el)?

    - by Cheeso
    Suppose I am editing a buffer containing C code. I have started semantic with semantic-load-enable-code-helpers . I have point placed on the name of a function . If I then invoke senator-jump I can jump to the place where that fn is first declared, in that module. What if it is an extern? Is it possible to use senator to jump to the definition of the fn, which resides in a separate module? Thanks.

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  • Get array of elements from event

    - by Anton
    I have few nested DIV elements. For example: <div id='id1'><div id='id2'>content</div></div> I attach event to DIVs event handler using jQuery: $('div').click(function () { //some code }); There will be two events when user click on content. So there will be two simultaneous events. Is it possible to get inside event handler array of objects (DIVs) what have click event? May be it is possible using other framework but jQuery?

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