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  • Creating a bitmask parameter for a function or method

    - by synic
    I noticed a lot of Android functions have a parameter that you can pass in that's a bitmask, for different options, like on PendingIntent, you can pass in things like you can call getActivity() with PendingIntent.FLAG_CANCEL_CURRENT|PendingIntent.FLAG_NO_CREATE. I'm wondering how I can create a function that has a parameter like this?

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  • Python - How to pickle yourself?

    - by Mark
    I want my class to implement Save and Load functions which simply do a pickle of the class. But apparently you cannot use 'self' in the fashion below. How can you do this? self = cPickle.load(f) cPickle.dump(self,f,2)

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  • How can I sort just part of a list using vb .net?

    - by Eyal
    In VB .Net, the Generics Lists have a sort function that accepts IComparer or Comparison. I'd like to sort just part of list. Hopefully I can specify the start index, count of elements to sort, and a lambda function. It looks like you can only use lambda functions to do this if you're sorting the entire list. Is that right or did I miss something?

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  • Create a UIView Subclass that calls a delegate function whenever it's parent viewController appears?

    - by Andrew Johnson
    UIViewControllers have viewWillAppear, viewDidDisappear, etc. delegate methods. I would like to create a UIView subclass that can be added to a viewController's view, and when that UIViewController apears or disappears, a delegate function is called. I could easily do this by putting function calls in the UIViewController viewWillAppear/viewWillDisappear delegate functions, but how can I encapsulate this behavior in the UIView?

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  • wrong operator() overload called

    - by user313202
    okay, I am writing a matrix class and have overloaded the function call operator twice. The core of the matrix is a 2D double array. I am using the MinGW GCC compiler called from a windows console. the first overload is meant to return a double from the array (for viewing an element). the second overload is meant to return a reference to a location in the array (for changing the data in that location. double operator()(int row, int col) const ; //allows view of element double &operator()(int row, int col); //allows assignment of element I am writing a testing routine and have discovered that the "viewing" overload never gets called. for some reason the compiler "defaults" to calling the overload that returns a reference when the following printf() statement is used. fprintf(outp, "%6.2f\t", testMatD(i,j)); I understand that I'm insulting the gods by writing my own matrix class without using vectors and testing with C I/O functions. I will be punished thoroughly in the afterlife, no need to do it here. Ultimately I'd like to know what is going on here and how to fix it. I'd prefer to use the cleaner looking operator overloads rather than member functions. Any ideas? -Cal the matrix class: irrelevant code omitted class Matrix { public: double getElement(int row, int col)const; //returns the element at row,col //operator overloads double operator()(int row, int col) const ; //allows view of element double &operator()(int row, int col); //allows assignment of element private: //data members double **array; //pointer to data array }; double Matrix::getElement(int row, int col)const{ //transform indices into true coordinates (from sorted coordinates //only row needs to be transformed (user can only sort by row) row = sortedArray[row]; result = array[usrZeroRow+row][usrZeroCol+col]; return result; } //operator overloads double Matrix::operator()(int row, int col) const { //this overload is used when viewing an element return getElement(row,col); } double &Matrix::operator()(int row, int col){ //this overload is used when placing an element return array[row+usrZeroRow][col+usrZeroCol]; } The testing program: irrelevant code omitted int main(void){ FILE *outp; outp = fopen("test_output.txt", "w+"); Matrix testMatD(5,7); //construct 5x7 matrix //some initializations omitted fprintf(outp, "%6.2f\t", testMatD(i,j)); //calls the wrong overload }

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  • Android - read and delete new SMS of a specific sender only

    - by John
    I'm trying to write the next function: 1) Send SMS to a service number 2) Read the response SMS content (the service's auto sent-back message that tells me if I succeed/failed to turn on the service) 3) Delete the service's auto-sent SMS I know how to do the first step, and I should be able to do the second with both: getMessageBody () getOriginatingAddress () but: 1) how can I refer the last incoming message to use the above functions? 2) how can I delete that specific message? Thanks, John

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  • C#, Display plain text in a form

    - by daemonfire300
    I ve made this simple drawing to explain my needs: Plain Text in C# I can only find rather "complex" functions, like RTF Text box etc. I couldn't figure out how to display "plain text" in a Form1.cs (I do not talk about HTML to WinForm) (Search did not return any useful results)

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  • Convert number into words using flex.

    - by charlie
    Hi I am trying to convert an entry using a numeric stepper in flex into words to display in a textarea. i.e a user uses the stepper to enter "89" as a value and in the text area the words "Eighty nine" are displayed. After much searching i haven't found anything that helps - a few javascript functions but that is all. any help sample code would be much appreciated. thanks in advance.

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  • Android: how to convert a Drawable to Bitmap

    - by Rob
    How can I convert a Drawable to a Bitmap? I would like to set a certain drawable as the device's wallpaper, but all wallpaper functions accept Bitmaps only (I cannot use WallpaperManager - I'm pre 2.1). Also, my drawables are downloaded from the web and do not reside in R.drawable. Thanks, Rob

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  • Best way to ensure accurate timing with C

    - by Paul
    I am a beginning C programmer (though not a beginning programmer) looking to dive into a project to teach myself C. My project is music-based, and because of this I am curious whether there are any 'best practices' per-se, when it comes to timing functions.

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  • What happens in memory when a C++ class is instantiated

    - by Jo Bucher
    I'm interested in the nuts and boltw of C++ and I wondered what actually changes when an object is instantiated. I'm particularly interested if the functions are then added to memory, if they are there from runtime or if they are never stored in memory at all. If anyone could direct me to a good site on some of the core bolts of C and C++, I'd love that too. Thanks, Jo

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  • How to auto-generate externs for the Google Closure Compiler

    - by ivo
    Suppose you are working in a javascript project with several external library dependencies, and want to compile your sources using the Google Closure Compiler in ADVANCED_OPTIMIZATIONS mode. Since in this mode the compiler will rename your code calls to the external libraries objects and functions, you must provide externs, to prevent this renaming from happening. But, it is a lot of work to produce the externs by hand, so, what is the best way to auto-generate the appropriate extern from a given javascript lib?

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  • ebook reader for programming books?

    - by Martin
    Are the current ebook readers good enough for reading programming books (containing diagrams, source-code, screenshots, and so on)? How good are the search functions or the possibilities to set bookmarks, to use a book as a reference? I'd like to hear opinions of ebook reader owners to help me decide whether or not I should buy an ebook reader. (I know this question already exists, but it's over one year old and new ebook readers are now available)

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  • Function-Local Static Const variable Initialization semantics.

    - by Hassan Syed
    The questions are in bold, for those that cannot be bothered reading a question in depth. This is a followup to this question. It is to do with the initialization semantics of static variables in functions. Static variables should be initialized once, and their internal state might be altered later - as I (currently) do in the linked question. However, the code in question does not require the feature to change the state of the variable later. Let me clarrify my position, since I don't require the string object's internal state to change. The code is for a trait class for meta programming, and as such would would benifit from a const char * const ptr -- thus Ideally a local cost static const variable is needed. My educated guess is that in this case the string in question will be optimally placed in memory by the link-loader, and that the code is more secure and maps to the intended semantics. This leads to the semantics of such a variable "The C++ Programming language Third Edition -- Stroustrup" does not have anything (that I could find) to say about this matter. All that is said is that the variable is initialized once when the flow of control of the thread first reaches the code. This leads me to ponder if the following code would be sensible, and if not what are the intended semantics ?. #include <iostream> const char * const GetString(const char * x_in) { static const char * const x = x_in; return x; } int main() { const char * const temp = GetString("yahoo"); std::cout << temp << std::endl; const char * const temp2 = GetString("yahoo2"); std::cout << temp2 << std::endl; } The following compiles on GCC and prints "yahoo" twice. Which is what I want -- However it might not be standards compliant (which is why I post this question). It might be more elegant to have two functions, "SetString" and "String" where the latter forwards to the first. If it is standards compliant does someone know of a templates implementation in boost (or elsewhere) ?

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  • Format fixed-format text file lines

    - by EugeneP
    there's a text file first second third 1 2 3 yes no ok hmmmmmmm yep_a_long_word_it_is ahahahahahahha what java functions /libs to use to align words so that they are looked like this (fixed width based on the longest column's length), let's say center align: first second third 1 2 3 yes no ok hmmmmmmm yep_a_long_word_it_is ahahahahahahha

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  • sequence and merge jpeg images using python ?

    - by DILi
    im doing a project as part of academic programme.Im doing this in linux platform.I have converted a few pdf files in to html and jpeg images using pdftohtml.now i need to sequence the jpeg images depending on some conditions and to merge them .how can i do this using python?.if anyone can provide any such python script which have done any functions similar to this then it will be very helpful.

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  • ruby-on-rails: route not found in partial

    - by cbrulak
    I have a controller: twitter_status with two functions: tweet_post tweet_comment in routes.rb I have map.resources :twitter_status In my show post view, I have a partial: _show and _show_comment In _show I have: tweet_post_twitter_status_path (...) and that works fine. But in the in _show_comment partial I have: tweet_comment_twitter_status_path (...) but I have a NoMethodError in the show.html.erb view. Any ideas?

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  • Python: using doctests for classes

    - by Adam Matan
    Hi, Is it possible to use Python's doctest concept for classes, not just functions? If so, where shall I put the doctests - at the class' docstring, or at the constructor's docstring? To clarify, I'm looking for something like: class Test: """ >>> a=Test(5) >>> a.multiply_by_2() 10 """ def __init__(self, number): self._number=number def multiply_by_2(self): return self._number*2 Thanks in advance, Adam

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  • How to properly read 16 byte unsigned integer with BinaryReader

    - by Brent
    I need to parse a binary stream in .NET to convert a 16 byte unsigned integer. I would like to use the BinaryReader.ReadUIntXX() functions but there isn't a BinaryReader.ReadUInt128() function available. I assume I will have to roll my own function using the ReadByte function and build an array but I don't know if this is the most efficient method? Thanks!

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  • jquery block UI malfunction on ajax loading event

    - by Ygam
    problem: trigger errored when block UI is called on this code (function($){ function preloader() { $('a#preloader').click(function(e){ e.preventDefault(); var url = base_url + 'runtest/preloader'; $('div#content').load(url, preloaderCallback); }); } function remotePreload() { $('a#remotepreload').click(function(e){ e.preventDefault(); var object = $(this); object.data('clicked', 'yes'); var url = base_url + 'runtest/remote_preloader'; $('div#content').load(url); }); } /* * callback functions */ function preloaderCallback() { $('div.imageholder img').hide(); $('div.imageholder img').each(function(){ var img = new Image(); var sursa = $(this).attr('src'); var parent = $(this).parent(); var preloaderSource = '<img src="' + base_url + 'media/images/preloader.gif' + '" alt="loader"/>'; parent.append(preloaderSource); $(img).load(function(){ parent.append($(this)); $(this).hide().fadeIn(500); $(this).siblings().remove(); }).attr('src', sursa); }); } function blocker() { $('#content').block(); } function handlePageLoad() { $('a#remotepreload').ajaxStart(function(e){ var elem = $(e.target); if (elem.data('clicked') == 'yes') { // error when blocker() function is called here alert('Started'); } }); $('a#remotepreload').ajaxComplete(function(e){ var elem = $(e.target); if (elem.data('clicked') == 'yes') { elem.removeData('clicked'); alert('Ended'); } }); } // call onready functions $(function(){ preloader(); remotePreload();handlePageLoad(); }); })(jQuery); // here's the error from firefox's debugger uncaught exception: [Exception... "Could not convert JavaScript argument arg 0" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: http://localhost/testsuite/media/js/jquery.min.js :: anonymous :: line 115" data: no] here's the html markup <div id="wrap"> <div id="header"> <?= $header ?> </div> <div id="content"> <?= $content ?> </div> <div id="sidebar"> <?= $sidebar ?> </div> <div id="footer"> <?= $footer ?> </div> </div> EDIT I was using Jquery 1.4.1 when this happened. Switched back to 1.3 and everything went back to normal.

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