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• Some stupid warnings

  - by thetna

  I have a number of C source files(both .c and .h files). header files contains a number of functions. Out of those functions, only partially are used in a source .C file.Suppose a.h,b.h are header files and a.c and b.c are .c files. a.h is included in a.c. But only a number of functions those are in a. h are used and rest are not used. After compilation I find following warnings: function XXXX defined but not used. But those XXXX functions which are not used in a.c are used in b.c. So, i can't completely remove those functions too. So , i decided to make a separate file containing only those XXXX functions and included it wherever it is used.Doing this is creating multiple number of header files. Can anybody please suggest me to some effective way to solve this problem.

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• C++ object in memory

  - by Neo_b

  Hello. Is there a standard in storing a C++ objects in memory? I wish to set a char* pointer to a certain address in memory, so that I can read certain objects' variables directly from the memory byte by byte. When I am using Dev C++, the variables are stored one by one right in the memory address of an object in the order that they were defined. Now, can it be different while using a different compiler (like the variables being in a different order, or somewhere else)? Thank you in advance. :-)

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• A tool to determine jar dependencies based on existing code?

  - by geoffeg

  Is there a tool that can determine .jar dependencies given a directory of .jar files and a separate directory of java source code? I need to generate Eclipse .classpath files based on an existing code base that doesn't have any dependencies defined. To be more specific, I've been given a large codebase consisting of a dozen or so J2EE-style projects and a single directory of jar files. My client uses a custom development and build framework that is just too arcane for me to use and get any real work done. The projects do not have any information about their dependencies, either between projects or to jar libraries. I would expect this tool would have to spin through each jar file, indexing the classes available in that file and then go through each file in the project source code tree and match up the dependencies, possibly writing out a .classpath file with the required jar files. I realize this is a rather simplistic view of the operation, as duplicate classes among the jar files and such might make things more difficult.

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• Can I have fixed typed ArrayList in C#, just like C++?

  - by Kazoom

  I have an ArrayList which contains fixed type of objects. However everytime I need to extract an object a particular index, I need to typecast it to my user defined type from object type. Is there a way in C# to declare ArrayList of fixed types just like Java and C++, or is there a work around to avoid the typecasting everytime? Edit: I apologize I forgot mentioning that I require the datastructure to be thread-safe, which List is not. Otherwise I would have just used a normal Array. But I want to save myself from the effort of explicitly locking and unlocking while writing the array. So I thought of using ArrayList, synchronize it, but it requires typecasting every time.

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• How to resolve Resharper's "unused property" warning on properties solely for Display/Value Members?

  - by JYelton

  I have defined two properties "Name" and "ID" for an object which I use for the DisplayMember and ValueMember of a ComboBox with a BindingList datasource. I recently installed Resharper to evaluate it. Resharper is giving me warnings on the object that the two properties are unused. Sample code: BindingList<ClassSample> SampleList = new BindingList<ClassSample>(); // populate SampleList cmbSampleSelector.DisplayMember = "Name"; cmdSampleSelector.ValueMember = "ID"; cmbSampleSelector.DataSource = SampleList; private class ClassSample { private string _name; private string _id; public string Name // Resharper believes this property is unused { get { return _name; } } public string ID // Resharper believes this property is unused { get {return _id; } } public ClassSample(string Name, string ID) { _name = Name; _id = ID; } } Am I doing something wrong or is Resharper clueless about this particular usage?

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• why my array is losing it's contents when I refresh the page?

  - by Fernando SBS

  I have created an: var checkboxFarm = new Array(); then I want to record a checkbox status in that array, as there are 11 checkboxes. Button.addEventListener("click", function() { rp_farmAtivada(index); }, false); when clicked change the variable in the array: function rp_farmAtivada(index) { checkboxFarm[index] = !checkboxFarm[index]; }; but every time I refresh the page it loses all the checkboxes status and I'm aware that all that array gets the "undefined" value. the checkboxFarm array is defined in the beginning of the script, so it should have a global scope. Am I missing something?

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• Passing operator as a parameter

  - by nacho4d

  Hi, I want to have a function that evaluates 2 bool vars (like a truth table) for example: since T | F : T then myfunc('t', 'f', ||); /*defined as: bool myfunc(char lv, char rv, ????)*/ should return true; how can I pass the third parameter? (I know is possible to pass it as a char* but then I will have to have another table to compare operator string and then do the operation which is something I would like to avoid) Is it possible to pass an operator like ^(XOR) or ||(OR) or &&(AND), etc in a function/method? Thanks in advance

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• How to update the following rows after the sum of the previous rows reach a threshold? MySQL

  - by Paulo Faria

  I want to update the following rows after the sum of the previous rows reach a defined threshold. I'm using MySQL, and trying to think of a way to solve this using SQL only. Here's an example. Having the threshold 100. Iterating through the rows, when the sum of the previous rows amount = 100, set the following rows to checked. Before the operation: | id | amount | checked | | 1 | 50 | false | | 2 | 50 | false | | 3 | 20 | false | | 4 | 30 | false | After the operation: | id | amount | checked | | 1 | 50 | false | | 2 | 50 | false | <- threshold reached (50 + 50 = 100) | 3 | 20 | true* | | 4 | 30 | true* | Is it possible to do it with just a SQL query? Do I need a stored procedure? How could I implement it using either solution?

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• Drupal 6 fails to build menu router and links

  - by Xinglin Zhang

  When I enable a new menu in Drupal (for example, mymodule), Drupal should be able to get the menu items from mymodule_menu (hook_menu), process the items and insert the menu items to menu_router and menu_links page. However, my Drupal fails to do so. Each time I enable a module (written by me or modules contributed by others, or core modules), Drupal does not seem to get the new information. The menu items defined in the newly enabled module are not processed and inserted to Drupal's menu system. That means the newly enabled module has no chance to work-- because it's inaccessible. I did fix this by manually insert the menu item information for the new module into the menu_router and menu_links table and the new menu started working. But this is a nightmare if I have to do this each time I enable a module. Any one has ever had the same problem? How to fix this? Thank you in advance.

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• GLOB_BRACE portability?

  - by Pekka

  In this question, I was made aware of glob()'s GLOB_BRACE option that allows for a limited set of regular expressions when searching for files. This looks just like what I need, but according to the manual, GLOB_BRACE is "not available on some Non-GNU Operating systems." Among those seems to be Solaris. I am building an application that is supposed to be as portable as possible, so I need to check out possible problems as early as possible. Does somebody know of other platforms apart from Solaris where GLOB_BRACE is not supported? How about Mac OS = X for example? It's built on top of a Unix. Is every Unix automatically a "GNU" platform as defined in the manual?

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• Sharing a fabfile across multiple projects

  - by Matthew Rankin

  Fabric has become my deployment tool of choice both for deploying Django projects and for initially configuring Ubuntu slices. However, my current workflow with Fabric isn't very DRY, as I find myself: copying the fabfile.py from one Django project to another and modifying the fabfile.py as needed for each project (e.g., changing the webserver_restart task from Apache to Nginx, configuring the host and SSH port, etc.). One advantage of this workflow is that the fabfile.py becomes part of my Git repository, so between the fabfile.py and the pip requirements.txt, I have a recreateable virtualenv and deployment process. I want to keep this advantage, while becoming more DRY. It seems that I could improve my workflow by: being able to pip install the common tasks defined in the fabfile.py and having a fab_config file containing the host configuration information for each project and overriding any tasks as needed Any recommendations on how to increase the DRYness of my Fabric workflow?

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• [MAC] Using a proxy for NSURLConnection

  - by SideSwipe

  Is there any way to get the content of a webfile (namely a .html Document) using a proxy, which is not defined in the system settings? I know that NSURLConnection is the right way to download a web file into a variable and not into a file (for which we should use NSURLDownload), but I don't find an way to use a proxy for it. Are there some inofficial APIs, Librarys or Classes or such I could use for what I want to do? I'm not that pro in Mac Programming, so im searching for something more or less simple to do for me plz. SideSwipe

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• Compiling C Source with Makefile in Windows

  - by humoeba

  I'm trying to compile a downloaded program in Windows. The program is usually run in Linux, but is programmed to also run in Windows (the code has #if defined(_WIN32)'s in it, and claims to work with borland free tools). When I try to use make from the command line, it tells me "Incorrect command line argument: -C". In the makefile, there are many lines that say "make -C" followed by a directory name. Does this syntax not work in Windows? What is a correct way to do this? Is there any way to compile this for native use in Windows with this makefile?

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• Query on the scope of local variables in C

  - by darkie15

  All, Consider the following code: void func(void) { int a; printf ("%d", a); } int main(int argc, char **argv) { int a = 3; func(); printf("%d", a); } According to my understanding, the output should be: <junk value><3> Can anyone please confirm my understanding? My basic query is, does the compiler refer to the outer scope for a variable that has been declared but not defined? Regards, darkie

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• c++: Reference array of maps

  - by donalmg

  I have a function which creates an array of Maps: map<string, int> *pMap And a function which writes maps to the array: int iAddMap(map<string, int> mapToAdd, map<string, int> *m, int i) { m = &(pMap[i]); memcpy(m, mapToAdd, sizeof(map<string, int>)); } And a function to get maps from the array map<string, int>& getMap(int i) { return pMap[i]; } I can write maps to the array without any issue, but every get call results in a seg fault: int val; // val defined after this map<string, int> * pGetMap = &(getMap(val)); Any suggestions on why this is happening?

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• How to decide if a parameter is the click event

  - by sameold

  I have a function which can be called by either a click event or directly. When I call it directly, I need pass it a data parameter, so I've defined the function to accept a parameter to account for the direct call with the parameter. function myFunc(param){ } Within the function, I need to differentiate whether the function was called directly or from the click event, so what I thought I could simply check if param is set. If it's set, then the function is called directly. If it's not set, then it's called from the click event. The problem is that a click event by default passes an event object. So even when the function is called by the click event, param won't be null. So is there a way to check whether the param passed is the click event?

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• how to handle signout when the browser in close in flex 3?

  - by kumar1425

  my project had audit module ,which inlcude each and every action of the user to be recoreded so when the user closes the browser the audit regarding the logout has to be stored in the database i found one solution in the net ,but it is working in my machine's IE but falied to work in the friends machines IE why? the code is: window.onbeforeunload = clean_up; function clean_up() { var flex = document.${application} || window.${application}; flex.myFlexFunction(); } i place this code in the index.template.html file in the html-template foleder under flex src and i place the below code in my main application.mxml file ExternalInterface.addCallback("myFlexFunction",btnLogout); and i defined the logout funtion if any one has solution plz answer me............. thank you..................

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• What is a simple C library for a set of integer sets?

  - by conradlee

  I've got to modify a C program and I need to include a set of unsigned integer sets. That is, I have millions of sets of integers (each of these integer sets contains between 3 and 100 integers), and I need to store these in some structure, lets call it the directory, that can in logarithmic time tell me whether a given integer set already exists in the directory. The only operations that need to be defined on the directory is lookup and insert. This would be easy in languages with built-in support for useful data structures, but I'm a foreigner to C and looking around on Google did (surprisingly) not answer my question satisfactorily. This project looks about right: http://uthash.sourceforge.net/ but I would need to come up with my own hash key generator. This is a standard, simple problem, so I hope there is a standard and simple solution.

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• Add multiple Styles to Silverlight Control

  - by lidermin

  Hello, I'm using silverlight and I defined two styles for the page: ExpanderBottomRightButtonStyle ExpanderScaleStyle Now I want to add those two styles to the same control: <controls:Expander x:Name="expBRButton" Grid.Row="1" Grid.Column="2" Margin="5" Style="{StaticResource ExpanderBottomRightButtonStyle}"> <controls:Expander.Content> <Button Content="&lt;Button&gt;"></Button> </controls:Expander.Content> </controls:Expander> I don't want to join the two styles in one, cause I need them separately too. I thought something like: Style="{StaticResource ExpanderBottomRightButtonStyle ExpanderScaleStyle}" But it's not possible. How should I do this? I'm new on Silverlight 3. Thanks in advance.

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• What's the best way to return a subset of a list

  - by Pikrass

  I have a list of tasks. A task is defined by a name, a due date and a duration. My TaskManager class handles a std::list<Task> sorted by due date. It has to provide a way to get the tasks due for a specific date. How would you implement that ? I think a good way (from API point of view) would be to provide a std::list<Task>::iterator pair. So I would have a TaskManager::begin(date) method. Do you think this method should get the iterator by iterating from the start of the list until it finds the first task due on that date, or by getting it from a std::map<date, std::list<Task>::iterator> (but then we have to keep it up-to-date when adding or removing tasks) ? And then, how could I implement the TaskManager::end(date) method ?

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• i have problem to get new inserted columnID using sql

  - by newBie

  hi I have an identity column defined as int in sql . I use SCPOE_IDENTITY () to get the new inserted column id. this is sample of my code: Dim sql As String = "insert into infoHotel (nameHotel, knownAs1, knownAs2, knownAs3, knownAs4, streetAddress) values (N" & _ FormatSqlParam(hotel) & ",N" & _ FormatSqlParam(KnownAs(0)) & ",N" & _ FormatSqlParam(KnownAs(1)) & ",N" & _ FormatSqlParam(KnownAs(2)) & ",N" & _ FormatSqlParam(KnownAs(3)) & ",N" & _ FormatSqlParam(StreetAddress) & _ "SELECT CAST(scope_identity() AS int)")" Dim objCommand1 As New SqlCommand(sql, conn) Dim infoID As Integer = objCommand1.ExecuteScalar() my problem here is, i cant get the infoID's value..is my code wrong?..some help plzz.. im using vb.net n sql

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• Zend Database Adapter - Complex MySQL Query

  - by Sonny

  I have defined a function in my Navigation model that executes a query, and I was wondering if there's a more "Zendy" way of generating/executing the query. The query I'm using was proposed by Bill Karwin on another thread here for setting arbitrary record order. I tried using a prepared statement, but the values in the SIGN() function got quoted. I'm using the PDO adapter for MySQL. /** * */ public function setPosition($parentId, $oldPosition, $newPosition) { $parentId = intval($parentId); $oldPosition = intval($oldPosition); $newPosition = intval($newPosition); $this->getAdapter()->query(" UPDATE `navigation` SET `position` = CASE `position` WHEN $oldPosition THEN $newPosition ELSE `position` + SIGN($oldPosition - $newPosition) END WHERE `parent_id` = $parentId AND `position` BETWEEN LEAST($oldPosition, $newPosition) AND GREATEST($oldPosition, $newPosition) "); return $this; }

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• How to I count key collisions when using boost::unordered_map?

  - by Nikhil

  I have a data structure with 15 unsigned longs, I have defined a hash function using hash_combine as follows: friend std::size_t hash_value(const TUPLE15& given) { std::size_t seed = 0; boost::hash_combine(seed, val1); boost::hash_combine(seed, val2); ... return seed; } I insert a large number of values into a boost::unordered_map but the performance is not good enough. Probably, I could do better with an alternative hashing function. To confirm this, I need to check how many collisions I am getting. How do I do this?

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• Rails Variable across all controller actions

  - by bob

  Hello, This should be a very simple rails question. I have a variable like the following. @administration = Administration.first I want this variable to be accessible through every controller action across all my controllers so for example if I have a Product controller and inside of it I have the usual CRUD actions, I want the @administration variable as defined above to be put into all the CRUD actions. (It would not be needed in destroy or create or update). I have many controllers throughout my project and I was wondering if there is an easier way than adding it manually through all of the actions that I want it in. I tried a global variable $administration = Administration.first but I run into an issue where it is not updated when I update the actual content of the Administration.first table. Also, I would like to avoid global variables. Any help would be much appreciated. Thanks! :)

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• How to Execute Base Class's Method Before Implementors's Method?

  - by DaveDev

  I have the following page public partial class GenericOfflineCommentary : OfflineFactsheetBase { } where OfflineFactsheetBase is defined as public class OfflineFactsheetBase : System.Web.UI.Page { public OfflineFactsheetBase() { this.Load += new EventHandler(this.Page_Load); this.PreInit += new EventHandler(this.Page_PreInit); } protected void Page_PreInit(object sender, EventArgs e) { if (Request.QueryString["data"] != null) { this.PageData = StringCompressor.DecompressString(Request.QueryString["data"]); this.ExtractPageData(); } } } OfflineFactsheetBase has the following virtual method: public virtual void ExtractPageData() { // get stuff relevant to all pages that impmement OfflineFactsheetBase } which is implemented in all pages that impmement OfflineFactsheetBase as follows: public partial class GenericOfflineCommentary : OfflineFactsheetBase { public override void ExtractPageData() { // get stuff relevant to an OfflineCommentary page. } } Currently, only GenericOfflineCommentary's ExtractPageData() is firing. How can I modify this to first run OfflineFactsheetBase's ExtractPageData() and then GenericOfflineCommentary's? edit: I'm trying to avoid having to call base.ExtractPageData() in every implementor. Is this possible?

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