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  • Emacs on Windows for C++ development configuration?

    - by rbnn
    Has anyone set up cygwin and some emacs to work well under a 64-bit Windows 7? I tried downloading cygwin recently, and by default not even dired works reliably, there are odd shell prompt characters, I get a lot of warnings, in one case C-c was read as C-g and caused various errors. (Neither xemacs nor emacs worked for me, where by "work" I mean that dired and shell work, and without warnings). I just want the usual emacs development tools: gdb-mode, shell-mode, compiling, tag-search to work as normal. I was hoping someone who has done this recently with cygwin could share whatever relevant shell files, emacs files, environment variables, and so on to make this all work. Should all these things just work out of the box?

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  • Alternatives to Java bytecode instrumentation

    - by Rafael Regis
    I'm starting a project that will have to instrument java applications for coverage purposes (definition-usage of variables, etc). It has to add trace statements and some logic to the application and maybe remove statements. I have searched for ways of instrument Java code and what I always find is about bytecode instrumentation. My question is: It's the only way to instrument Java applications? There is any other way to do that? What are the advantages of bytecode instrumentation over the others? I'll probably use the bytecode solution, but I want to know what are the problems with the other approaches (if any) to decide precisely. Thanks!

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  • Check if checkbox is checked or not (ASPX)

    - by cthulhu
    I have the following code: (some.aspx.cs) if(Page.IsPostBack) { bool apple2 = false; bool pizza2 = false; bool orange2 = false; if (apple.Checked) apple2 = true; if (pizza.Checked) pizza2 = true; if (orange.Checked) orange2 = true; } (some.aspx) <tr> <td>Food:</td> <td>Apple <input type="checkbox" name="food" id="apple" value="apple" runat="server" />Pizza <input type="checkbox" name="food" id="pizza" value="pizza" runat="server" />Orange <input type="checkbox" name="food" id="orange" value="orange" runat="server" /></td> Now, i send the Boolean variables to SQL database. The problem is only with unchecked boxes. I mean, when you check some checkboxes it sends it as true (and that's right) but when i uncheck them it remains the same (true).

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  • Sound plays multiple times at once

    - by Jr. Mathews
    I'm having trouble with sound in Flash. I may have went about coding the wrong way, because most of my codes are on frames. So, I have these two variables var outsideDay:Sound = new daysong(); var outsideNight:Sound = new nightsong(); And I want to play these songs on a specific frame. However, the sounds play sporadically, like 50 times at once. I think it's because I have other codes that link to the frames with a Enter_Frame function. How can I get the sounds to loop and not play multiple times at once?

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  • R: how can I concatenate a list?

    - by John
    I'm trying to produce a single variable which is a concatenation of two chars e.g to go from "p30s4" "p28s4" to "p30s4 p28s4". I've tried cat and paste as shown below. Both return empty variables. What am I doing wrong? > blah = c("p30s4","p28s4") > blah [1] "p30s4" "p28s4" > foo = cat(blah) p30s4 p28s4 > foo NULL > foo = paste(cat(blah)) p30s4 p28s4 > foo character(0)

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  • Singletons and other design issues

    - by Ahmed Saleh
    I have worked using different languages like C++/Java and currently AS3. Most applications were computer vision, and small 2D computer games. Most companies that I have worked for, they use Singletons in a language like AS3, to retrieve elements or classes in an easy way. Their problem is basically they needs some variables or to call other functions from other classes. In a language like AS3, there is no private constructor, and they write a hacky code to prevent new instances. In Java and C++ I also faced the situation that I need to use other classe's members or to call their functions in different classes. The question is, is there a better or another design, to let other classes interact with each others without using singletons? I feel that composition is the answer, but I need more detailed solutions or design suggestions.

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  • Javascript Popup Windows

    - by sikas
    I have a popup window code that I have used before in login forms. The code displays an in-page popup. This is the code: <?php //In Page Popup Box with Faded Background by Jerry Low @crankberryblog.com //Find other useful scripts at the Crankberry Blog //SETTINGS $fade_amount = 60; //In Percentage $box_width = 400; $box_background = 'FFFFFF'; //Hex Color $box_border_width = 2; $box_border_color = '999999'; //Hex Color $close_box = 1; //Do You Want The Close Bar on Top 1 = Yes, 0 = No $extension = ""; // Other Variables that maybe needed, page number etc. //Begin Popup Box $left_margin = ( 0 - ($box_width*0.5) ); $page_url = basename($_SERVER['PHP_SELF']); if ($extension!="") $page_url .= '?' . $extension; if (isset($_GET['popup'])) { echo '<div class="popup" style="width:'.$box_width.'px; background: #'.$box_background.'; margin-left:'.$left_margin.'px;'; if ($box_border_width>1) echo ' border: '.$box_border_width.'px solid #'.$box_border_color.';'; echo '">'; //Close Box if ($close_box===1) echo '<div class="popup_close"><a href="'.$page_url.'">Close (x)</a></div>'; ?> <!–- START YOUR POPUP CONTENT HERE -–> Popup content goes in here! <!–- END OF YOUR POPUP CONTENT HERE -–> <?php echo '</div> <div class="fade" onclick="location.replace(\''.$page_url.'\');" style="opacity: 0.'.$fade_amount.'; -moz-opacity: 0.'.$fade_amount.';filter: alpha(opacity: '.$fade_amount.');"></div> <div class="fade_container">'; } ?> <a href="?popup=1<?php if ($extension!="") echo '&' . $extension; ?>">Activated Box</a> This code contains a link that reloads the page with parameters/arguments to show the popup. I want to update this code to make the popup appear/hide without This is what I have done so far, yet the popup doesn`t show. Now I want to update the code to work as follows. <link rel=StyleSheet href="css/popup.css" type="text/css" media=screen></link> <?php //In Page Popup Box with Faded Background by Jerry Low @crankberryblog.com //Find other useful scripts at the Crankberry Blog //SETTINGS $fade_amount = 60; //In Percentage $box_width = 400; $box_background = 'FFFFFF'; //Hex Color $box_border_width = 2; $box_border_color = '999999'; //Hex Color $close_box = 1; //Do You Want The Close Bar on Top 1 = Yes, 0 = No $extension = ""; // Other Variables that maybe needed, page number etc. //Begin Popup Box $left_margin = ( 0 - ($box_width*0.5) ); $page_url = basename($_SERVER['PHP_SELF']); if ($extension!="") $page_url .= '?' . $extension; { echo '<div id="pop_up" class="popup" style="visibility:hidden; width:'.$box_width.'px; background: #'.$box_background.'; margin-left:'.$left_margin.'px;'; if ($box_border_width>1) echo ' border: '.$box_border_width.'px solid #'.$box_border_color.';'; echo '">'; //Close Box if ($close_box===1) echo '<div class="popup_close"><a href="#" ChangeStatus()>Close (x)</a></div>'; ?> <!–- START YOUR POPUP CONTENT HERE -–> Popup content goes in here! <!–- END OF YOUR POPUP CONTENT HERE -–> <?php echo '</div> <div id="fade_div" class="fade" onclick="location.replace(\''.$page_url.'\');" style="visibility:hidden; opacity: 0.'.$fade_amount.'; -moz-opacity: 0.'.$fade_amount.';filter: alpha(opacity: '.$fade_amount.');"></div> <div class="fade_container">'; } ?> <a href="#" onClick="ChangeStatus()">Activated Box</a> <script> function ChangeStatus() { div = document.getElementById('fade_div').style.visibility; popup = document.getElementById('pop_up').style.visibility; alert(popup); if(popup == "hidden") { div = "visible"; popup = "visible"; } else { div = "hidden"; popup = "hidden"; } } </script> ignore the CSS files as it is working fine. I guess the problem is with the JS. Can anyone help me?

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  • javascript table - update on data request

    - by flyingcrab
    Hi, I am trying to update a table based on a json request. The first update / draw works fine - but any subsequent changes to the variables (the start and end date) do not show up - even though the json pulled from the server seems to be correct (according to firebug). AFAIK the code below should re-initialize everything - no sure what is going on (I'm using the Google vizulization api)? function handleQueryResponse(response) { if (response.isError()) { //alert('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage()); return; } visualization = new google.visualization.Table(document.getElementById('visualization')); visualization.draw(response.getDataTable(), null); } One more thing: I'm working on a page that displays textbased tables and currently trying to decide between the google table (viz api) and a jQuery alternative I came across jqGrid any good ones I am missing?

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  • "Anagram solver" based on statistics rather than a dictionary/table?

    - by James M.
    My problem is conceptually similar to solving anagrams, except I can't just use a dictionary lookup. I am trying to find plausible words rather than real words. I have created an N-gram model (for now, N=2) based on the letters in a bunch of text. Now, given a random sequence of letters, I would like to permute them into the most likely sequence according to the transition probabilities. I thought I would need the Viterbi algorithm when I started this, but as I look deeper, the Viterbi algorithm optimizes a sequence of hidden random variables based on the observed output. I am trying to optimize the output sequence. Is there a well-known algorithm for this that I can read about? Or am I on the right track with Viterbi and I'm just not seeing how to apply it?

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  • ASP.NET C# Application Object Getters and Setters

    - by kellax
    I have had a hard time finiding a newbie friendly example of accessing Application Object. I have few things ( arrays ) i would like to store in Application Object to keep as persistant data for about 2h till AppRecycle Anyhow i know how to set an Application Object variable this way: // One way String[] users = new String[1000]; Application["users"] = users; // Another way Application.Add("users", users); However i do not know how to access these variables once in Application Object there is a Getter method Get however it requires int index and other one Contents which get's everything. Here i try to retrive my String[] array but gives me a error that i am trying to convert Object to String. String[] usersTable = Application["users"]; // Since this is an object i also tried Application.users but gives error

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  • when is java faster than c++ (or when is JIT faster then precompiled)?

    - by kostja
    I have heard that under certain circumstances, Java programs or rather parts of java programs are able to be executed faster than the "same" code in C++ (or other precompiled code) due to JIT optimizations. This is due to the compiler being able to determine the scope of some variables, avoid some conditionals and pull similar tricks at runtime. Could you give an (or better - some) example, where this applies? And maybe outline the exact conditions under which the compiler is able to optimize the bytecode beyond what is possible with precompiled code? NOTE : This question is not about comparing Java to C++. Its about the possibilities of JIT compiling. Please no flaming. I am also not aware of any duplicates. Please point them out if you are.

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  • Pass Alot of Parameters on a Form to Action Struts2

    - by Neeraj
    I have been working on migrating a web application from Struts1 to Struts2. I have a simple Form with around 45 Fields (basically a grid with data). I have to capture all those in Struts2 Action.I noticed that in struts2 we have OGNL through which we just write getters setters in action itself by declaring fields locally to get those variables flowing in the request. I cannot write 45 getters/setters in my action, there must be a way to pass whole object(a POJO) from jsp to Action layer. In Struts 1, we normally get a ActionForm Object and/or get request parameters in a map and then populate. Any help or suggestions will be appreciated.

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  • Return popupmenu selection in MATLAB using one line of code

    - by Doresoom
    I have a GUI which uses a selection from a popupmenu in another callback. Is there a way to return the selected value of the popupmenu in only one line without creating any temporary variables? I've tried several solutions, but I've only managed two lines with one temporary variable: Three lines: list=get(handles.popupmenu1,'String'); val=get(handles.popupmenu1,'Value'); str=list{val}; Two lines: temp=get(handles.popupmenu1,{'String','Value'}); str=temp{1}{temp{2}}; Can anyone shave it down to one? PS, It's a dynamic menu, so I can't just use get(handles.popupmenu1,'Value') and ignore the string component altogether.)

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  • Cuda program results are always zero in HW, correct in EMU??

    - by Orion Nebula
    Hi all! I am having a weird problem .. I have written a CUDA code which executes correctly in emulation and all results show up.. however, when executed on hardware "G210" .. the results in the result memory are always 0 I am passing two vectors to the kernel, one with random variables the other is initialized to zero, the code copies the first vector to shared memory, does some swapping and other operations and then writes back the results on the second vector (the one with the initial 0's) I am using double precision, the -arch sm13 flag is used, all memory allocation also use sizeof(double) .. I have checked if the kernel is invoked, it does .. so no problems here .. the cudaMemCpy has no problems .. what could be the problem .. :( why would it work in emulation but not on HW I am quite confused .. any ideas?

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  • Corrupted image if variable is not static

    - by Jaka Jancar
    I'm doing the following: static GLfloat vertices[3][3] = { {0.0, 1.0, 0.0}, {1.0, 0.0, 0.0}, {-1.0, 0.0, 0.0} }; glColor4ub(255, 0, 0, 255); glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer(3, GL_FLOAT, 0, vertices); glDrawArrays(GL_TRIANGLES, 0, 9); glDisableClientState(GL_VERTEX_ARRAY); This works ok: However, if I remove static from vertices and therefore re-create the data on the stack on each rendering, I get the following: This happens both on the simulator and on the device. Should I be keeping the variables around after I call glDrawArrays?

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  • How to create a GUI inside a function in Matlab?

    - by Paperflyer
    Is there a possibility to write a GUI from inside a function? The Problem is: The callback of all GUI-functions work in the global workspace. But functions have their own workspace and can not access variables in the global workspace. Is there a possibility to make the GUI-functions use the workspace of the function? function myvar = myfunc() myvar = true; h_fig = figure; % create a useless button uicontrol( h_fig, 'style', 'pushbutton', ... 'string', 'clickme', ... 'callback', 'myvar = false' ); % wait for the button to be pressed while myvar pause( 0.2 ); end close( h_fig ); disp( 'this will never be displayed' ); end This event-loop will run indefinitely, since the callback will not modify myvar in the function. Instead it will create a new myvar in the global workspace.

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  • Komodo IDE 6's slow autocomplete problems with Javascript

    - by skerit
    I've been trying out Komodo IDE 6 for the last few days. I've always liked Komodo but I'm starting to get annoyed by something: The autocomplete is way too slow/buggy. Certain variables just won't give any autocomplete tips. Sometimes you have to backspace the dot and try over and over again. It also has a hard time giving autocomplete info for an object that has been created using a class in a namespace. Has anyone else had any problems with these things? Are there any better alternatives?

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  • Write a GreaseMonkey script that reacts to domain strings (for I18N, e.g. cn,en,fr,etc.)

    - by Shizhidi
    Hello. Suppose there is a website that supports multiple languages: cn.mydomain.com or mydomain.com/cn or mydomain.cn en.mydomain.com or mydomain.com/en or mydomain.com fr.mydomain.com or mydomain.com/fr or mydomain.fr I want to write a GreaseMonkey script that has variables assigned different strings/values according to the address the user is loading the page from. How do you do that? Thanks EDIT: I realize I can just use JavaScript to get the address. Does GreaseMonkey itself support this kind of function?

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  • For what purpose does java have a float primitive type?

    - by Roman
    I heard plenty times different claims about float type in java. The most popular issues typicaly regard to converting float value to double and vice versa. I read (rather long time ago and not sure that it's actual now with new JVM) that float gives much worse performance then double. And it's also not recommended to use float in scientific applications which should have certain accuracy. I also remember that when I worked with AWT and Swing I had some problems with using float or double (like using Point2D.Float or Point2D.Double). So, I see only 2 advantages of float over double: it needs only 4 bytes while double needs 8 bytes JMM garantees that assignment operation is atomic with float variables while it's not atomic with double's. Are there any other cases where float is better then double? Do you use float's in your applications? It seems to me that the only valuable reason java has float is backward compatibility.

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  • Any way to have delayed_job execute some run-once code at startup and use across all jobs?

    - by Rob Cameron
    So I've got a delayed_job task that pushes some info to an XMPP server. Ideally you create a connection to XMPP once and then constantly push data to it, rather than creating a new connection every time you have some data to send. Is there any kind of facility in delayed_job for running a sort of 'setup' method when a worker starts, have it set some instance variables (like the XMPP connection object) that can then be used by all the jobs that come up? It's okay if each worker runs its own setup method. I just don't want every job (thousands per day) connecting to the XMPP server from scratch every time. Thanks for any help!

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  • Where to maintain common information, that could be accessed by all forms

    - by The King
    Hi All, This is my first winform app in .NET... I have made a couple of ASP.NET app... In this app, I have some common variables, like current user name, his selected process etc.. etc.. This should be made accessible from all forms in the app at any time... How could I do this... Is there any place like "Session" in ASP.NET here... Further How do coders generally pass information from one form to another... Here I want to pass on the info I acquired in the first form to the subsequent forms... I use constructor overloading and pass the values as parameters... I'm pretty sure there has to be a better way to do it... Thanks for your time...

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  • Static vs Non Static constructors

    - by Neil N
    I can't think of any reasons why one is better than the other. Compare these two implementations: public class MyClass { public myClass(string fileName) { // some code... } } as opposed to: public class MyClass { private myClass(){} public static Create(string fileName) { // some code... } } There are some places in the .Net framework that use the static method to create instances. At first I was thinking, it registers it's instances to keep track of them, but regular constructors could do the same thing through the use of private static variables. What is the reasoning behind this style?

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  • Array of strings and char ** environ variable.

    - by Naruto Uzumaki
    Hello! I want to know how an array of strings is declared? What I do is I declare an array of pointers of pointers to strings. Eg. char *array[]= {"string1","string2","string3"}; I was reading about modifying environment variables in Linux and stumbled upon the pointer char **environ ( http://www.cs.bham.ac.uk/resources/courses/2005/17423/doc/libc/Environment-Access.html#Environment-Access ). char **environ is declared as an array of strings. I think it should be a pointer to a pointer. For eg. char *array[]= {"string1","string2","string3"}; environ = array; Am I doing something wrong? I also read somewhere that char *argv[] = char **argv. How is it possible?

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  • PHP Doxygen Collaboration Diagrams

    - by Shabbyrobe
    I've started playing around with doxygen to generate documentation from my PHP code. I notice there are two diagrams in the generated output - inheritance and collaboration. I know about the inheritance one, but the collaboration one has piqued my interest since reading the manual: If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented class showing the direct and indirect implementation dependencies (inheritance, containment, and class references variables) of the class with other documented classes. The impression I get from that description is that composition relationships should be represented by the collaboration diagram as well, but it always seems to just be identical to the inheritance one. Is there something I can do to hint to Doxygen the things I would like to appear in this diagram? Does it just not work with PHP?

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  • Flex Builder 3 executing old source codes

    - by Gorro
    I'm facing this problem again and again, but can't find any solution (except mine, which is not as a good one I guess). Don't know why, sometimes Flex Builder executes old source codes after making changes. While debugging I see how it steps through a source (e.g. changing local variables) which does not exist (even if I delete all that block or function). My way to solve that is to delete the project (backing up the source codes of course) and create a new one, add the backed up sources to the project and rebuild. It starts to work as it should work, but this way is not as comfortable, especially if sources are on a remote machine and you need to configure .net back-end. Anyone knows how to solve?

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