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  • C++ portable end of line

    - by Andrew
    Hi everyone, is there any way to automatically use correct EOL character depending on the OS used? I was thinking of something like std::eol? I know that it is very easy to use preprocessor directives but curious if that is already available.

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  • strip all <img> tags within a div

    - by Andrew Welch
    Hi, I have a jcycle plugin on a number of divs which are testimonials. Basically I don't want to show the tag in the testimonial viewed in a block on the front page but rather I do want it to show on another page. So I want to add some jquery or another method that strips the img tags for the front page display. Any ideas how to do this? Thanks Andy

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  • Should I call release on these cocoa objective-c variables?

    - by Andrew Arrow
    In the code below I'm making a new NSString with alloc and initializing it with the contents of some file. Because I'm calling alloc I know it's my responsibility to call release on the string when I'm done. But what about the variables "lines" and "line"? Since the method "componentsSeparatedByString" does not start with the word "new" or "create" can I assume "lines" will be autoreleased? Same question for "line" since "objectAtIndex" also does not start with "new" or "create". NSString* buffer = [[NSString alloc] initWithData:[fileManager contentsAtPath:@"/foo"] encoding:NSUTF8StringEncoding]; NSArray* lines = [buffer componentsSeparatedByString:@"\n"]; NSString* line = [lines objectAtIndex:5]; // do something with line [buffer release]; So is the code above okay? Or should I be calling "release" on lines and line too? Thanks.

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  • Is removing unused functionality a bad thing?

    - by Andrew Grimm
    Is it possible for YAGNI to apply in the past tense? You created some functionality, it was used a little bit a while ago, but you aren't using it any more, and you don't want to maintain it, so you'd rather delete it. Is getting rid of unused or rarely-used functionality neccessarily a bad thing? Background: I use source control, so if I need the functionality again, I can get it. I'm the only user of my software (I'm a bioinformatician analyzing a data set). One scenario where I came across this was that I was using inheritance, with a parent class, and two child classes. One was handling files generated by 454 sequencing (next-generation sequencing), and the other was handling files generated by Sanger sequencing (previous-generation sequencing). I was actively maintaining the latter, but not the former. Maybe my mistake was using inheritance rather than composition, but that's a slightly different story.

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  • PHP / C++ space calculations for parcel packing

    - by Andrew Willis
    I am working on a shopping cart project which requires a 'postage calculator' based on items that the person has in their cart. Obviously I will be storing the item's dimensions incl. weight and padding in a database and will also store the parcel (box) size and weight that the items will go in to, incl. box padding. Figuring the weight of the parcels will be easy but I was wondering how to go about figuring how to pack the box via PHP, that is, I would like the code to 'play tetris' with the items to make sure they get the best possible fit, giving accurate postage costs. Does anybody have any ideas on how best to achieve this or does anybody know of a PHP Class or function that can do this? EDIT: When I said 'best possible fit' maybe I was being optimistic! Having the script try every possible combination of package distribution within the parcel would be over the top, however I could improve the speed by writing the algoritm in C++ and running the program in PHP when the user 'checks out', the return value being an array with the parcel size and weight (which are all that are needed to calculate postage costs)

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  • PHP: How to copy elements from an associative array and place them at the beginning of the array?

    - by Andrew
    I have an array of countries that I will be using in a select menu: array( [0] => " -- Select -- " [1] => "Afghanistan" [3] => "Albania" [4] => "Algeria" [39] => "Canada" [47] => "USA" ) //etc... I want to copy create copies of the Canada and USA entries and place them at the front of my array. So the array should end up looking like this: array( [0] => " -- Select -- " [47] => "USA" [39] => "Canada" [1] => "Afghanistan" [3] => "Albania" [4] => "Algeria" [39] => "Canada" [47] => "USA" ) //etc... The array keys correspond to their ID in the database, so I can't change the keys. How can I achieve this?

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  • Win32 select/poll/eof/ANYTHING!?!?!

    - by Andrew
    Using the standard Win32 file I/O API's (CreateFile/ReadFile/etc), I'm trying to wait for a file to become readable, or for an exception to occur on the file. If Windows had any decent POSIX support, I could just do: select(file_count, files_waiting_for_read, NULL, files_waiting_for_excpt, NULL, NULL); And select will return when there's anything interesting on some of the files. Windows doesn't support select or poll. Fine. I figured I could take the file and do something like: while(eof(file_descriptor)) { Sleep(100); } The above loop would exit when more data is available to be read. But nope, Windows doesn't have an equivalent of eof() either! I could possibly call ReadFile() on the file, and determine if it's at the eof that way. But, then I'd have to handle the reading at that point in time -- I'm hoping to simply be able to figure out that a file is readable, without actually reading it. What are my options?

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  • Skype Mac API - Use AppleScript or 5 year old API?

    - by Andrew
    I have a x86_64 app that I would like to have optionally read Skype status messages. However, the 5 year old skype mac framework is 32-bit, and if there is a way to have that compile within a 64-bit app, I haven't found it. My question is, basically, how should I go about doing this? I really only need to get and set the USERSTATUS AWAY/ONLINE string. Using AppleScript, a "Should Skype allow this" dialog pops up... every time. This is highly inefficient and downright irritating. Advice? I'm considering writing a 32-bit CLI wrapper, but that seems like overkill.

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  • Google App Engine Needs Index Error

    - by Andrew Johnson
    I am currently getting a needs index error on my app engine app: http://www.gaiagps.com/wiki/home. I believe this index should have been created automatically by my index.yaml file (see below). Googling a bit, I think I just need to wait for my index to be built. Is this correct, or do I need to do something manually? Is there some sort of index-building queue? My tables are very, very small right now. EDIT: I added the line "indexes:" to my app.yaml, and now app engine reports the index is building, so I think this is fixed. It's weird that this file was wrong considering I've never touched it. indexes: # AUTOGENERATED # This index.yaml is automatically updated whenever the dev_appserver # detects that a new type of query is run. If you want to manage the # index.yaml file manually, remove the above marker line (the line # saying "# AUTOGENERATED"). If you want to manage some indexes # manually, move them above the marker line. The index.yaml file is # automatically uploaded to the admin console when you next deploy # your application using appcfg.py. - kind: Revision properties: - name: name - name: created The app works on my dev server, but not in production. However, on my dev console, I have noticed this error (EDIT: THIS ERROR IS GONE NOW THAT I ADDED indexes: to the app.yaml file above): ERROR 2009-10-18 04:46:51,908 dev_appserver_index.py:176] Error parsing /gaiagps.com/index.yaml: 'NoneType' object is not callable in "<string>", line 13, column 3: - kind: Revision ^

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  • [PHP] building html tables from query data... faster?

    - by Andrew Heath
    With my limited experience/knowledge I am using the following structure to generate HTML tables on the fly from MySQL queries: $c = 0; $t = count($results); $table = '<table>'; while ($c < $t) { $table .= "<tr><td>$results[0]</td><td>$results[1]</td> (etc etc) </tr>"; ++$c; } $table .= '</table>'; this works, obviously. But for tables with 300+ rows there is a noticeable delay in pageload while the script builds the table. Currently the maximum results list is only about 1,100 rows, and the wait isn't long, but there's clearly a wait. Are there other methods for outputting an HTML table that are faster than my WHILE loop? (PHP only please...)

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  • POSTDATA, ASIHTTPrequest + instapaper

    - by Andrew
    Hi guys, I'm trying to use ASIHTTPRequest to submit links to instapaper (http://www.instapaper.com/api). I'm able to authenticate but I get a 400 response when trying to submit a link, so I'm clearly in need of figuring how to use postdata. Any help appreciated. Sample code attached. Thanks NSURL *url = [NSURL URLWithString:urlInstapaperAddUrl]; ASIHTTPRequest instapaperAuthRequest = [ASIHTTPRequest requestWithURL:url]; [instapaperAuthRequest setDelegate:self]; [instapaperAuthRequest setRequestMethod:@"PUT"]; NSData temp = [[NSData alloc] initWithData:[@"url=http://www.redhat.com" dataUsingEncoding:NSASCIIStringEncoding]]; [instapaperAuthRequest appendPostData:temp]; [instapaperAuthRequest addBasicAuthenticationHeaderWithUsername:@"myusername" andPassword:@"mypassword"]; [instapaperAuthRequest startAsynchronous];

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  • Separate functionality depending on Role in ASP.NET MVC

    - by Andrew Bullock
    I'm looking for an elegant pattern to solve this problem: I have several user roles in my system, and for many of my controller actions, I need to deal with slightly different data. For example, take /Users/Edit/1 This allows a Moderator to edit a users email address, but Administrators to edit a user's email address and password. I'd like a design for separating the two different bits of action code for the GET and the POST. Solutions I've come up with so far are: Switch inside each method, however this doesn't really help when i want different model arguments on the POST :( Custom controller factory which chooses a UsersController_ForModerators and UsersController_ForAdmins instead of just UsersController from the controller name and current user role Custom action invoker which choose the Edit_ForModerators method in a similar way to above Have an IUsersController and register a different implementation of it in my IoC container as a named instance based on Role Build an implementation of the controller at runtime using Castle DynamicProxy and manipulate the methods to those from role-based implementations Im preferring the named IoC instance route atm as it means all my urls/routing will work seamlessly. Ideas? Suggestions?

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  • Select Statements in Jobs

    - by Andrew Vogel
    I have inherited a few jobs and I am trying to understand why select statements would be in their steps. I would think that select statements would be pointless in an automated job that displays nothing for an end user.

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  • How should I measure Concurrent Licence Usage

    - by Andrew Wood
    Hi I have detailed stats on user access to my system detailing login and logout times as well as machine used, network username etc. I am in need of measuring what I would term a concurrent user licences level based on this information. Now I could take the maximum logged in for any 1 day in a 3 month period say 170 or I could take the average say 133. Does anyone have or know of a formula for working this out or is it as simple as the high water mark which is 170 in my example. A client has recently gone from an unlimited licence to a concurrent licence so I am faced with the task of setting the initial licence level. There is potential for more licence sales in the future so I don't want it set to high and I do want it based on historical data that the system collects rather than guess work.

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  • Powershell - Splitting variable into chunks

    - by Andrew
    I have written a query in Powershell interrogating a F5 BIG-IP box through it's iControl API to bring back CPU usage etc. Using this code (see below) I can return the data back into a CSV format which is fine. However the $csvdata variable contains all the data. I need to be able to take this variable and for each line split each column of data into a seperate variable. The output currently looks like this: timestamp,"Utilization" 1276181160,2.3282800000e+00 Any advice would be most welcome $SystemStats = (Get-F5.iControl).SystemStatistics ### Allocate a new Query Object and add the inputs needed $Query = New-Object -TypeName iControl.SystemStatisticsPerformanceStatisticQuery $Query.object_name = $i $Query.start_time = $startTime $Query.end_time = 0 $Query.interval = $interval $Query.maximum_rows = 0 ### Make method call passing in an array of size one with the specified query $ReportData = $SystemStats.get_performance_graph_csv_statistics( (,$Query) ) ### Allocate a new encoder and turn the byte array into a string $ASCII = New-Object -TypeName System.Text.ASCIIEncoding $csvdata = $ASCII.GetString($ReportData[0].statistic_data)

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  • Common lisp, CFFI, and instantiating c structs

    - by andrew
    Hi, I've been on google for about, oh, 3 hours looking for a solution to this "problem." I'm trying to figure out how to instantiate a C structure in lisp using CFFI. I have a struct in c: struct cpVect{cpFloat x,y;} Simple right? I have auto-generated CFFI bindings (swig, I think) to this struct: (cffi:defcstruct #.(chipmunk-lispify "cpVect" 'classname) (#.(chipmunk-lispify "x" 'slotname) :double) (#.(chipmunk-lispify "y" 'slotname) :double)) This generates a struct "VECT" with slots :X and :Y, which foreign-slot-names confirms (please note that I neither generated the bindings or programmed the C library (chipmunk physics), but the actual functions are being called from lisp just fine). I've searched far and wide, and maybe I've seen it 100 times and glossed over it, but I cannot figure out how to create a instance of cpVect in lisp to use in other functions. Note the function: cpShape *cpPolyShapeNew(cpBody *body, int numVerts, cpVect *verts, cpVect offset) Takes not only a cpVect, but also a pointer to a set of cpVects, which brings me to my second question: how do I create a pointer to a set of structs? I've been to http://common-lisp.net/project/cffi/manual/html_node/defcstruct.html and tried the code, but get "Error: Unbound variable: PTR" (I'm in Clozure CL), not to mention that looks to only return a pointer, not an instance. I'm new to lisp, been going pretty strong so far, but this is the first real problem I've hit that I can't figure out. Thanks!

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  • Why its not working?

    - by Andrew Hoffmann
    BinaryReader br = new BinaryReader(Console.OpenStandardInput()); BinaryWriter bw = new BinaryWriter(Console.OpenStandardOutput()); int n = br.ReadInt32(); bw.Write(n); always getting this error: Unhandled Exception: System.IO.EndOfStreamException: Failed to read past end of stream. at System.IO.BinaryReader.FillBuffer (Int32 numBytes) [0x00000] in <filename unknown>:0 at System.IO.BinaryReader.ReadInt32 () [0x00000] in <filename unknown>:0 at Program.Main () [0x00025] in /home/skydos/ACM/Csharp/Csharp/Main.cs:24 Is there any way to make reading data in C# faster from Console?

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  • c++ exceptions and program execution logic

    - by Andrew
    Hello everyone, I have been thru a few questions but did not find an answer. I wonder how should the exception handling be implemented in a C++ software so it is centralized and it is tracking the software progress? For example, I want to process exceptions at four stages of the program and know that exception happened at that specific stage: 1. Initialization 2. Script processing 3. Computation 4. Wrap-up. At this point, I tried this: int main (...) { ... // start logging system try { ... } catch (exception &e) { cerr << "Error: " << e.what() << endl; cerr << "Could not start the logging system. Application terminated!\n"; return -1; } catch(...) { cerr << "Unknown error occured.\n"; cerr << "Could not start the logging system. Application terminated!\n"; return -2; } // open script file and acquire data try { ... } catch (exception &e) { cerr << "Error: " << e.what() << endl; cerr << "Could not acquire input parameters. Application terminated!\n"; return -1; } catch(...) { cerr << "Unknown error occured.\n"; cerr << "Could not acquire input parameters. Application terminated!\n"; return -2; } // computation try { ... } ... This is definitely not centralized and seems stupid. Or maybe it is not a good concept at all?

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  • Practical Experience using Stripes?

    - by Andrew Whitehouse
    I am coming from an Enterprise Java background which involves a fairly heavyweight software stack, and have recently discovered the Stripes framework; my initial impression is that this seems to do a good job of minimising the unpleasant parts of building a web application in Java. Has anyone used Stripes for a project that has gone live? And can you share your experiences from the project? Also, did you consider any other technologies and (if so) why did you chose Stripes?

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  • How should I avoid memoization causing bugs in Ruby?

    - by Andrew Grimm
    Is there a consensus on how to avoid memoization causing bugs due to mutable state? In this example, a cached result had its state mutated, and therefore gave the wrong result the second time it was called. class Greeter def initialize @greeting_cache = {} end def expensive_greeting_calculation(formality) case formality when :casual then "Hi" when :formal then "Hello" end end def greeting(formality) unless @greeting_cache.has_key?(formality) @greeting_cache[formality] = expensive_greeting_calculation(formality) end @greeting_cache[formality] end end def memoization_mutator greeter = Greeter.new first_person = "Bob" # Mildly contrived in this case, # but you could encounter this in more complex scenarios puts(greeter.greeting(:casual) << " " << first_person) # => Hi Bob second_person = "Sue" puts(greeter.greeting(:casual) << " " << second_person) # => Hi Bob Sue end memoization_mutator Approaches I can see to avoid this are: greeting could return a dup or clone of @greeting_cache[formality] greeting could freeze the result of @greeting_cache[formality]. That'd cause an exception to be raised when memoization_mutator appends strings to it. Check all code that uses the result of greeting to ensure none of it does any mutating of the string. Is there a consensus on the best approach? Is the only disadvantage of doing (1) or (2) decreased performance? (I also suspect freezing an object may not work fully if it has references to other objects) Side note: this problem doesn't affect the main application of memoization: as Fixnums are immutable, calculating Fibonacci sequences doesn't have problems with mutable state. :)

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  • Keep width even when column changes. (HTML)

    - by Andrew
    I have a login on the left sidebar of my website. When a user is logged in, the sidebar width doesn't remain the same as it was when the user wasn't logged in. Is there a way to keep the width the same? <!-- Start Sidebar --> <td id="sidebar" valign="top" height="400px" style="width: 200px"> <!-- Login Form --> <table id="TABLE2"> <tr> <td valign="top"> <asp:LoginView ID="LoginView1" runat="server"> <LoggedInTemplate> <br /> <br /> You are currently logged in. </LoggedInTemplate> <AnonymousTemplate> <asp:Login ID="Login1" runat="server" BorderPadding="0" BorderStyle="None" BorderWidth="0px" Font-Names="Verdana" Font-Size="0.8em" CreateUserText="Sign Up Now!" CreateUserUrl="http://www.tiltonindustries.com/Tilton/Login/CreateAccount.aspx" Height="1px" PasswordRecoveryText="Forgot your password?" PasswordRecoveryUrl="http://www.tiltonindustries.com/Tilton/Login/ForgotPassword.aspx" TextLayout="TextOnTop" Width="200px" DestinationPageUrl="http://www.tiltonindustries.com/Tilton/default.aspx"> <TitleTextStyle Font-Bold="True" Font-Size="0.9em"/> <InstructionTextStyle Font-Italic="True" ForeColor="Black" /> <TextBoxStyle Font-Size="0.8em" /> <LoginButtonStyle BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana" Font-Size="0.8em" ForeColor="#990000" /> <LayoutTemplate> <table border="0" cellpadding="4" cellspacing="0" style="border-collapse: collapse; height: 159px;"> <tr> <td style="height: 176px; width: 135px;"> <table border="0" cellpadding="0" style="width: 219px; height: 1px" id="TABLE1"> <tr> <td align="center" style="font-weight: bold; font-size: 0.9em; color: white; height: 18px; background-color: #990000; text-align: center" colspan="2"> Log In</td> </tr> <tr> <td style="width: 94px; height: 10px;"> </td> <td style="height: 10px; width: 78px;"> </td> </tr> <tr> <td style="width: 94px; height: 20px; text-align: right"> <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Name:</asp:Label> &nbsp; </td> <td style="height: 20px; text-align: left; width: 78px;"> <asp:TextBox ID="UserName" runat="server" Font-Size="0.9em" EnableViewState="False" Width="100px" MaxLength="20"></asp:TextBox><asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="ctl01$Login1">*</asp:RequiredFieldValidator></td> </tr> <tr> <td style="width: 94px; text-align: right"> <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label> &nbsp; </td> <td style="text-align: left; width: 78px;"> <asp:TextBox ID="Password" runat="server" Font-Size="0.9em" TextMode="Password" Width="100px"></asp:TextBox><asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="ctl01$Login1">*</asp:RequiredFieldValidator></td> </tr> <tr> <td style="height: 20px; width: 94px;"> &nbsp;</td> <td style="height: 20px; text-align: left; width: 78px;"> <asp:CheckBox ID="chkRememberMe" runat="server" Text="Remember Me" Width="104px" /></td> </tr> <tr> <td align="center" style="color: red; width: 94px; height: 20px;"> </td> <td align="center" style="color: red; text-align: left; width: 78px; height: 20px;"> <asp:Button ID="LoginButton" runat="server" BorderStyle="Solid" BorderWidth="1px" CommandName="Login" Font-Names="Verdana" Font-Size="1.0 em" Text="Log In" ValidationGroup="ctl01$Login1" Width="59px" BackColor="Gray" BorderColor="Black" Height="20px" /></td> </tr> <tr> <td align="center" style="width: 250px; color: red; height: 35px; text-align: center;" colspan="2"> <asp:Literal ID="FailureText" runat="server" EnableViewState="False"></asp:Literal></td> </tr> <tr> <td style="height: 26px; width: 94px;"> <asp:HyperLink ID="CreateUserLink" runat="server" NavigateUrl="http://www.tiltonindustries.com/Tilton/Login/CreateAccount.aspx">Sign Up Now!</asp:HyperLink>&nbsp; </td> <td style="width: 78px; height: 26px"> <asp:HyperLink ID="PasswordRecoveryLink" runat="server" NavigateUrl="http://www.tiltonindustries.com/Tilton/Login/ForgotPassword.aspx">Forgot your password?</asp:HyperLink></td> </tr> </table> </td> </tr> </table> </LayoutTemplate> </asp:Login> </AnonymousTemplate> </asp:LoginView> <!-- End Login Form --> <!-- Quick Links --> <br /> <br /> <p style="font-size: 14px; font-weight: bold; color: White"> Quick Links:<br /> </p> <br /> <p id="quicklinks"> <a href="default.aspx">Home</a><br /> <a href="services.aspx">Services</a><br /> <a href="matching.aspx">Color Matching</a><br /> <a href="packaging.aspx">Custom Packaging</a><br /> <a href="decorals.aspx">Decorals</a><br /> <a href="delivery.aspx">Delivery</a><br /> <a href="items.aspx">Items</a><br /> <a href="msds.aspx">MSDS</a><br /> <a href="plant.aspx">Plant Capabilities</a><br /> <a href="standard.aspx">Standard Colors</a><br /> <a href="special.aspx">Special Effects</a><br /> <a href="coatings.aspx">Spray Coatings</a><br /> <a href="warranty.aspx">Warranty</a><br /> <a href="http://www.tiltonindustries.com/Tilton/Login/Login.aspx">My Account</a><br /> <a href="gallery.aspx">Gallery</a><br /> <a href="about.aspx">About</a><br /> <a href="faq.aspx">F.A.Q</a><br /> <a href="links.aspx">Links</a><br /> <a href="careers.aspx">Careers</a><br /> <a href="contact.aspx">Contact</a><br /> <br /> </p> </td> </tr> </table> </td> <!-- End Sidebar -->

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  • Rails auto_complete "undefined method `auto_complete_for'" problem

    - by Andrew Wize
    rails - 2.3.8 ruby - 1.8.7 After auto_complete plugin installstion i still have "undefined method `auto_complete_for'" problem! Andrey-Bezruks-MacBook-Pro:eyeonasia.stage wizeflux$ ruby script/plugin install http://github.com/rails/auto_complete.git --force svn: '/Users/wizeflux/Projects/ionasia/eyeonasia.stage/vendor/plugins' is not a working copy Initialized empty Git repository in /Users/wizeflux/Projects/ionasia/eyeonasia.stage/vendor/plugins/auto_complete/.git/ warning: Option "depth" is ignored for github.com/rails/auto_complete.git From github.com/rails/auto_complete * branch HEAD - FETCH_HEAD Andrey-Bezruks-MacBook-Pro:eyeonasia.stage wizeflux$ after restarting server i get an error on line " auto_complete_for :listings, :name " - undefined method `auto_complete_for' for #

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