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• Having trouble routing a page in ruby

  - by rockyroadster555

  I currently have a users model and controller, whenever a user is created it makes there profile url at example.com/users/userid. I also have a users/new page and a users/index page. The issue is that when I try to create a users/selected users page rails thinks its a user id and gives me this error. "Couldn't find User with id=selectedusers." I've previously been able to fix this by directly calling the pages in the controller e.g index, or new but I'm not sure how to handle a page that doesent have a function in the controller. Thank you

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• jquery atrr("href") is not consistent ..in sharepoint

  - by alienavatar

  Hi all I have a jquery function(This is not written by me anyway still I am learning). In that we are replacing urls using f.attr("href") in several places. I am not understanding that from where this href value will be binded. And why the value(f.attr("href")) is changing place to place. I mean to say it is having some value @ one location and if I give the same it is giving me different value at other location. I read in article that The .attr() method gets the attribute value for only the first element in the matched set..What is the matched set means

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• Entity framework, adding custom entity to diagram

  - by molgan

  Hello I'm using the entity framework that comes with 3.5sp1, and I'm trying to add a custom entity that I will propulate with searchresults from a stored procedure. But I have problems with the designer....... when I pick "Add + Entity" and give it a name, and hit save, the whole diagram stops working...... blah entities namespace could not be found..... all the other entities have lost its reference or summet. Works when I add a "table" to it that exists in database. But when custom it screws everything up. How should I fix this? I've imported the function, I just need to add an entity for it... I've read http://blogs.microsoft.co.il/blogs/gilf/archive/2009/03/13/mapping-stored-procedure-results-to-a-custom-entity-in-entity-framework.aspx but I cant get to step 3 since of all the errors when saving on step 2. /M

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• Why setValue at not working on Jtable?

  - by Nitz

  Hey Guys I am doing project on java. In one of the class, I am working on jtable. Now what i am doing is, In the table data will be loaded from the database. Now i want to change some value at some exact row and column. so for that i am using jtable's setValue function. which is like this.... grayCardTbl.setValueAt(Float.valueOf(String.valueOf(pdiff)),1,4); I have checked the "pdiff" variable, it is perfect. i had total 5 columns and 10 rows. So now problem with rowindex and column index. and after this i have also refresh the table. but still it is not reflecting on table.

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• Maximum Possible File Name Length in Windows Kernel

  - by Lambert

  I was wondering, what is the longest possible name length allowed by the Windows kernel? E.g.: I know the kernel uses UNICODE_STRING structures to hold all object paths, and since the byte length of a wide-character string is stored inside a USHORT, that allows for a maximum path length of 2^15 - 1 characters. Is there a similar, hard restriction on a file name (rather than path)? (I don't care if NTFS or FAT32 imposes a particular restriction; I'm looking for the longest possible theoretically allowed name in the kernel, assuming no additional file system or shell restrictions.) (Edit: For those wondering why this even matters, consider that normally, traversing a directory is achieved by FindFirstFile/FindNextFile calls, one call per file. Given the function named NtQueryDirectoryFile, which is the underlying system call and which returns multiple file names per call, it's actually possible to take advantage of this maximum-length restriction on the path to make an extremely-fast directory traverser that uses solely the stack as a buffer. Now I'm trying to extend that concept, and I need to know the maximum size of a file name.)

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• ExpressionEngine 2 module "tag cannot be processed"

  - by Phil Sturgeon

  So I have turned my hand to ExpressionEngine and while the backend crud was easy enough getting the frontend working with template syntax is proving difficult, even at the "hello world" level. expressionengine/third_party/rest/mod.rest.php class Rest { var $return_data = ''; function Rest() { $this->EE =& get_instance(); return $this->return_data = 'HAI'; } } // END REST Class /* End of file REST.php */ /* Location: ./application/libraries/REST.php */ Then im calling it directly in a new empty template: {exp:rest} So I'm expecting to see "HAI" but I get: Error The following tag cannot be processed: {exp:rest} Please check that the ‘rest’ module is installed and that ‘rest’ is an available method of the module Any ideas? The module is installed and the backend is running fine.

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• What interprocess locking calls should I monitor?

  - by Matt Joiner

  I'm monitoring a process with strace/ltrace in the hope to find and intercept a call that checks, and potentially activates some kind of globally shared lock. While I've dealt with and read about several forms of interprocess locking on Linux before, I'm drawing a blank on what to calls to look for. Currently my only suspect is futex() which comes up very early on in the process' execution. Update0 There is some confusion about what I'm after. I'm monitoring an existing process for calls to persistent interprocess memory or equivalent. I'd like to know what system and library calls to look for. I have no intention call these myself, so naturally futex() will come up, I'm sure many libraries will implement their locking calls in terms of this, etc. Update1 I'd like a list of function names or a link to documentation, that I should monitor at the ltrace and strace levels (and specifying which). Any other good advice about how to track and locate the global lock in mind would be great.

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• What's your motivation to help others at stackoverflow?

  - by Bernhard V

  Hi! I gotta say that this site is really great because it helped me a lot at my job. I'm mostly the one asking the questions rather than answering it. Now I'd like to know what's your motivation to help others of whom you only know their nicknames? Because contrary to other communities on the Internet, this site lacks things like a message board where you can talk about all things in life or a function for private messaging. And in my opinion these two things normally help in building kind of a "social" environment. Also stackoverflow has probably lot's of users and is therefore not that tight-knitted. Maybe you can share some your thoughts with me.

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• Memory leak while using emoticons on CRichEditCtrl

  - by Jorg B Jorge

  I'm developing a text editor class (for a chat application) based on CRichEditCtrl (MFC) with emoticon support. After i load the emoticon's bitmap, I use the function OleCreateStaticFromData to insert it into CRichEditCtrl. After that i just delete the bitmap object allocated by myself. I can verify (using a GDIView utility) that all resources i allocate have been properly released. This works perfectly: the bitmap (emoticon) is drawn on the CRichEditCtrl window and is handled just like a character. My problem is that I don't know how to deallocate the memory (internal) allocated by OleCreateStaticFromData to manage the bitmap (emoticon). The memory allocated for any emoticon used is never released, even if i delete the CRichEditCtrl object. I'd like to know how to fix that issue. Is that a MFC's issue or i'm doing something wrong ? Thx.

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• Read a remote zipped xml with just XSL

  - by Emaguel

  Hello there I want to know if it's possible for an XSLT file to read data from an XML located within folders of a remote zip(from the server at work), without any external processors (saxon and so forth) and without downloading it. Failing that, I'll resort to just reading the information from the zip... which brings me to my other (newb)issue. I currently have an XSLT that accesses and gets the data from the downloaded and extracted XML file, but I can't do this without extracting it. I've read that with Altova and xslt 2.0 it is possible to read from within a zip file using the document() function, though, as of yet I have not been able achieve this. this is how I'm trying to do it: document('name.zip|zip/folder/folder2/iwantthis.xml') It just doesn't seem to find the file. I'd be almost eternally grateful if you show me the error of my ways and guide me into XSLThood. Thank you kindly

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• Returning a C++ reference in a const member functionasses

  - by Chris Kaminski

  A have a class hierarchy that looks somethign like this: class AbstractDataType { public: virtual int getInfo() = 0; }; class DataType: public AbstractDataType { public: virtual int getInfo() { }; } class Accessor { DataType data; public: const AbstractDataType& getData() const { return(data); } } Well, GCC 4.4 reports: In member function ‘const AbstractDataType& Accessor::getData() const’: error: invalid initialization of reference of type ‘const AbstractDataType&’ from expression of type ‘const DataType’ Where am I going wrong - is this a case where I MUST use a pointer?

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• Preventing the opening of a form on an ad

  - by Jonathan

  Hey guys, Did you guys know how to prevent the open of a Form when I click on a add button? Maybe using beforeShowForm? function(formid) { if(jQuery('#gridap').getGridParam('selrow')) { idgridap=jQuery('#gridap').getGridParam('selrow'); jQuery('#FK_numerocontrato_ap',formid).val(idgridap).attr('readonly','readonly'); } else { // I want to prevent the openning of the add form here and maybe show an alert using the "alertcap" } } CHECAROW; $grid->setNavEvent('add','beforeShowForm',$checarowid); BTW, there's a way to call the alertmod of jqgrid and add a custom message to it? tks!

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• Get HTML DOM with CSS

  - by 2x2p1p

  CSS can apply styles in elements through one ID, class or pseudo-selector, but I would like to get the HTML tree, something like in javascript: <script type = "text/javascript"> window.onload = function () { var div = document.getElementsByTagName ("div"); div[0].style.backgroundColor = "gray"; div[0].style.padding = "20px"; } </script> So for example: <style type = "text/css"> div[0] { /* Wrong but i tried :( */ background-color: gray; padding: 20px; } </style> <div > <div>...</div> </div> I'm tired of assign IDs to millions and millions of elements; is there a way to do this?

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• jQuery Cookie Help

  - by Bruno

  Hi there.. So I have never attempted to use a cookie and was wondering if someone could possibly help me with some functionality I am trying to achieve.. Essentially I have a jQuery function that is fired when a user visits a webpage. What I would like to do is make it to where that animation only plays once.. Possibly leveraging some cookie that would tell it not to play again for x amount of days. I noticed that alot of people having questions about cookies and jQuery have been mentioned the following cookie plugin, but I dont even really know how to leverage it. Any ideas? Right now the animation is: $('#header, #footer, #secondary-column').fadeTo(600, 1); I would assume that if I could set a cookie to tell it the following: $('#header, #footer, #secondary-column').fadeTo(0, 1);

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• Rerversing AND Bitwise.

  - by Benjamin

  Hey all, Here's the following algorithm: int encryption(int a, int b) { short int c, c2; uint8_t d; c = a ^ b; c2 = c; d = 0; while(c) { c &= c - 1; d++; } return d; } How can I find which variable a and b I should send in that function to decide of the output value of d? In other words, how can I reverse the algoritm to let's say if I want d=11?

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• Custom editor in QAbstractTableModel

  - by Martin Beckett

  Does anyone have an example of using a QWidget as an editor in a QAbstractTableModel? I have a column which when edited should create a QCombobox with the list of choices. The docs seem to suggest I need to write a QAbstractItemDelegate and a custom paint function but that seems overkill to simply pop-up a standard QCombobox in Qt::EditRole. Note - the combo box contents are the same for every row and it only needs to be shown when somebody clicks in the cell. I know this should be simple but I can't get it to work. It's easy for a QTableWidget based table - but I need it for a very large data table.

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• IntPtr arithmetics

  - by Luca

  I tried to allocate an array of structs in this way: struct T { int a; int b; } data = Marshal.AllocHGlobal(count*Marshal.SizeOf(typeof(T)); ... I'd like to access to allocated data "binding" a struct to each element in array allocated with AllocHGlobal... something like this T v; v = (T)Marshal.PtrToStructure(data+1, typeof(T)); but i don't find any convenient way... why IntPtr lack of arithmetics? How can I workaround this is a "safe" way? Someone could confirm that PtrToStructure function copy data into the struct variable? In other words, modifing the struct reflect modifications in the structure array data, or not? Definitely, I want to operate on data pointed by an IntPtr using struct, without copying data each time, avoiding unsafe code. Thank all!

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• PHP won't parse MySQL statements

  - by Hussain

  I just installed Apache 2.2.15/PHP 5.3.2/MySQL 5.1.44 on Windows Vista. Apache is working fine, PHP is functional, and MySQL works on the CLI. However, when I try to access MySQL via PHP, I get an error (Fatal error: Call to undefined function mysql_connect()). extension=php_mysql.dll and extension=php_mbstring.dll are uncommented in the php.ini file, and PHP is in the system path. There is no libmysql.dll in either the top level PHP directory or the ext directory. There's a libmySQL.dll file in the MySQL bin directory (which is also in the system path); I tried renaming it, but that doesn't do anything Also, in case anyone wants to know, I originally installed PHP using the MSI installer, but it was missing some DLLs, so I installed from the zip file. I think I've exhausted all my options. Any help on this problem would be very appreciated. Thanks in advance.

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• jQuery: delegating clicks to elements that contain other elements

  - by Master Morality

  So i get the gist of $.delegate and I know why it's doing what it's doing, but I'm wondering if there is a work around. I have link elements that contain spans like so: <a href='#'> <span>Person Name</span> <span>Person Info</span> </a> I use the following code in jQuery for event delegation: containerElement.delegate('click','a',function(){...}); The trouble is that this only triggers when I click on white space not occupied by a span. I know it does this because delegate simply compares the event target to 'a' to check if it should fire the delegate, however I want to include the spans as well, pretty much anything inside the <a>...</a> what do?

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• In the following implementation of static_strlen, why are the & and parentheses around str necessary

  - by Ben

  If I change the type to const char str[Len], I get the following error: error: no matching function for call to ‘static_strlen(const char [5])’ Am I correct that static_strlen expects an array of const char references? My understanding is that arrays are passed as pointers anyway, so what need is there for the elements to be references? Or is that interpretation completely off-the-mark? #include <iostream> template <size_t Len> size_t static_strlen(const char (&str)[Len]) { return Len - 1; } int main() { std::cout << static_strlen("oyez") << std::endl; return 0; }

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• Assigning hotkeys to custom buttons in Sage CRM

  - by CodeGeek

  Hi All, I'm trying to assign a hotkey to a custom buttom in Sage CRM. I'm able to do so for one keypress. However, it doesn't seem to work if I try to use a combination of keys, for example, 'Alt+C' Please refer my code below: document.onkeypress = onKeyPress; var flag = false; function onKeyPress() { if(window.event.keyCode == 18) { flag = true; } if(window.event.keyCode == 67 && flag) { alert("Successful!!!"); } }

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• help understanding the concept of javascript callbacks with node.js, especially in loops

  - by Mr JSON

  hi I am just starting with node.js. I have done a little ajax stuff but nothing too complicated so callbacks are still kind of over my head. I looked at async but all I need is to run a few functions sequentially. I basically have something that pulls some json from an api, creates a new one and then does something with that. obviously i can't just run it because it runs everything at once and has an empty json. mostly they have to go sequentially but if while pulling a json from the api it can pull other json while it's waiting that is fine. I just got confused when putting the callback in a loop. what do I do with the index? i think i have seen some places that use callback inside the loop as kind of a recusive function and don't use for loops at all. simple examples would help alot thanks!

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• sorting content of a text file in python

  - by rabidmachine9

  I have this small script that sorts the content of a text file # The built-in function `open` opens a file and returns a file object. # Read mode opens a file for reading only. try: f = open("tracks.txt", "r") try: # Read the entire contents of a file at once. # string = f.read() # OR read one line at a time. #line = f.readline() # OR read all the lines into a list. lines = f.readlines() lines.sort() f = open('tracks.txt', 'w') f.writelines(lines) # Write a sequence of strings to a file finally: f.close() except IOError: pass the only problem is that the text is displayed at the bottom of the text file everytime it's sortened... I assume it also sorts the blank lines...anybody knows why? thanks in advance

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• CodeRush Tricks of the Trade

  - by dr. evil

  I was using CodeRush quite while ago and now I'm planning to use it again. I've install the trial but I forgot all cool features except Alt + Home (drop a marker). And when you don't know some cool tricks it's really like burning money (since it's not cheap for personal use) What do you like about it? What are your best features? My best feature is marker: Alt + Home (and use escape to go back) P.S Dear Devxpress, if you think I helped you by asking this question I can accept some donations, a free license of CodeRush would be nice! Currently What I like most ps/pi etc. shortcut to create properties cc to create constructors pressing tab to navigate between the references F12 to find references in new cool window Ctrl + Shift + . for recent files Ctrl + Shift + Q for jumping to any function / class fe/fi for "for loops"

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• How can I send email attachment without using an additional library in Perl?

  - by CheeseConQueso

  Hey, I was wondering if there is a way to attach files (specifically .csv files) to a mail message in Perl without using MIME::Lite or any other libraries. Right now, I have a 'mailer function' that works fine, but I'm not sure how to adapt it into attaching files. Here is what I have: open(MAIL, "|/usr/sbin/sendmail -t"); print MAIL "To: cheese\@yahoo.com\n"; print MAIL "From: queso\@what.com\n"; print MAIL "Subject: Attached is $filename\n\n"; print MAIL "$message"; close(MAIL); I think this is specific for UNIX.

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