Search Results

Search found 13862 results on 555 pages for 'questions'.

Page 351/555 | < Previous Page | 347 348 349 350 351 352 353 354 355 356 357 358  | Next Page >

• iOS get file size on disk

  - by F2_CMD

  I'm trying to get the size on disk of a file in iOS using Objective C. As of now I've been able to get the actual size of the file and other file information using NSFileManager and then getting the attributes attributesOfItemAtPath:error but not the size on disk. I also tried getting the file size from struct stat but again it doesn't give me size on disk.I tried using NSTask to make a call to du -h but iOS didn't allow me to fork other processes. Any ideas are welcome :) I know this questions is similar to many others but the difference is that I'm trying to do this in iOS and most of the methods used in other systems don't work here. Thanks

  Read the article

• Java - understanding servlets

  - by Trup

  I am working on a homework project that should implement a board game between 2 clients over an HttpServlet. I have couple of questions: 1) I read that HttpServlets must be stateless, however, for the sake of the game, I have to keep a lot of state(whose turn it is, the state of the board, etc). Do I have to keep this in the clients? Does the HttpServlet indeed have to be stateless, i.e. have no fields that track state? 2) I know that the clients will talk to the servlet via the doGet/doPost methods, but how can the servlet talk to the clients(for example, if player 1 just made a move and sent it to the servlet, the servlet has to tell client 2 what the move was). Thank you Also, if you can point me to a useful, simple example of a similar code online, I would be very grateful

  Read the article

• Store form values for later submission

  - by kim griggs

  I have a Rails app that lets users create tutorials and quizzes. There are many users taking the quizzes and many quizzes in a tutorial. My client wants the quiz results to persist when a student navigates away from the quiz. So the use case would be: User starts to take quiz User answers some of the questions User navigates away from quiz to check a fact in the tutorial User goes back to quiz and their answers are still there User finishes quiz and submits Now this would be pretty easy to do if I enforced a "Save" submit so that the answers could be stored in a session or whatever, but the client (and I agree) thinks people will not remember to save before navigating away. Looking for advice on how to approach this. I'm thinking an observer and cookies.

  Read the article

• How to Debug Java Application using VIM/GVIM?

  - by Techmaddy

  I asked this question previously: http://stackoverflow.com/questions/495268/any-good-tutorial-for-moving-from-eclipse-to-vim From the inputs, I started using GVIM instead of Eclipse. I added ctags to it and I am able to navigate now comfortably. Only problem left for me is "Debugging"? I tried searching for some links, and couldn't a useful one? If anyone using or familiar with Java Debugging using vim/Gvim, can provide there inputs/ links/ tutorials, it would be very helpful. Thanks in advance.

  Read the article

• Microsoft Team System Equivalent stack.

  - by Nix

  I am looking for a free alternative to TS. What would be the best alternative stack(source control, bug tracking, project management/planning, wiki, automated builds (ci))? Keeping in mind that it would be nice if they all integrated well. For example, it would be nice to be able to link bugs to source control, and then be able to link to a project plan and then be able to automate building. I do not have issues with using Microsoft project to manage project planing. I know i would like to use these....: SVN TeamCity NUnit But i am struggling to find a good Wiki/Project Planning/Bug tracking, that would integrate well. Any questions let me know.

  Read the article

• Are protected constructors considered good practice?

  - by Álvaro G. Vicario

  I'm writing some little helper classes to handle trees. Basically, I have a node and a special root node that represents the tree. I want to keep it generic and simple. This is part of the code: <?php class Tree extends TreeNode{ public function addById($node_id, $parent_id, $generic_content){ if( $parent = $this->findNodeById($parent_id) ){ $parent->addChildById($node_id, $generic_content); } } } class TreeNode{ public function __construct($node_id, $parent_id, $generic_content){ // ... } protected function addChildById($node_id, $generic_content){ $this->children[] = new TreeNode($this->node_id, $node_id, $generic_content); } } $Categories = new Tree; $Categories->addById(1, NULL, $foo); $Categories->addById(2, NULL, $bar); $Categories->addById(3, 1, $gee); ?> My questions: Is it sensible to force TreeNode instances to be created through TreeNode::addById()? If it's so, would it be good practise to declare TreeNode::__construct() as private/protected?

  Read the article

• Embedded Google Earth Plug-Ins no longer working

  - by user1497162

  I really hope someone can help me. I just noticed that none of my website's Google Earth embedded plug-in's work anymore (in Safari, Chrome or Firefox)  All you can see now is blank space and small text that says "Information is temporarily unavailable." I have no idea why they would no longer be working.  Nothing has changed whatsoever. Example here: http://www.grandcanyonvirtualtour.com/_tours/phantom_ranch.html Any suggestions greatly appreciated!! Please note, I am not a coder -- I am a photographer who is learning how to integrate photographs into maps, so I apologize if any questions are elementary. Thanks, Sara I am on a MacBook Pro 2.4 GHz Intel Core i7; OS 10.7.4

  Read the article

• Vim: Replacing a line with another one yanked before

  - by duddle

  At least once per day i have the following situation: A: This line should also replace line X ... X: This is line should be replaced I believe that I don't perform that task efficiently. What I do: Go to line A: AG Yank line A: yy Go to line X: XG Paste line A: P Move to old line: j Delete old line: dd This has the additional disadvantage that line X is now in the default register, which is annoying if I find another line that should be replaced with A. Yanking to and pasting from an additional register ("ayy, "aP) makes this simple task even less efficient. My Questions: Did I miss a built-in Vim command to replace a line yanked before? If not, how can I bind my own command that leaves (or restores) the yanked line in the default register?

  Read the article

• A 4-byte Unsigned Int for Sql Server 2008?

  - by Jeff Meatball Yang

  I understand there are multiple questions about this on SO, but I have yet to find a definitive answer of "yes, here's how..." So here it is again: What are the possible ways to store an unsigned integer value (32-bit value or 32-bit bitmap) into a 4-byte field in SQL Server? Here are ideas I have seen: 1) Use a -1*2^31 offset for all values Disadvantages: need to perform math on the values before reading/writing/aggregating. 2) Use 4 tinyint fields Disadvantages: need to concatenate values to perform any operations 3) Use binary(4) Disadvantages: actually uses 4 + 2 bytes of space

  Read the article

• Why is my condition onsubmit not returning false?

  - by Liso22

  After asking a couple of questions I managed to create this form. I didn't have troubles making it return false if the submitted value was 0 but I cannot make it return false when it's the string 'Cambia de ciudad". I'm sure I'm messing with the quotes or something like that. This is the form: <form role="search" method="get" action="http://chusmix.com/" onsubmit="if (document.getElementById('s')== 'Cambiá de ciudad") return false;'> <input class="ubicacion" name="s" id="s" tabindex="1" onsubmit="if ((document.getElementById('s').value.length < 4) || (document.getElementById('s')== 'Cambiá de ciudad')) return false;" onfocus="if (this.value=='Cambiá de ciudad') this.value = ''" onblur="if(this.value == '') this.value = 'Cambiá de ciudad'" type="text" maxlength="80" size="28" value="Cambiá de ciudad"> <input type="submit" id="searchsubmit" value="Buscar" /> </form> How do I make it work? Thanks

  Read the article

• Purpose of Instance Methods vs. Class Methods in Objective-C

  - by qegal

  I have checked out all these questions... Difference Class and Instance Methods Difference between class methods and instance methods? Objective-C: Class vs Instance Methods? ...and all they explain is how instance methods are used on instances of a class and class methods are used with the class name, when a message is sent to a class object. This is helpful, but I'm curious to know why one would use a class method vs. an instance method. I'm fairly new to iOS application development, and usually use class methods, and I feel like I'm doing something wrong. Thanks in advanced!

  Read the article

• Understanding CGI and SQL security from the ground up

  - by Steve

  This question is for learning purposes. Suppose I am writing a simple SQL admin console using CGI and Python. At http://something.com/admin, this admin console should allow me to modify a SQL database (i.e., create and modify tables, and create and modify records) using an ordinary form. In the least secure case, anybody can access http://something.com/admin and modify the database. You can password protect http://something.com/admin. But once you start using the admin console, information is still transmitted in plain text. So then you use HTTPS to secure the transmitted data. Questions: To describe to a learner, how would you incrementally add security to the least secure environment in order to make it most secure? How would you modify/augment my three (possibly erroneous) steps above? What basic tools in Python make your steps possible? Optional: Now that I understand the process, how do sophisticated libraries and frameworks inherently achieve this level of security?

  Read the article

• idiomatic way to take groups of n items from a list in Python?

  - by Wang

  Given a list A = [1 2 3 4 5 6] Is there any idiomatic (Pythonic) way to iterate over it as though it were B = [(1, 2) (3, 4) (5, 6)] other than indexing? That feels like a holdover from C: for a1,a2 in [ (A[i], A[i+1]) for i in range(0, len(A), 2) ]: I can't help but feel there should be some clever hack using itertools or slicing or something. (Of course, two at a time is just an example; I'd like a solution that works for any n.) Edit: related http://stackoverflow.com/questions/1162592/iterate-over-a-string-2-or-n-characters-at-a-time-in-python but even the cleanest solution (accepted, using zip) doesn't generalize well to higher n without a list comprehension and *-notation.

  Read the article

• On Memory Allocation and C++

  - by Arpan

  And I quote from MSDN http://msdn.microsoft.com/en-us/library/aa366533(VS.85).aspx: The malloc function has the disadvantage of being run-time dependent. The new operator has the disadvantage of being compiler dependent and language dependent. Now the questions folks: a) What do we mean that malloc is run-time dependent? What kind of dynamic memory allocation functions can be independent of run-time? This statement sounds real strange. b) new is language dependent? Of course it should be right? Are HeapAlloc, LocalAlloc etc language independent? c) From a pure performance perspective are the MSVC provided routines preferable? Arpan

  Read the article

• Non-Profit Volunteer Opportunities

  - by Sean

  I have seen questions on SO regarding volunteering for potential employers or volunteering to help out on open source projects. But what about putting your IT skills to use at traditional non-profit organizations as a volunteer? I would like to volunteer some time to a worthwhile cause in 2010, but am having a hard time finding organizations who may need IT help. Does anyone do this? Are there any websites out there to help one find organizations looking for such help? I would think some must have a need for free software development type work? I saw a bit on 'WeVolunteer' that publishes a database of volunteer opportunities (http://www.wetv.com/volunteer.html), but it seems to be more 'typical' volunteer opportunities (soup kitchens, walk-a-thons, etc).

  Read the article

• [Symfony] Admin generator and i18n

  - by David

  I have read lots of questions about i18n, but I haven't found any about performance. I have a simple backend app listing the contents of an ads table. These ads have a category, that is translated in some languages (it's defined as i18n in the Doctrine schema). So, when I add a "table_method" in my generator.yml to include de Category table, it reduces the number of queries, but there are yet some of them referencing i18n translation tables. So, if I add the category Translation table to the query, it reduces even more the queries BUT it increases the processing time considerably. Why this time penalty? Just because of the translation table? And why isn't the filter using this method to avoid so many translation queries as well? I mean, if I want to filter by category, it is making one query per category to include the translation table. Why??

  Read the article

• Workstation hardware at does your company buy developers?

  - by Bosh

  I'm curious to know what workstation hardware companies are devoting to you, as a developer -- and how much they're spending. I'd consider this thread a big success if I could shed some light on these questions: Do engineers at big companies use substantially different hardware than engineers at start-ups companies? Does a fresh developer recruit at Google get substantially different hardware from someone in the same position at Microsoft or Yahoo!? Do programmers in more senior positions have more powerful hardware on their desks? Does anyone think faster hardware makes more efficient engineers?

  Read the article

• How to check using a script if project is opened in XCode?

  - by delirus

  Hi, I'd like to introduce build number feature for my iPhone project and increase it automatically with every commit to my git repo. I plan to do it using Apple's agvtool, which recommends that project is not opened in XCode at the time So my questions are: 1) So far I know that I need to make an executable script from .git/hooks/pre-commit.sample. How to do the scripting to check if certain project is opened in XCode? 2) pre-commit.sh will be executed upon calling git commit with no args, so whenever someone will commit with -a option, I won't have my build number updated. Is there any way to workaround this? Cheers

  Read the article

• Can I Use ASP.NET Wizard Control to Insert Data into Multiple Tables?

  - by SidC

  Hello All, I have an ASP.NET 3.5 webforms project written in VB that involves a multi-table SQL Server insert. That is, I want the customer to input all their contact information, order details etc. into one control (thinking wizard control). Then, I want to call a stored procedure that does the insert into the respective database tables. I'm familiar and comfortable with the ASP.NET wizard control. However, all the examples I've seen in my searches pertain to inserting data into one table. Questions: 1. Given a typical order process - customer information, order information, order details - should a wizard control be used to insert data into multiple database tables? If not, what controls/workflow do you suggest? 2. I've set primary keys and indexes on my order details, orders and customers tables. Is there special stored procedure syntax to use to ensure that referential integrity is maintained through the insert process? Thanks, Sid

  Read the article

• Initializing new instances of a class in a loop, how can I persist an assignment to an event handler

  - by Pydroid

  This is a follow on question from http://stackoverflow.com/questions/3020960/why-is-my-prototype-function-not-returning-the-property-of-the-instance $.getJSON(myjson, function(data) { var json = data; for (i in json) { juuvies[i] = new Juuvy(i,json[i], font, keyfontsize, valfontsize, orbcol, orbkeycol, orbvalcol, paper); juuvies[i].juuv_it(); var mykey = juuvies[i].init_nodes(); juuvies[i].orb.node.onmouseover = function() { console.log(mykey);}; } }); And my init_nodes function, Juuvy.prototype.init_nodes = function() { return this.key; } At this point of time, I get only the last key in the loop, instead of a unique pass each time. Is there a way I can persist the assignment for the event handler?

  Read the article

• How do I escape a string for a shell command in nodejs (V8 Javascript engine)?

  - by Maciek

  In nodejs, the only way to execute external commands is via sys.exec(cmd). I'd like to call an external command and give it data via stdin. In nodejs there does yet not appear to be a way to open a command and then push data to it (only to exec and receive its standard+error outputs), so it appears the only way I've got to do this right now is via a single string command such as: var dangerStr = "bad stuff here"; sys.exec("echo '" + dangerStr + "' | somecommand"); Most answers to questions like this have focused on either regex which doesn't work for me in nodejs (which uses Google's V8 Javascript engine) or native features from other languages like Python. I'd like to escape dangerStr so that it's safe to compose an exec string like the one above. If it helps, dangerStr will contain JSON data.

  Read the article

• How to remove the auto added column (HeaderRole=Padding) in WPF GridView

  - by dnr3

  Hi, I'm trying to make a custom gridview in WPF but I just realized that as this link says: The GridViewHeaderRowPresenter class performs layout for the column headers in a GridView and places an additional column header at the end to add space and because of the additional column header at the end, there's an extra column to the right of the last column. so I was wondering if I can modify it, please refer to this image below My questions are: Is there anyway I can remove the 'A' part from the grid? Is there anyway I can add the same effect of 'B' part (the role = padding header) to the 'C' Part (before the first column)? Thanks

  Read the article

• EntityFramwork System.OutOfMemoryException on 100MB upload

  - by Win

  Upload works fine for 62MB file. However, it throws exception if it is 100MB. I found few questions in stackoverflow, but none is very specific about datatype. Appreciate your help! ASP.Net 4, IIS7, EntityFramework 4.1, Visual Studio 2010 SP1, SQL 2008 DataType is varbinary(max) applicationHost.config <section name="requestFiltering" overrideModeDefault="Allow" /> web.config <httpRuntime maxRequestLength="1148576" executionTimeout="3600"/> <security > <requestFiltering> <requestLimits maxAllowedContentLength="112400000" /> </requestFiltering> </security>

  Read the article

• How to pass object in :with field for a link_to_remote call

  - by mathee

  I have an object elem that I'd like to pass to the remove_tag_from_cart method. Here is my attempt: -elem = @tags[1] #{elem.name}#{link_to_remote image_tag('x.png'), :url => {:controller => 'questions', :action => 'remove_tag_from_cart'}, :with => {:tag_to_remove => :elem}} The :with clause isn't working correctly. The image does not even show up. If I take out the :with clause, then the link properly shows up and calls the method correctly, but I need the elem object in order to remove it from the cart. Suggestions?

  Read the article

• algorithmes with no executable example code

  - by gcc

  [link] http://stackoverflow.com/questions/2932016/parsing-of-mathematical-expressions (problem has been told before) ** program is to create the infix tree for the given math expression.** if the expression is given completely paranthesized then the out put is fine but when there are no paranthesis or some part paranthesized then the out put is wrong. cant get the idea how to solve. my problem is told above. I have some algorithm to solve my problem, but I have no simple code which will be guide for me. Can anyone give me simple code (not working code) so that I will try working to understand.(for a 3 hours ,I have been searching and reading some text to understand algorithm which is told above.Actually,there is no example code investigating how it is working. Can anyone send me example which is written in c not other language.

  Read the article

< Previous Page | 347 348 349 350 351 352 353 354 355 356 357 358  | Next Page >