Search Results

Search found 23664 results on 947 pages for 'quirky update'.

Page 687/947 | < Previous Page | 683 684 685 686 687 688 689 690 691 692 693 694  | Next Page >

• Double "!!" in Ruby [closed]

  - by Alex Maslakov

  Possible Duplicate: What does !! mean in ruby? Ruby, !! operator (a/k/a the double-bang) Sometimes I see a Ruby code like this def sent? !!@sent_at end It seems to be not logical. Is it necessary to use here double !? As far as I'm concerned, it might be just def sent? @sent_at end UPDATE: then what is the difference between these def sent? !!@sent_at end def sent? @sent_at.nil? end def sent? @sent_at == nil end

  Read the article

• Parallel.For(): Different results for simple addition

  - by TSS

  I'm just looking in to the new .NET 4.0 features. With that, I'm attempting a simple calculation using Parallel.For and a normal for(x;x;x) loop. However, I'm getting different results about 50% of the time (no code change). long sum = 0; Parallel.For(1, 10000, y => { sum += y; }); Console.WriteLine(sum.ToString()); sum = 0; for (int y = 1; y < 10000; y++) { sum += y; } Console.WriteLine(sum.ToString()); Surely I'm missing something simple or do not completely understand the concept. My guess is that the threads are trying to update "sum" at the same time. If so, is there an obvious way around it?

  Read the article

• In linux, is it possible to do partial reads on a regular file

  - by Jimm

  I need to write an application that spits out log entries to a regular file at a very fast rate. Also, there will be another process, that can read the same file concurrently at the time, other process would be writing to it. I have following questions How does read() determine EOF, specially in the case, where the underlying file could be concurrently being modified? Is it possible for read() to return partially written data from the other process write? For example, the write process wrote half a line and read would pick that half line and return? The application would be written in C on linux 2.6.x using Ex4 filesystem UPDATE: Below link points to the patch, that locks inode in EXT4, before reading and writing. http://patchwork.ozlabs.org/patch/91834/

  Read the article

• How can I have it to where "git push" pushes to local repositories?

  - by ForeverConfused

  I can do "git remote add origin x@x:~/blah" and "git push" will work. But if I create a local copy "git clone ~/blah" inside /var -- then "git remote add local /var/blah" inside ~/blah, when I try "git push" it doesn't push the updates. How can I make git push updates to local copies? I have a shared library I use in a bunch of projects. I use "git clone" inside other folders to get a local copy of the library. When I update the main library I have to go to each local copy and type "git pull" to get the updates? How can I say "git push" to push code to all libraries?

  Read the article

• how to make a simple database app in android?

  - by Iakovl

  i am not an android developer, prefer C# but i want to play with andorid a bit since i have a android device, apologize in advance for it. i want to make a simple app in android with the basic CRUD functions (create, read, update and delete) while the basic option is to use SQLiteOpenHelper i've seen DAO generators (like greenDAO) that make life more simple as i see it. so the first question is what DAOgenerator to use (if it all)? next is how to properly show it, while i know i need listview i still don't figure out exactly how to bind the database to it and to the querys i'll make for proper display each time i make a new query from a "search" screen, to the main "list display" screen

  Read the article

• Count of Distinct Int32 Values in .NET

  - by Eric J.

  I am receiving a stream of unordered Int32 values and need to track the count of distinct values that I receive. My thought is to add the Int32 values into a HashSet<Int32>. Duplicate entries will simply not be added per the behavior of HashSet. Do I understand correctly that set membership is based on GetHashCode() and that the hash code of an Int32 is the number itself? Is there an approach that is either more CPU or more memory efficient? UPDATE The data stream is rather large. Simply using Linq to iterate the stream to get the distinct count is not what I'm after, since that would involve iterating the stream a second time.

  Read the article

• SQLite issues, escaping certain characters...

  - by CODe

  I'm working on my first database application. It is a WinForms application written in C# using a SQLite database. I've come across some problems, when a apostrophe is used, my SQLite query fails. Here is the structure of my queries. string SQL = "UPDATE SUBCONTRACTOR SET JobSite = NULL WHERE JobSite = '" + jobSite + "'"; For instance, if an apostrophe is used in the jobSite var, it offsets the other apostrophes in the command, and fails. So my questions are: 1. How do I escape characters like the apostrophe and semicolon in the above query example? 2. What characters do I need to escape? I know I should escape the apostrophe, what else is dangerous? Thanks for your help!

  Read the article

• Getting rails to execute root level file edits on system files without compromising security.

  - by voxobscuro

  I'm writing a Rails 3 application that needs to be able to trigger modifications to unix system config files. I'd like to insulate the file modifications from the consumer side by running them in a background process. I've considered writing out a temp file in rails and then copying the file with a bash script but that doesn't really insulate the system. I've also considered pulling from the database manually with a cron based script and updating the configs. But what I would really like is a component that can hook into the rails environment, read out what is needed from the database, and update the config files. This process needs to be run as root because the config files mostly live in /etc/whatever. Any suggestions? Thanks!

  Read the article

• Getting deadlocks in MySQL

  - by at

  We're very frustratingly getting deadlocks in MySQL. It isn't because of exceeding a lock timeout as the deadlocks happen instantly when they do happen. Here's the SQL code that is executing on 2 separate threads (with 2 separate connections from the connection pool) that produces a deadlock: UPDATE Sequences SET Counter = LAST_INSERT_ID(Counter + 1) WHERE Sequence IS NULL Sequences table has 2 columns: Sequence and Counter The LAST_INSERT_ID allows us to retrieve this updated counter value as per MySQL's recommendation. That works perfect for us, but we get these deadlocks! Why are we getting them and how can we avoid them?? Thanks so much for any help with this.

  Read the article

• Cakephp 1.3 JsHelper for AjaxHelper

  - by erick2red

  Hi: I'm start using cakephp and i made a demo app using AjaxHelper $ajax->link('title', 'url', array('update' => 'mydiv')) Now i want to migrate that to cakephp 1.3 and AjaxHelper is deprecated on cake 1.3 and will be removed, so i want to accomplish the same with JsHelper which is replacing the functionality of AjaxHelper and JavascriptHelper I just can't find how to do that. I want to upgrade the versions to use jQuery out of the box with cakephp 1.3 and get rid of Prototype javascript library. so, any help ? I've already read the migration guide and nothing found yet.

  Read the article

• Iterators over a LInked List in a Game in Java

  - by Matthew

  I am using OpenGl in android and they have a callback method called draw that gets called with out my control. (As fast as the device can handle if I am not mistaken) I have a list of "GameObjects" that have a .draw method and a .update method. I have two different threads that handle each of those. So, the question is, can I declare two different iterators in two different methods in two different threads that iterate over the same Linked List? If so, do I simply declare ListIterator<GameObject> l = objets.listIterator() each time I want a new iterator and it won't interfere with other iterators?

  Read the article

• Does submit() function has a callback?

  - by ecu

  Hi, I have this code: setMyCookie('name','value_1'); $('.myform').submit(); setMyCookie('name','value_2'); Problem: Webkit browsers seem to update 'MyCookie' with 'value_2' before the form gets submited, or in the exact moment it is being submited, so wrong cookie value is sent with it. I want to change cookie value to 'value_2' immediately after the form is submited so the cookie is ready for another request. The following code works fine, but I don't think using timeout() is the best solution. Maybe there is another way to solve this problem? setMyCookie('name','value_1'); $('.myform').submit(); setTimeout(function(){setMyCookie('name',value_2);},100); Thanks.

  Read the article

• How to extract the latest row

  - by Bob

  Hi, I have a table like this: Table A Date Time ID Ref 110217 91703 A001 A1100056 110217 91703 A001 A1100057 110217 91703 A001 A1100058 110217 91703 A001 A1100059 110217 132440 A001 A1100057 110217 132440 A001 A1100058 110217 132440 A001 A1100060 I wish to have the latest data only & the final result should look like this using SQL: Date Time ID Ref 110217 132440 A001 A1100057 110217 132440 A001 A1100058 110217 132440 A001 A1100060 The database will self-update by itself at certain time. The problem is: I do not know the exact time, hence I do not know which record is the latest. Thanks.

  Read the article

• How to schedule heavy work for later display for Listviews?

  - by Pentium10

  I have a listview with 200 items. I use a custom view for each row. There is a code that takes some time to calculate, and because of this the list hangs out on scrolling and loads in slow (2-3sec). I have subclassed SimpleCursorAdapter, and using Filterable and SectionIndexer. I have in mind to show initially the name of the record, and put in a thread the calculation, and will show up later when it's done. How do I push back some work, and later update the listview to include the calculated data? This should show up on fly without user interaction.

  Read the article

• Java Insert Help...???

  - by El Classico

  I am trying to do an Insert, Update and Delete on a table in MS Access. Everything works fine for a SELECT statement. But when doing the other three operations, I don't seem to get any errors, but the actions are not reflected on to the DB. Please help... THe INSERT statement is as follows: PreparedStatement ps = con.prepareStatement("INSERT INTO Student VALUES (?, ?, ?, ?, ?, ?, ?, ?)"); ps.setInt(1,1); ps.setString(2,"ish"); ps.setInt(3,100); ps.setInt(4,100); ps.setInt(5,100); ps.setInt(6,300); ps.setInt(7,100); ps.setString(8,"A"); ps.executeUpdate(); Also may I know why PreparedStatement is used except for SELECT statement...

  Read the article

• C#.Net window application EXE and SQL SERVER 2000 Database at Client Machine

  - by user1397931

  Friends I have install a .net window application exe at client machine and its database in sql server 2000. For Exe I install .net framework and other support software and for DB i install sql server 2000 and Create Database over there and connect it. Working Properly But now client change Xp to window7. I search for installation of SQL Server 2000 , but its not working over there. So what i did, i send the MDF file of database with exe application and make connection string and its also working. Now i change something in DB , and trying to update .mdf file but its not reflecting the new one mdf its getting the old one. i am Stuck...... am i did any wrong ? because its difficult for me to fix. OR i want to know what is the efficient way of use of SQL Server 2000 database on window7 or any else solution is there? Please help me...

  Read the article

• What does a mercurial revision with no parent mean?

  - by Wilka

  I have a Mercurial repository that is in a strange state now. This is what it looks like in TortoiseHG: I didn't think this would be possible. Revision 54 has a parent of "-1 (000000000000)" (i.e. nothing). There's clearly something I don't understand yet about Mercurial, can anyone let me know what this means - and what must have happened for it to get into this state. As far as I know, it's only had stuff pushed and pulled from it - and nobody has been using any wacky extensions. Revisions 54 and 55 were just adding tags, but if I 'update -C' to revision 54 I end up with ONLY the .hgtags file. I've made a clone from revision 53 to fix this. But I'd rather understand what happened here, so I can avoid it happening again.

  Read the article

• Advanced Registry Monitoring

  - by RyanTimmons91

  I'm attempting to create a small utility to watch for the creation (or modification) of a specific registry key, and to kill the process responsible for causing that registry modification. I have had success in watching the changes to the registry via a class called 'RegistryMonitor', however it does not give you any information on what process initiated the registry call, through some googling I found that a library called 'EasyHook' should be able to do what I want, but all the documentation states that its designed for a per-application hook. The program itself is a temporary security patch, until our vendors come out with an official security update. As best I can tell there isn't a way to do exactly what I want to accomplish from C#, which is the only language I can comfortable write, test and execute software in. Any help on this would be appreciated I'm considering watching the registry changes via the program I already have, then if the change is discovered (the pc is already infected) running RKill and locking down the PC to prevent the issue from getting any worse

  Read the article

• Make array from $_POST values

  - by cbarg

  Let's start telling that I'm passing an x amount of variables via post from a form. Let's name them menu_category_1, menu_category_2, ..., menu_category_x, plus, maybe, menu_category_new (I'm using an if empty to check this last one variable). To make things easier I'm also sending the parameter $key (amount of variables starting from 0). Now I need to set them into a new variable $menu_category (array), which is going to be imploded and then update my database. How do I set up that new $menu_category variable to be an array containing all my variables named in the beginning? I was thinking of using a for loop but I can't come up with something useful. Thanks!!!

  Read the article

• Does the API call ExitProcess() work OK in VB6 if you follow the MS caveats?

  - by Clay Nichols

  Microsoft indicates that VB6 doesn't support ExitProcess (to exit and return a value). However, it indicates that this call can fail under certain circumstances (if a thread hasn't been completed, etc.) so I'm wondering whether this call will work OK (consistently :-) as long as you obey the caveats in the article. I could go a step further and call ExitProcess() from the Sub Main or Form which stared the app. Update: after some more reading (I really did research this a bit before asking ) I found a suggestion to use the TerminateProcess API instead. I'm investigating that option. Any thoughts?

  Read the article

• Rails: updating an item along with associated items

  - by shmichael

  Suppose I have a simple to-do list application. The application contains two models: lists (have an owner and description) items (have name and due-date) that belong to a specific list I would like to have a single edit screen for a list in which I update the list attributes (such as description) and also create/delete/modify associated items. There should be a single "save" button that will commit all changes. Unless save is pressed, any change to the list and the items should be forgotten. I wasn't able to find an elegant best practice for this. Would greatly appreciate any suggestions and/or references to existing implementations.

  Read the article

• Possible to get jquery .serializeArray() values out by key name?

  - by chobo2

  Hi I am using the jquery .serializeArray() function and I send it to the server and that works all good.However I need to update a couple things on the client side that are serialized. So instead of doing another selector on the textbox I want to just grab it out of the serialized array. I am not sure how to do this Product=Test&Qty=50 So say if I have something like this. I can I do something like this var sendFormData = form.serializeArray(); var val = sendFormData["Product"].value; but this seems not to work. I only can get it to work when I do something like this var sendFormData = form.serializeArray(); var val = sendFormData[0].value; I really don't want to do it by index since that means if the order changes the values could be all wrong. If you could do it by like keyname then that would not be a problem.

  Read the article

• How to break up a table holding 100mil+ number of records?

  - by Chiao

  We're currently storing answers for 52 predefined questions for our clients in our matchmaking site. we have over 30million unique users summing up for worst case of a 52x30million rows. Of these 52 questions, 11 are required and always answered. Our previous solution was to open an answer table for each question. This solution distributed our answer rows for faster insert/delete/update. But it also caused us an unconventional programming such as dynamically opening a table each time a question is added/updated, or removing an answer table if it was to be destroyed permanently. We want to come up with a better solution for our third version but could't get very far yet. Any ideas to accomplish this in any other, perhaps a more conventional, way?

  Read the article

• Call a function every hour

  - by user2961971

  I am trying to update information from a weather service on my page. The info should be updated every hour on the hour. How exactly do I go about calling a function on the hour every hour? I kind of had an idea but im not sure of how to actually refine it so it works... What I had in mind was something like creating an if statement, such as: (pseudo code) //get the mins of the current time var mins = datetime.mins(); if(mins == "00"){ function(); }

  Read the article

• How to get the value of a textbox modified by asp.net ajax from client side(by javascript)?

  - by Aaron

  I have a textbox in a asp.net update control. When I click a button on the webpage, the value of this textbox got modified. And I want to use javascript to get the modified value. The code I use was: var kmlString = document.getElementById('<%=TextBox1.ClientID%>').getAttribute("value"); It only got the original value of my textbox. I am wondering how can I get the latest value of the textbox through javascript. The browsers I intent to use is Firefox and Safari. So it would be great if the script can work for both browsers. Thanks very much!

  Read the article

< Previous Page | 683 684 685 686 687 688 689 690 691 692 693 694  | Next Page >