Search Results

Search found 71953 results on 2879 pages for 'work environment'.

Page 729/2879 | < Previous Page | 725 726 727 728 729 730 731 732 733 734 735 736  | Next Page >

  • LRU caches in C

    - by lazyconfabulator
    I need to cache a large (but variable) number of smallish (1 kilobyte to 10 megabytes) files in memory, for a C application (in a *nix environment). Since I don't want to eat all my memory, I'd like to set hard memory limit (say, 64 megabytes) and push files into a hash table with the file name as the key and dispose of the entries with the least use. What I believe I need is an LRU cache. Really, I'd rather not roll my own so if someone knows where I can find a workable library, please point the way? Failing that, can someone provide a simple example of an LRU cache in C? Related posts indicated that a hash table with a doubly-linked list, but I'm not even clear on how a doubly-linked list keeps LRU. Side note: I realize this is almost exactly the function of memcache, but it's not an option for me. I also took a look at the source hoping to enlighten myself on LRU caching, with no success.

    Read the article

  • Clustering and DB Replication in virtualized (and cloud) environments

    - by devdude
    Both replication and clustering are terms for servers setups with physical (real) servers, usually implemented on a DB or AS level. Now the question: In a virtualized environment with "easy" scalable servers (touching clustering) and a higher availability (DB replication) through the means of high availability of the virtual server by the cloudserver provider, do we really need replication and clustering (as in covering the problems of traditional servers) ? Question is asked from a soultion/application provider viewpoint. Please exclude the need of replication with a business requirement background, eg. the need to replicate a DB at 2 different geographical locations to ensure performance and data. Thanks for your insights !

    Read the article

  • Setting up java configurations in eclipse. multiple .param files

    - by Charlie
    I'm going to be using ECJ for doing genetic programming and I haven't touched java in years. I'm working on setting up the eclipse environment and I'm catching a few snags. The ECJ source has several packages, and several sample programs come along with it. I ran one sample program (called tutorial1) by going to the run configurations and adding -file pathToParamsFile to the program arguments. This made it point to the params file of that tutorial and run that sample. In a new example I am testing (from the package gui) there are TWO params files. I tried pointing to just one param file and a program ran in the console, but there was supposed to be a GUI which did not load. I'm not sure what I'm doing wrong. Any help would be greaaatly appreciated.

    Read the article

  • php Set a anonymous function in an instance

    - by geekay
    I am just starting out with PHP, and I am wondering if there is a way to add an anonymous function to a class instance. For instance, lets say... class A{ public B; } $c = new A(); //This is where I am getting a little confused... //The following wont work $c->B = function(){echo('HelloWorld');}; $c->B(); What I am hoping to do is reuse the same spit of code in a great number of different applications, and make it so that I can just 'swap-out' and replace functions in specific instances. I am using php5.3 (so anonymous functions should work, just not in the way that I am using them). Thanks so very much for your time!! -GK

    Read the article

  • How can I pass a mouse click to a parent control?

    - by grimus
    In a Silverlight 2 app, I am using Rectangles on a Canvas to draw a representation of data. I would like to have mouse clicks on the Rectangles be passed on to the control that owns the Canvas. I would also like to be able to show a tooltip with a summary of the data when the mouse is over a Rectangle. So far I've only been able to achieve one item or the other. If I make the Rectangles have their IsHitTestVisible property = false, the tooltips don't work, but the owning control will receive the mouse clicks. If I set it to true, then tooltips do work, but the clicks don't get passed on. Is there a way to have a Silverlight item be IsHitTestvisible = true, and pass on the mouse clicks?

    Read the article

  • Rails Unit Testing with MyISAM Tables

    - by tadman
    I've got an application that requires the use of MyISAM on a few tables, but the rest are the traditional InnoDB type. The application itself is not concerned with transactions where it applies to these records, but performance is a concern. The Rails testing environment assumes the engine used is transactional, though, so when the test database is generated from the schema.rb it is imported with the same engine. Is it possible to over-ride this behaviour in a simple manner? I've resorted to an awful hack to ensure the tables are the correct type by appending this to test_helper.rb: (ActiveRecord::Base.connection.select_values("SHOW TABLES") - %w[ schema_info ]).each do |table_name| ActiveRecord::Base.connection.execute("ALTER TABLE `#{table_name}` ENGINE=InnoDB") end Is there a better way to make a MyISAM-backed model be testable?

    Read the article

  • How to give an error when no options are given with optparse

    - by Acorn
    I'm try to work out how to use optparse, but I've come to a problem. My script (represented by this simplified example) takes a file, and does different things to it depending on options that are parsed to it. If no options are parsed nothing is done. It makes sense to me that because of this, an error should be given if no options are given by the user. I can't work out how to do this. Am I using options in the wrong way? If so, how should I be doing it instead? #!/usr/bin/python from optparse import OptionParser dict = {'name': foo, 'age': bar} parser = OptionParser() parser.add_option("-n", "--name", dest="name") parser.add_option("-a", "--age", dest="age") (options, args) = parser.parse_args() if options.name: dict['name'] = options.name if options.age: dict['age'] = options.age print dict #END

    Read the article

  • Web-Frameworks for Education Management Systems?

    - by Indebi
    So, I'm working on an idea and I'll go into a brief overview of that but my question is, What are some good web frameworks for this situation? I have some experience in the following languages: C# Python I have considerably more experience in C# than Python, however I am expecting to learn new things. My idea is this, a completely web-based community-oriented Education Management System that focuses on making students and teachers day-to-day lives easier. For students it will provide a centralized place for them to do homework, study for tests, and reinforce concepts learned previously in class. For teachers it will give them a centralized place to handle assignments, attendance, homework, tests, and all other major parts of classroom management. All of that, but in a community-oriented fashion. Everything a teacher does is shared and open to constructive criticism, allowing other teachers to use their assignments/tests and for students or other teachers to comment, rate and criticize their assignments. This encourages an environment of openness that will allow teacher's to focus on teaching and student's to focus on learning. And that community wouldn't be limited to one school or school-district, this system would be completely school-independent. Please note that I have no problem with hearing constructive criticism on this idea, however I would prefer if this post was more focused on my question. I have somewhat explored about the following options: Django ASP.NET Ruby on Rails Silverlight (1) I have Django installed and I played with it for a little bit, I really like how easy setting up databases are and how it handles the database completely for you. I don't really know how to use it very well and I don't quite understand the Model-View-Controller paradigm(?) for it yet but I haven't thought about it much. I also like the fact that it uses Python. (2) I don't really like Visual Studio for developing in ASP.NET, I hate the way the web-designer works and it just feels clunky and old. I like the server-side development part though. I don't like how expensive ASP.NET and overall Visual Studio is, even if I do get it for free for now using DreamSpark (3) I haven't been able to explore much with this, I could not get Rails (or maybe Ruby) properly installed. I first installed it within RadRails and that didn't work so I uninstalled RadRails and then installed the latest version of Ruby off the official Windows Installer and then installed Ruby on Rails through gem and even after all that it still didn't work, so I installed Netbeans and attempted to use it there but it still did not work (4) I like Silverlight in some extents, I've played with this one the most, it's very similar to WPF (which I've used the most) in a lot of ways but I don't like how database connectivity works, at least in comparison to Django. I also dislike how expensive everything with Microsoft is, even if I get it for free for now with DreamSpark. I would like to hear some suggestions from experienced web-developers as to what I should use and why, or at least what some good options are for my scenario Your help would be very appreciated

    Read the article

  • For Loop Statement

    - by acctman
    I'm trying to loop 2 variables and with an output that looks like this '91 - 96 lbs' I can get the For statement to work with just one variable but with two it does not work. for ($k = 91; $k <= 496; $k=$k+4($i = 96; $i <= 500; $i=$i+4)) echo '<option value='.$k. ' - ' .$i. ' lbs'("<%m_weight%>" == .$k. ' - ' .$i. ' lbs' ? ' selected="selected"' : '').'>'.$k. ' - ' .$i. ' lbs</option>';

    Read the article

  • Update panel in Tab Container

    - by Sam_Cogan
    I have a tab container with 5 tabs, each tab contains an update panel. When the user initially opens the form, they can only see the first Tab, the others are set to visible=false. Once they have completed the first form, the hit save which sends a partial postback to save the data to the DB. Once that is saved, I then want to set all the other tabs to visible, however this does not work at the moment, I am assuming because the tab container is not contained in an update panel. How can I get this to work, do I need to put the tab container in it's own update panel, which will obviously then contain all the other update panels, or should I not use an update panel in the first tab and do a full page postback?

    Read the article

  • Custom Build Step Paths Between x86 and x64 in Visual Studio

    - by Bob Somers
    For reference, I'm using Visual Studio 2010. I have a custom build step defined as follows: if exist "$(TargetDir)"server.dll copy "$(TargetDir)"server.dll "c:\program files (x86)\myapp\server.dll" This works great on my desktop, which is running 64-bit Windows. However, when I build on my laptop, c:\Program Files (x86)\ doesn't exist because it's running 32-bit Windows. I'd like to put in something that will work between both editions of Windows, since the project files are under version control and it's a real pain to change the paths every time I work on my laptop. If this were a *nix environment I'd just create a symlink and be done with it. Any ideas?

    Read the article

  • Logging from symfony's model layer

    - by naag
    I'm currently working on a project with symfony 1.4 and Doctrine 1.2. I'm looking for a proper way to do logging from the model layer. In some model classes I use the record hook postSave() to create a ZIP file using exec() (since PHP zip doesn't provide for storage method 'Stored'). To be sure that everythings works fine I check the return code and log an error if something goes wrong. My first naive approach was to do it like this: if ($returnCode != 0) { sfContext::getInstance()->getLogger()->debug(...); } As you know, this doesn't work so well because sfContext belongs to the controller layer and shouldn't be used from the model layer. My next try was to use the model's constructor to pass in an sfLogger instance, but this doesn't work due to Doctrine 1.2 reserving the constructor for internal use (Doctrine 1.2 Documentation). I'm looking forward for your suggestions!

    Read the article

  • AS2 acts randomly when changing scenes on the first frame

    - by fabieno
    I have a flash movie containing to scenes: scene1, scene2. I have chosen the order so that scene1 starts first, I was requested to add a functionality to allow flashvars to be passed, if fv_change equals one then scene2 should be the first to appear when the movie is loaded. I have included the following code in scene1 first frame of some layer: this.onEnterFrame = function() { delete this.onEnterFrame; if (isset==undefined && _root.fv_change && _root.fv_change==1) { isset = true; gotoAndStop("scene2",1); } } when testing in my flash environment everything worked fine, when I exported it to an HTML & SWF combo I got random results, I refreshed the page several times and some of the times scene2 appeared and some of the times it stayed with scene1. Am I doing something wrong? what is the correct way to change scene order using AS2 and external data(flashvars for that matter).

    Read the article

  • Aging Data Structure in C#

    - by thelsdj
    I want a data structure that will allow querying how many items in last X minutes. An item may just be a simple identifier or a more complex data structure, preferably the timestamp of the item will be in the item, rather than stored outside (as a hash or similar, wouldn't want to have problems with multiple items having same timestamp). So far it seems that with LINQ I could easily filter items with timestamp greater than a given time and aggregate a count. Though I'm hesitant to try to work .NET 3.5 specific stuff into my production environment yet. Are there any other suggestions for a similar data structure? The other part that I'm interested in is aging old data out, If I'm only going to be asking for counts of items less than 6 hours ago I would like anything older than that to be removed from my data structure because this may be a long-running program.

    Read the article

  • SH/BASH - Scan a log file until some text occurs, then exit. How??

    - by James
    Current working environment is OSX 10.4.11. My current script: #!/bin/sh tail -f log.txt | while read line do if echo $line | grep -q 'LOL CANDY'; then echo 'LOL MATCH FOUND' exit 0 fi done It works properly the first time, but on the second run and beyond it takes 2 occurrences of 'LOL CANDY' to appear before the script will exit, for whatever reason. And although I'm not sure it is specifically related, there is the problem of the "tail -f" staying open forever. Can someone please give me an example that will work without using tail -f? If you want you can give me a bash script, as OSX can handle sh, bash, and some other shells I think.

    Read the article

  • TTTabItem in three20 icon not working?

    - by Frank
    I have been trying to get TTTabItem to work with images. And I dug up that you can set the icon to an image file. This is my implemenation: TTTabItem *tab1 = [[[TTTabItem alloc] initWithTitle:@"Item 1"] autorelease]; tab1.icon = @"bundle://icon_eat_min.png"; filterBar.tabItems = [NSArray arrayWithObjects: tab1, nil]; [scrollView addSubview:filterBar]; However, my icon doesn't even appear. I even search through this group: http://groups.google.com/group/three20/browse_thread/thread/f879f6643... and override the rounded style. But I am just contemplating why would you have an something you can set and not have it work? or am i doing this badly

    Read the article

  • Does DB2 have an "insert or update" statement?

    - by Mikael Eriksson
    From my code (Java) I want to ensure that a row exists in the database (DB2) after my code is executed. My code now does a select and if no result is returned it does an insert. I really don't like this code since it exposes me to concurrency issuses when running in a multi-threaded environment. What I would like to do is to put this logic in DB2 instead of in my Java code. Does DB2 have an "insert-or-update" statement? Or anything like it that I can use? For example: insertupdate into mytable values ('myid') Another way of doing it would probably be to allways do the insert and catch "SQL-code -803 primary key already exists", but I would like to avoid that if possible.

    Read the article

  • Webserver parsing chrome input from post request

    - by ravenspoint
    I am developing a small embedded web server. I want to add parsing of post requests, but I am having a problem with input password fields from Chrome. Firefox and IE work perfectly. The HTML: <form action=start.webem method=post> <input value="START" type=submit /><!--#webem start --> <p>Password: <input TYPE=PASSWORD name=yourname AUTOCOMPLETE=OFF /><br> </form> From Firefox I get POST /stop.webem HTTP/1.1 Host: 127.0.0.1:8080 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.9) Gecko/20100315 Firefox/3.5.9 (.NET CLR 3.5.30729) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Referer: http://127.0.0.1:8080/ Content-Type: application/x-www-form-urlencoded Content-Length: 13 yourname=test However from Chrome, about 90% of the time, the yourname=test is missing POST /start.webem HTTP/1.1 Host: 127.0.0.1:8080 Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1045 Safari/532.5 Referer: http://127.0.0.1:8080/ Content-Length: 13 Cache-Control: max-age=0 Origin: http://127.0.0.1:8080 Content-Type: application/x-www-form-urlencoded Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Though, occasionally it does work!!! POST /start.webem HTTP/1.1 Host: 127.0.0.1:8080 Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1045 Safari/532.5 Referer: http://127.0.0.1:8080/start.webem Content-Length: 13 Cache-Control: max-age=0 Origin: http://127.0.0.1:8080 Content-Type: application/x-www-form-urlencoded Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 yourname=test I cannot find what causes it to work sometimes.

    Read the article

  • problem with custom NSProtocol and caching on iPhone

    - by TomSwift
    My iPhone app embeds a UIWebView which loads html via a custom NSProtocol handler I have registered. My problem is that resources referenced in the returned html, which are also loaded via my custom protocol handler, are cached and never reloaded. In particular, my stylesheet is cached: <link rel="stylesheet" type="text/css" href="./styles.css" /> The initial request to load the html in the UIWebView looks like this: NSString* strUrl = [NSMutableString stringWithFormat: @"myprotocol:///entry?id=%d", entryID ]; NSURL* url = [NSURL URLWithString: strUrl]; [_pCurrentWebView loadRequest: [NSURLRequest requestWithURL: url cachePolicy: NSURLRequestReloadIgnoringLocalCacheData timeoutInterval: 60 ]]; (note the cache policy is set to ignore, and I've verified this cache policy carries through to subsequent requests for page resources on the initial load) The protocol handler loads the html from a database and returns it to the client using code like this: // create the response record NSURLResponse *response = [[NSURLResponse alloc] initWithURL: [request URL] MIMEType: mimeType expectedContentLength: -1 textEncodingName: textEncodingName]; // get a reference to the client so we can hand off the data id client = [self client]; // turn off caching for this response data [client URLProtocol: self didReceiveResponse:response cacheStoragePolicy: NSURLCacheStorageNotAllowed]; // set the data in the response to our jfif data [client URLProtocol: self didLoadData:data]; [data release]; (Note the response cache policy is "not allowed"). Any ideas how I can make it NOT cache my styles.css resource? I need to be able to dynamically alter the content of this resource on subsequent loads of html that references this file. I thought clearing the shared url cache would work, but it doesnt: [[NSURLCache sharedURLCache] removeAllCachedResponses]; One thing that does work, but it's terribly inefficient, is to dynamically cache-bust the url for the stylesheet by adding a timestamp parameter: <link rel="stylesheet" type="text/css" href="./styles.css?ts=1234567890" /> To make this work I have to load my html from the db, search and replace the url for the stylesheet with a cache-busting parameter that changes on each request. I'd rather not do this. My presumption is that there is no problem if I were to load my content via the built-in HTTP protocol. In that case, I'm guessing that the UIWebView looks at any Cache-Control flags in the NSURLHTTPResponse object's http headers and abides by them. Since my NSURLResponseObject has no http headers (it's not http...) then perhaps UIWebView just decides to cached the resource (ignoring the NSURLRequest caching directive?). Ideas???

    Read the article

  • setting mailx default smtp relay

    - by Arthur
    I heave searched Google for this and cannot seem to find a soloution I have bsd-mailx on my server and it sends mail just fine However I wished to have a development environment at home. I need mailx such that php can use its mail function. However the mail is failing to resolve the domain name @gmail.com I am aware that my ISP talk talk may be blocking this is they have a mail server smtp.talktalk.net I assume I would have to add somthing to /etc/mail.rc and use heirloom maEdit turned out I had a instance of send mail running that was doing weird things.. after killing ilx not bsd-mailx,,but would still need to set default smtp relay Im on ubuntu 12.4 thankyou Edit turned out I had a instance of send mail running that was doing weird things.. after killing that, I was able to add the smtp relay, but its now saying that the sender domain does not work. I assume this domain has to route back the the same machine the mail originated from. as i dont have a domain for my home address.

    Read the article

  • What Belongs to the Aggregate Root

    - by jlembke
    This is a practical Domain Driven Design question: Conceptually, I think I get Aggregate roots until I go to define one. I have an Employee entity, which has surfaced as an Aggregate root. In the Business, some employees can have work-related Violations logged against them: Employee-----*Violations Since not all Employees are subject to this, I would think that Violations would not be a part of the Employee Aggregate, correct? So when I want to work with Employees and their related violations, is this two separate Repository interactions by some Service? Lastly, when I add a Violation, is that method on the Employee Entity? Thanks for the help!

    Read the article

  • Google App Engine - low-level datastore API flag?

    - by Keyur
    In my GAE-Java app, I'm using the low-level datastore API. Hence I don't need the GAE app instance to load any of the higher level data access libraries such as JPA, JDO, Data Nucleus, etc. Is there a flag that I can set to indicate that I don't want these libraries to be loaded? My motivation to do this is to reduce app instance startup time everywhere I can. Now I don't know if these libraries are loaded only on-demand or always. The dev environment logs messages related to data nucleus which seems to indicate that some of these libraries may be pre-loaded? I hope I'm wrong here. Thanks, Keyur

    Read the article

  • Django: tinyMCE and cross site javascript

    - by pistacchio
    Hi, follow this question, I was able to set some textareas in my admin page as richtext inputs. The most voted answer suggests to follow an example and is what i did. Also, it talks about a problem concerning "blank pages". I'm having the same problem and I'm not able to solve it. I have my media files served by a different server, so MEDIA_URL points to a different host with a different port. To simulate this in my dev environment, I also serve media files from a different port. Debugging the failing javascript, Chrome yelds: Unsafe JavaScript attempt to access frame with URL http://localhost:8000/admin/blog/post/add/ from frame with URL http://localhost:88/s3mangerie/js/tiny_mce/themes/advanced/image.htm. Domains, protocols and ports must match. How to solve this problem? Thanks

    Read the article

  • Silly CSS ref problem.

    - by Lucifer
    Hi All, I am having a very weird problem. I cannot for the life of me figure it out. The code for my page (at the moment), is this: <link rel="stylesheet" href="assets/css/default.css" /> But, why does it not load the stylesheet? When I move the stylesheet into the same location as the index.html page, and then change the references to it to point to the root dir, it works again? It never wants to work if the stylesheet is any more than 1 directory deep. Is this normal? Or should it still work?

    Read the article

< Previous Page | 725 726 727 728 729 730 731 732 733 734 735 736  | Next Page >