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Articles indexed Wednesday April 14 2010

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  • Safe HttpContext.Current.Cache Usage

    - by Burak SARICA
    Hello there, I use Cache in a web service method like this : var pblDataList = (List<blabla>)HttpContext.Current.Cache.Get("pblDataList"); if (pblDataList == null) { var PBLData = dc.ExecuteQuery<blabla>( @"SELECT blabla"); pblDataList = PBLData.ToList(); HttpContext.Current.Cache.Add("pblDataList", pblDataList, null, DateTime.Now.Add(new TimeSpan(0, 0, 15)), Cache.NoSlidingExpiration, CacheItemPriority.Normal, null); } I wonder is it thread safe? I mean the method is called by multiple requesters And more then one requester may hit the second line at the same time while the cache is empty. So all of these requesters will retrieve the data and add to cache. The query takes 5-8 seconds. May a surrounding lock statement around this code prevent that action? (I know multiple queries will not cause error but i want to be sure running just one query.)

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  • Git - ssh key / ip address

    - by Steve
    When I set up Git, I did it while using a dsl modem, and my ip isn't static, so when I generated the ssh keys for Git, it was based on that ip. When I'm assigned an ip other than the one used to generate the ssh Git keys, I can manually change the ip address to the one used to generate the keys. What are my other options to bypass this step? Dynamic DNS? Is there another way?

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  • Breadcrumbs in CakePHP

    - by kicaj
    I use HtmlHelper from CakePHP to create breadcrumbs navigation for my page... And i set $html->getCrumbs('separator', 'Home Page') to default.ctp and in other views i set $html->addCrumbs('nameLink', 'linkUrl'); All works fine! But when I open my Home Page there is no breadcrumbs, why?

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  • Ruby Methods: how to return an usage string when insufficient arguments are given

    - by Shyam
    Hi, After I have created a serious bunch of classes (with initialize methods), I am loading these into IRb to test each of them. I do so by creating simple instances and calling their methods to learn their behavior. However sometimes I don't remember exactly what order I was supposed to give the arguments when I call the .new method on the class. It requires me to look back at the code. However, I think it should be easy enough to return a usage message, instead of seeing: ArgumentError: wrong number of arguments (0 for 9) So I prefer to return a string with the human readable arguments, by example using "puts" or just a return of a string. Now I have seen the rescue keyword inside begin-end code, but I wonder how I could catch the ArgumentError when the initialize method is called. Thank you for your answers, feedback and comments!

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  • Microsoft DNS/DHCP using DDNS - Domain Suffix issue

    - by Samuurai
    I have an issue with our Microsoft DNS server, we're getting the dreaded "DNS Update Failed" in the DHCP logs. We have two forward lookup zones, blah.com and somethingelse.com - blah.com is the one I want the workstations/DHCP to dynamically update. However, I can only get it to work if I specify blah.com as the domain suffix in the network connection properties. I can think of two possible solutions, but have no idea how to implement them or if they're possible: 1) Designate a blah.com as the "default" zone somehow on the DNS server, so all updates are sent to that zone unless the client's domain suffix is somethingelse.com 2) Use DHCP option 15, which sets the domain suffix. - We're currently doing that, but it doesn't seem to take it into account when updating DNS. Can anyone please shed some light? Thank you.

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  • Sharepoint "List does not exist" after site import

    - by Jeff Sacksteder
    I'm try to copy a site from a production WSS 3.0 server to a testing server in a different farm to try some changes. The export using stsadm works as expected, I create the target site in the test farm and the import finished without error. The site in question makes use of some of the 'Sharepoint Boost' products and those are installed and activated on the destination server. When I try to access the site, I receive the error- "List does not exist The page you selected contains a list that does not exist. It may have been deleted by another user." Any specific guidance might be helpful, but this is the most useless message I've seen. What's the process for troubleshooting this - Is there a more verbose log that contains more information somewhere?

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  • SEO Ranking Software

    It is every internet marketer's dream to dominate the first few pages of various search engines, such as Google, Yahoo and Bing, with their sites. Attempting to garner and generate a lot of traffic to your sites can be very difficult, even in relatively "easy" niches.

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  • Kinds of Keywords

    One of the most important element in your blog or website is keyword. With proper use, this element will surely put you in higher rankings and it will surely generate more traffic. But before anything else, let's take a look at the two kinds of keywords.

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  • Organic SEO Marketing Defined

    Without SEO you wouldn't be able to locate any of the millions of pages online. Search Engine Optimization (SEO) is the process that must be used to direct traffic to a website; it is really what fuels the Internet. SEO connects everyone who is looking for anything with the pages that they need to see.

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  • Search Engine Optimization - 3 Tips For Building Quality Backlinks

    When most people think of Search Engine Optimization (SEO), they usually concentrate solely on keyword optimization. While keyword optimization is very important, it is not the only thing that will make your website or blog search engine friendly. There are other factors that can greatly determine the effectiveness of your site. One of those factors that we'll be discussing today is inbound links, otherwise known as back links.

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  • SEO Package Deals Make a Change From Flushing the Toilet on Your Business

    SEO package deals could save your business from being flushed away - almost literally. Rather than using SEO package deals, does your online marketing go a little like this: save up enough money to pay for an article service to create a whole batch of custom SEO articles, submitting them all across the web, then do nothing for weeks while you save up for the next assault? If so, then your article marketing strategy is what I tend to refer to as lavatorial.

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  • Creating Animated Flash Images

    Flash animated images are everywhere. All across the web, the cool technology is transforming the way web sites, banners and emails looks. Images flash across the screen and before your eyes at new speeds.

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  • Freelance Jobs in PHP

    PHP is the most popular, widely used server site scripting language that is used for web development. You can find a lot of freelance projects in PHP.

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  • Logging in to a website cURL!

    - by uknowho_freeman
    I am using cURL for the first time. I need to login to a site. I have problem with setting cookie file and to retrive, so that i can acces that page not just one time, but several times. I found the code on the web, for logging in to a site and Scrap a page for some detailed info, cause to get that page it takes to much time. so i just want to know if it is OK! the code belove(it is just for login in the code for Scraping its not ready) <?php curl_login('http://mywantedsite.com/login.php','user=******&pass=******','','off'); echo curl_grab_page('http://mywantedsite.com/somepage.php','','off'); function curl_login($url,$data,$proxy,$proxystatus){ $fp = fopen("cookie.txt", "w"); fclose($fp); $login = curl_init(); curl_setopt($login, CURLOPT_COOKIEJAR, "cookie.txt"); curl_setopt($login, CURLOPT_COOKIEFILE, "cookie.txt"); curl_setopt($login, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"); curl_setopt($login, CURLOPT_TIMEOUT, 40); curl_setopt($login, CURLOPT_RETURNTRANSFER, TRUE); if ($proxystatus == 'on') { curl_setopt($login, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($login, CURLOPT_HTTPPROXYTUNNEL, TRUE); curl_setopt($login, CURLOPT_PROXY, $proxy); } curl_setopt($login, CURLOPT_URL, $url); curl_setopt($login, CURLOPT_HEADER, TRUE); curl_setopt($login, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); curl_setopt($login, CURLOPT_FOLLOWLOCATION, TRUE); curl_setopt($login, CURLOPT_POST, TRUE); curl_setopt($login, CURLOPT_POSTFIELDS, $data); ob_start(); // prevent any output return curl_exec ($login); // execute the curl command ob_end_clean(); // stop preventing output curl_close ($login); unset($login); } function curl_grab_page($site,$proxy,$proxystatus){ $ch = curl_init(); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); if ($proxystatus == 'on') { curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, TRUE); curl_setopt($ch, CURLOPT_PROXY, $proxy); } curl_setopt($ch, CURLOPT_COOKIEFILE, "cookie.txt"); curl_setopt($ch, CURLOPT_URL, $site); ob_start(); // prevent any output return curl_exec ($ch); // execute the curl command ob_end_clean(); // stop preventing output curl_close ($ch); }

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  • Accessing the value of an input element with XPath in an XSLT

    - by asymmetric
    Hi! I'm developing a web app that has a button that triggers an XSLT transformation of the document DOM, with a stylesheet fetched via AJAX. Here's a portion of the HTML: <html> <head> <title>Static Javascript-based XMR Form Creator</title> </head> <body> <h1 id="title">Static Javascript-based XMR Form Creator</h1> <div class="opt_block" id="main_opts"> Form name <input type="text" id="form_name" /> Form cols <input type="text" id="form_cols" size="3" maxlength="3" /> </div> <button id="generate">Generate source</button> <textarea rows="20" cols="50" id="xmr_source" ></textarea> </body> Inside the stylesheet, I want to access the value attribute of the first input field, the one with id form_name. The XSLT looks like this: <xsl:template match="/html/body/div[@id = 'main_opts']" > <form> <xsl:attribute name="fname"> <xsl:value-of select="input[@id = 'form_name']/@value" /> </xsl:attribute> </form> </xsl:template> The problem is that the XPath that should do the work: <xsl:value-of select="input[@id = 'form_name']/@value" /> returns nothing. Can anyone help?

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  • How to make Entity Key Mapping in Entity Framework like sql's foreign key?

    - by programmerist
    I try to give entity map on my entity app. But how can I do it? I try to make it like below: var test = ( from k in Kartlar where k.Rehber..... above codes k.(can not see Rehber or not working ) if you are correct , i can write k.Rehber.ID and others. i can not write: from k in Kartlar where k.Rehber.ID = 123 //assuming that navigation property name is Rehbar and its primary key of Rehbar table is ID && k.Kampanya.ID = 345 //assuming that navigation property name is Kampanya and its primary //key of Kampanya table is ID && k.Birim.ID = 567 //assuming that navigation property name is Birim and its primary key of Birim table is ID select k images you can see: also: You should look : http://i42.tinypic.com/2nqyyc6.png I have a table it includes 3 foreign key field like that: My Table: Kartlar ID (Pkey) RehberID (Fkey) KampanyaID (Fkey) BrimID (Fkey) Name Detail How can i write entity query with LINQ ? select * from Kartlar where RehberID=123 and KampanyaID=345 and BrimID=567 BUT please be careful I can not see RehberID, KampanyaID, BrimID in entity they are foreign key. I should use entity key but how?

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  • Custom array class with assotiated objects

    - by FancyDancy
    I have a simple structure, it's just an array of model's objects. For example, it's a users with books. @books = Book.find(:all, :include = :users) I need to check, does user have a book? I have written a helper method: def has_book?(user_id) @books.select{|b| b.user_id == user_id}.any? end Then, i need to get only books from selected library def in_library(n) @books.select{|b| b.library == n} end I have tried to make custom Array class: class BooksList < Array def initialize(books) self << books end # its my custom methods def has_book?(user_id) self.select{|b| b.user_id == user_id}.any? end def in_library(n) self.select{|b| b.library == n} end end It works, but i have only one problem. I can't access Book's assotiated object (user). So i can't write: @books = BookList.new(Book.find(:all, :include => :users)) @books.first.user.id # it says undefined method `user' for #<Array:0x104b43e08>

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  • C++: conjunction of binds?

    - by Helltone
    Suppose the following two functions: #include <iostream> #include <cstdlib> // atoi #include <cstring> // strcmp #include <boost/bind.hpp> bool match1(const char* a, const char* b) { return (strcmp(a, b) == 0); } bool match2(int a, const char* b) { return (atoi(b) == a); } Each of these functions takes two arguments, but can be transformed into a callable object that takes only one argument by using (std/boost)bind. Something along the lines of: boost::bind(match1, "a test"); boost::bind(match2, 42); I want to be able to obtain, from two functions like these that take one argument and return bool, a callable object that takes two arguments and returns the && of the bools. The type of the arguments is arbitrary. Something like an operator&& for functions that return bool.

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  • check if a url has anything after the domain name

    - by raklos
    im using asp.net c#. I want to check if the current url has anything after the domain name. e.g for the if the current url www.example.com/ or www.example.com i want to set a bool to true. if it has anything after i want to set it to false. e.g. www.example.com/stuff should return false.

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