Search Results

Search found 13415 results on 537 pages for 'variable caching'.

Page 75/537 | < Previous Page | 71 72 73 74 75 76 77 78 79 80 81 82  | Next Page >

• Usage of std::string.append causes "Stack around the variable 'result' was corrupted"

  - by Yan Cheng CHEOK

  I have the following code : std::string Utils::get() { std::string result; result.append(1, 'x'); result.append(1, 'x'); result.append(1, 'x'); return result; } I expect 'xxx' to be returned. However, when I run under debug mode, I get the warning "Stack around the variable 'result' was corrupted" Am I using append function the wrong way?

  Read the article

• Can we view objets in the JVM memory?

  - by Sebastien Lorber

  Hey, At work we found that on some instances (particulary the slow ones) we have a different behaviour, acquired at the reboot. We guess a cache is not initialized correctly, or maybe a concurrency problem... Anyway it's not reproductible in any other env than production. We actually don't have loggers to activate... it's an old component... Thus i'd like to know if there are tools that can help us to see the different objets present in the JVM memory in order to check the content of the cache... Thank you!

  Read the article

• Why does Cache.Add return an object that represents the cached item?

  - by Pure.Krome

  From MSDN about the differences between Adding or Inserting an item the ASP.NET Cache: Note: The Add and Insert methods have the same signature, but there are subtle differences between them. First, calling the Add method returns an object that represents the cached item, while calling Insert does not. Second, their behavior is different if you call these methods and add an item to the Cache that is already stored there. The Insert method replaces the item, while the Add method fails. [emphasis mine] The second part is easy. No question about that. But with the first part, why would it want to return an object that represents the cached item? If I'm trying to Add an item to the cache, I already have/know what that item is? I don't get it. What is the reasoning behind this?

  Read the article

• Asking browsers to cache as aggressively as possible

  - by balpha

  This is about a web app that serves images. Since the same request will always return the same image, I want the accessing browsers to cache the images as aggressively as possible. I pretty much want to tell the browser Here's your image. Go ahead and keep it; it's really not going to change for the next couple of days. No need to come back. Really. I promise. I do, so far, set Cache-Control: public, max-age=86400 Last-Modified: (some time ago) Expires: (two days from now) and of course return a 304 not modified if the request has the appropriate If-Modified-Since header. Is there anything else I can do (or anything I should do differently) to get my message across to the browsers? The app is hosted on the Google App Engine, in case that matters.

  Read the article

• Playframework sends 2 queries for fetched query

  - by MRu

  I currently have problems with the JPA at the play framework 1.2.4. I need to have a UserOptions model in a separate database and want to join it lazyly cause its only needed in one query. In this query I want to load the options eagerly and by searching I found out that can only be done by using a join query. If I use eager instead oder lazy, everything would be fine by using User.findById() and the options and the user is found in one query. But play sends two queries when I use a 'left join fetch' query. So heres the query: User.find(" SELECT user FROM User user LEFT JOIN FETCH user.options options WHERE user.id = ? ", Long.parseLong(id)).first(); And here the models: @Entity public class User extends Model { @OneToOne(mappedBy = "user", fetch = FetchType.LAZY) public UserOptions options; // ... } @Entity public class UserOptions extends Model { @OneToOne(fetch = FetchType.LAZY) public User user; } The question is why play sends two query for the fetch query? Thanks in advance

  Read the article

• How to Prevent an Applet from Unloading across web pages?

  - by Francis Shanahan

  I have a large applet that takes some 40 seconds to initialize (cabs are cached so ignore download time for this question). The issue is, if the user goes to Page A which launches the applet (single window) and then navigates to page B, the applet is unloaded. If the user goes back to Page A, they incur the 40 seconds init time once again. I'd like to be able to launch the applet, incurring the 40 seconds init time once and only once. The applet needs to reside inside a single browser window (the same window as my web application). In other words, I cannot launch the applet in a popup. Does anyone have any creative ideas around how to prevent the applet unloading?

  Read the article

• how to declare variable in PostgreSQL

  - by user307880

  I try to declare a variable in a code like this, but it's doesn't work. Can you tell me what's the problem? ERROR: syntax error at or near "VARCHAR" LINE 2: p_country VARCHAR; DECLARE p_country VARCHAR; p_country : = ''; SELECT p_country;

  Read the article

• rails - caches_action expire_action

  - by mark

  Hi I want to expire a cached action and wondered how to generate the correct reference. #controller caches_action :index, :layout => false #generates this fragment which works fine views/0.0.0.0:3000/article/someid/posts #sweeper ... expire_action article_posts_path(:article_id => post.article) # results in this Expired fragment: views//en/article/someid/posts (0.0ms) So this is almost ok, except the host is missing. What do I do that supplies this to the expire_action method? Thanks in advance.

  Read the article

• Are scripts hosted at Google cached accross multiple sites?

  - by Marko Ivanovski

  If I visit 1 website www.abc.com that has a reference to say jQuery hosted at Google Code, and then I visit a 2nd website www.xyz.com that has the same reference - will the file be cached across both websites? i.e. will it re-download it on the 2nd website, or just use it from cache?

  Read the article

• Accessing property of object vs variable in javascript

  - by Samuel

  Why when I try to access a variable that don't exist, javascript throw an exception but when I try to access a property that don't exist in an object, javascript returns an undefined object? For example, this case returns an undefined object: function Foo(){ console.log(this.bar); } Foo(); But, in this other example, javascript throw an exception: function Foo(){ console.log(bar); } Foo(); ReferenceError: bar is not defined

  Read the article

• Set time part of datetime variable to 18:00

  - by maxt3r

  Hi. I need to set datetime variable to two days from now but it's time part must be 18:00. For example if i call getdate() now i'll get 2010-05-17 13:18:07.260. I need to set it to 2010-05-19 18:00:00.000. Does anybody have a good snippet for that or any ideas how to do it right?

  Read the article

• In ASP.NET, can too many CacheDependency instances affect scalability?

  - by frankadelic

  I am building an ASP.NET application. Within each ASPX page, we are outputting inline snippets of HTML that are pulled from static text files. Similar to the example shown here: http://www.dotnetcurry.com/ShowArticle.aspx?ID=331 As in the article, we store the contents of the files in HttpRuntime.Cache with a CacheDependency pointing to the included file. For each cached file, the operating system needs to monitor a file for changes. Is this going to be a potential scalability problem? Does Windows 2008 have a maximum number of file change monitors?

  Read the article

• Getting a variable from an object with a string in PHP

  - by Josh K

  I have a Persons object. It has a variable name accessible by saying $p = new Person('John'); echo $p->name; Now I have a string. $name = 'name'; I need to get $p->name using $p and $name. Something like echo $p->[$name];

  Read the article

• Java Build Path - Add External JARs' and Add Variable

  - by Lakshman

  What is the difference between Java Build Path - Add External JARs Button and Add Variable Button Functionality, Why its required. Please explain in detail.

  Read the article

• SQL Server: Declaring variable type based on a column type

  - by Bernard Dy

  In Oracle's PL-SQL, you can declare a variable and define its type based on a table column: declare var1 table.column%TYPE; Is it possible to do something similar in MS SQL Server? I searched but could not find a duplicate for this question. If there is one, please let me know and I'll refer to it and delete this.

  Read the article

• AppFabric serialization problem.

  - by jandark

  I am trying cache a class instance with AppFabric but it return class instance with empty members. The reason is DataContract Attribute. My class is marked with [Serializable] and [DataContract(Name = "TestClass", Namespace = "CustomNameSpace.TestClass")] attributes. Problem solving if I mark all properties with DataMember or remove DataContract attribute. But I do not want to remove DataContract attributte because of other serialization needs (such as json or something else) Or I do not want to add DataMember attribute to other classes. (a lot of) Do you have any idea to solve that problem ? Thanks.

  Read the article

• Difference between redirecting to a page and coming to the same page after pressing back button

  - by Mac

  Actually i have a page in which i am not using cache by using this code HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1)); HttpContext.Current.Response.Cache.SetValidUntilExpires(false); HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches); HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache); HttpContext.Current.Response.Cache.SetNoStore(); now i want to know is there any difference between coming to this page using a proper link or coming back using browser back button or is there any way to detect this.

  Read the article

• The question about the 89c52 Serial ports receive Variable-length strings

  - by shuil

  The strings` length is less than 30 but Variable. I use the following code, but the SComAssistant only can receive two Character. ================================================================= code url http://fayaa.com/code/view/11190/

  Read the article

• running query and putting result into a variable ACCESS

  - by every_answer_gets_a_point

  i am running a query from vba editor access: "select max(somerow) from sometable" i want to put the result of this query into a variable. how do i do it?

  Read the article

• My mobile does not cache , but i have a manifest file,...

  - by Ploetzeneder

  Hello, i have now put the site on: http://www.ploetzeneder.eu/Dateien/test/index4.html the manifest is there: http://www.ploetzeneder.eu/Dateien/test/app-cache-demo.manifest Why does it not work? The Webserver where the relevant problem has this url: http://www.pharao.mobi/WebAppproblem/ Username is the Username Passwort is the Password the problem is on index4.html where all images should be cached but are not

  Read the article

• CodeIgniter - accessing $config variable in view

  - by PHP thinker

  Pretty often I need to access config variables in views. I know I can pass them from controller to load-view(). But it seems excessive to do it explicitly. Is there some way or trick to access $config variable from CI views without disturbing controllers with spare code?

  Read the article

• Error in jsp program calling servlet variable

  - by megala

  hi i created one webapplication project.It containe one servlet file jsp file. I created one string variable in servlet and assign some value like /* sampleservlet.java *******/ String s=" WELCOME" My constraints I want to display the string in my jsp file.so that i import the servlet file inj jsp and i created object as ---call--- jsp file contain following coding <%sampleservlet call ;% <%call.s% But it shows error how to solve this?

  Read the article

• Merge two data frames together that have the same variable names and data types

  - by Brandon

  I have tried the merge function to merge two csv files that I imported. They both have the same variable names and data types but each time I run merge all that I get is an object that contains the names of the two data frames. I have tried the following: # ex1 obj <- merge(obj1, obj2, by=obj) # ex2 obj <- merge(obj1, obj2, all) and several other iterations of the above. Is merge the correct function? If so, what am I doing wrong?

  Read the article

• Query on the scope of local variables in C

  - by darkie15

  All, Consider the following code: void func(void) { int a; printf ("%d", a); } int main(int argc, char **argv) { int a = 3; func(); printf("%d", a); } According to my understanding, the output should be: <junk value><3> Can anyone please confirm my understanding? My basic query is, does the compiler refer to the outer scope for a variable that has been declared but not defined? Regards, darkie

  Read the article

• save Date Number in PHP variable.

  - by Denoteone

  This question goes along with another one of my post that I already accepted How do I get the "date number" in php 2010-08-24 20:00:00.000 I want to assign the current date number to a variable $current_date_num so I can use it in my query to compare what is already in the database. $query ="SELECT * FROM Reservations WHERE [Room_ID] = '$field' AND [Meeting Start] > '$current_date_num' ORDER BY [Meeting Start] asc ";

  Read the article

< Previous Page | 71 72 73 74 75 76 77 78 79 80 81 82  | Next Page >