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

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• Best practice regarding returning from using blocks

  - by abatishchev

  Which way is better practice: return a value from a method inside an using statement or declare a variable before, set it inside and return it after? public int Foo() { using(..) { return bar; } } or public int Foo() { var b = null; using(..) { b = bar; } return b; }

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• retrieving row based on input

  - by christine33990

  public void RemoveTask(int index) { SQL = "DELETE FROM Task where (...) = " +index; dbConn.Open(); dbCommand = new SqlCeCommand(SQL, dbConn); dbCommand.ExecuteNonQuery(); dbConn.Close(); } What i want to do is to delete the record based on the index which specified the row number but I don't know what function or variable should be used ( note the blank ), i try something like rowNum but it does not work. any help will be appreaciated

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• String replacement in batch file

  - by Faisal

  We can replace strings in a batch file using the following command set str="jump over the chair" set str=%str:chair=table% These lines work fine and change the string "jump over the chair" to "jump over the table". Now I want to replace the word "chair" in the string with some variable and I don't know how to do it. set word=table set str="jump over the chair" ?? Any ideas?

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• Implementing dynamic scope when using CPS as intermediate language

  - by asandroq

  I am currently studying the implementation of programming languages and became interested in using Continuation-Passing Style as the intermediate language of the compiler. I also want to implement limited dynamic scope (for exception-handling or Scheme parameter objects) but I cannot find the relevant literature. I think it can be done with a separate environment passed as a variable to every closure, but this solution seems ugly to me. Could anyone point me to the relevant literature, or give me an idea of how this can be done?

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• Modifying multiplying calculation to use delta time

  - by Bart van Heukelom

  function(deltaTime) { x = x * 0.9; } This function is called in a game loop. First assume that it's running at a constant 30 FPS, so deltaTime is always 1/30. Now the game is changed so deltaTime isn't always 1/30 but becomes variable. How can I incorporate deltaTime in the calculation of x to keep the "effect per second" the same?

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• PHP Load variables from external file

  - by Adrian M.

  Hello, How can I import a variable from an external file? What I want to do is to have a configuration file in which I can write all my website settings and then to import these settings to every file, so I can set the website skin and things like that.. How can I do this? Thanks!

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• MongoDB initialization error in Rails

  - by rube_noob

  I have an initialization script to set up my MongoDB connection in the config/initialization directory. It is my understanding that these initializers run after all of the plugins are initialized. The problem I am having is that when a particular plugin I am using is initialized, it tries to access the mongodb before I have set it up. I get this error: uninitialized class variable @@database_name in MongoMapper My question is: Where can I initialize Mongodb that will run after the mongodb gem has been loaded and before any of the plugins are initialized?

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• Wrapping content in td

  - by Hulk

  This following code is used to wrap up the contents within the textarea <td> <textarea rows = "8" cols = "18" border ="1" class="input" style="border: none;overflow:visible;width:100%;" maxlength="5">'+col_det[data]+'</textarea> </td> How to implement the same for a tag i.e, the conetnt within td tag should be wrapped <td>%s</td>,(sum variable) Thanks..

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• Howto ignore specific undefined variables in Pydev (eclipse)

  - by chris.nullptr

  I'm writing a crossplatform python script on windows using Eclipse with the Pydev plugin. The script makes use of the os.symlink() and os.readlink() methods if the current platform isn't NT. Since the os.symlink() and os.readlink() methods aren't available on the windows platform Pydev flags them as undefined variables--like so: Is there a way to explicitly ignore certain undefined variable name errors (e.g. os.symlink())?

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• Is there a production ready web application framework in Python?

  - by peperg

  I heard lots of good opinions about Python language. They say it's mature, expressive etc... Are there any production-ready web application frameworks in Python. By "production ready" I mean : supports objective-relational mapping with caching and declarative desciption (like JPA, Hibernate etc..) controls oriented user interface support - no HTML templates but something like JSF (RichFaces, Icefaces) or GWT, Vaadin, ZK component decomposition and dependency injection (like EJB or Spring) unit and integration testing good IDE support clustering, modularity etc (like Terracota, OSGi etc..) there are successful applications written in it by companies like IBM, Oracle etc (I mean real business applications not Twitter) could have commercial support Is it possible at all in Python world ? Or only choices are : use Python and write everything from the bottom (too expensice) stick to JEE buy .NET stack

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• calling ruby with ajax

  - by danwoods

  Hello all, I'm wanting to check a ruby session variable via ajax. I'm familiar with ajax calling php, is calling a ruby file similar?

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• Launch Scala REPL programatically?

  - by David Crawshaw

  I would like to launch a Scala Swing application from the command line, then after the application is started, drop into the Scala REPL to use as a control interface. Ideally I would also like to pre-bind some variable names. Even better would be using a Java2D terminal emulator for the REPL, but I couldn't find anything appropriate. Does the Scala REPL have a public API?

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• How to include/require/load a file in ruby with instance variables

  - by doctororange

  I would like to put a large variable definition in a separate file for the sake of getting it out of the way. I must be doing something wrong though, because my puts call isn't putting anything out. my_class.rb: class foobar def initialize require 'datafile.rb' puts @fat_data end end datafile.rb: @fat_data = [1,2,3,4,5,6,7,8,9,10] Can you use require this way?

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• Jquery Effect Onunload

  - by j3frea

  I would like to use the jquery slideUp effect when the user navigates away from the page just to make the page look cool as it closes. I assume that I should use the onunload event but how can I delay the page closing long enough for the effect to run to completion. One of the options that came to mind is effectively hijacking the page closing function, storing it in some variable and then executing it once I had run my effect but I have no idea how I would do that. Any suggestions or alternative ideas are more than welcome

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• How to get output of a webpage in ActionScript 3

  - by Dimitris Baltas

  Let's say this page www.example.com/mypage returns some html that I want to parse in Actionscript. How do i call this page from Actionscript while getting back the response in a string variable?

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• Get the name of the currently executing method in Ruby

  - by salt.racer

  So $0 is the env variable for the top level Ruby program ... but is there one for the current method?

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• Vertically and Horizontally Center Image inside a Div, if you don't know Image's Size?

  - by viatropos

  If I have a fixed sized container div, and an unknown sized image, how do I horizontally and vertically center it? using pure css using JQuery if css can't do it This answer makes sense for fixed width images, but not variable ones. Thanks for the help!

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• Java: how to access assignments in try-catch -loop?

  - by HH

  $ javac TestInit2.java TestInit2.java:13: variable unknown might not have been initialized System.out.println(unknown); ^ 1 error Code import java.util.*; import java.io.*; public class TestInit2 { public static void main(String[] args){ String unknown; try{ unknown="cannot see me, why?"; }catch(Exception e){ e.printStackTrace(); } System.out.println(unknown); } }

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• plist vs static array

  - by morticae

  Generally, I use static arrays and dictionaries for containing lookup tables in my classes. However, with the number of classes creeping quickly into the hundreds, I'm hesitant to continue using this pattern. Even if these static collections are initialized lazily, I've essentially got a bounded memory leak going on as someone uses my app. Most of these are arrays of strings so I can convert strings into NSInteger constants that can be used with switch statements, etc. I could just recreate the array/dictionary on every call, but many of these functions are used heavily and/or in tight loops. So I'm trying to come up with a pattern that is both performant and not persistent. If I store the information in a plist, does the iphoneOS do anything intelligent about caching those when loaded? Do you have another method that might be related?

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• url helper diificulty

  - by user281180

  Can anyone help me for the following: I am having the error message. How can I correct that? Error 4 Use of unassigned local variable 'url' on the url.Action... UrlHelper url; string fullUrl = url.Action( "Details", "test", new {test.ID } ); Thanks

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• SimpleXMLElement to PHP Array

  - by Codex73

  Variable $d comes from file_get_contents function to a url. $answer = @new SimpleXMLElement($d); Below is output of the print_r($answer): SimpleXMLElement Object ( [Amount] = 2698 [Status] = OK [State] = FL [Country] = USA ) How can I retrieve value of each element and add to an array? can't figure it out.

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• Concat E4X expressions in ActionScript 3

  - by loto

  Is there any way to concatenate E4X expressions? If I store "half" a path in a variable, can I concatenate the way I do with Strings?

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• window.open and searchpopop

  - by Diesel Draft

  Hi all, We are use window.open for open popup. But then we want find it and close. Unfortunately we can`t save this popup handler to variable.

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• How to pass output of a linq query to another form in C#

  - by Ani

  I have a Linq query and I want to pass the ouput (userid) to another form for further processing. var userid = from auser in allusers.Users where auser.Username == nameString select new { id = auser.UserId }; so only 'UserId' is stored in variable 'userid' and I want to use this value in another form. Is there any way we can do this. Thanks, Ani

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• Extending the SketchFlow player

  - by Aravind

  I would like to add some controls to the SketchFlow player. For example, I would like to add a combo box with a list of values for a specific variable, and selecting a value will make a specific screen/state show up in the SketchFlow player canvas. Is this possible? I have seen that using the PlayerContext allows access to some controls/events in the Player, but I am not sure how extensible the Player itself is.

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