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• mysql innodb:innodb_flush_method

  - by Daniel

  in the following link http://dev.mysql.com/doc/refman/5.1/en/innodb-parameters.html#sysvar_innodb_flush_method it says:Different values of this variable can have a marked effect on InnoDB performance. For example, on some systems where InnoDB data and log files are located on a SAN, it has been found that setting innodb_flush_method to O_DIRECT can degrade performance of simple SELECT statements by a factor of three. Why O_DIRECT could slow down the select statement?

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• Is there a command to test an SQL query without executing it? ( MySQL or ANSI SQL )

  - by Petruza

  Is there anything like this: TEST DELETE FROM user WHERE somekey = 45; That can return any errors, for example that somekey doesn't exist, or some constraint violation or anything, and reporting how many rows would be affected, but not executing the query? I know you can easily turn any query in a select query that has no write or delete effect in any row, but that can lead to errors and it's not very practical if you want to test and debug many queries.

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• NHibernate join and projection properties

  - by devgroup

  Hello, I have simple situation (like on the image link text) and simple SQL query SELECT M.Name, A.Name, B.Name FROM Master M LEFT JOIN DetailA A ON M.DescA = A.Id LEFT JOIN DetailB B ON M.DescB = B.Id How to achive the same effect in nHibernate using CriteriaAPI ?

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• Possible reasons for timeout when trying to access EC2 instance

  - by ming yeow

  I cannot SSH into my instance - Operation timed out. What could be the reasons why, and what can I do to resolve it? Rebooting normally takes a long time to take effect, and might just makes things worst UPDATE: It is not about permissions - i can log in normally just fine. I suspect it might be because of memory issues

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• Use of metadatatype in linq-to-sql

  - by jess

  Hi, I had asked this question http://stackoverflow.com/questions/2442149/adding-more-attributes-to-linq-to-sql-entity Now, when I add Browsable attribute to generated entity in designer,it works.But,when I use the MetaDataType approach,and add Browsable attribute in partial class,it does not work "I added a MetaDataType class, and added browsable attribute to property,but seems to have no effect"

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• How do I create dynamically text in a movie clip using as3?

  - by Rashawn

  I would like to create text animated like a comet. I would like to create a gravity effect, accelerate the movie clip on vector, set a starting position on stage and load the text from a xml file.

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• SQL Alter Table to Add a Column, does it do anything "scary"?

  - by Pselus

  I need to add a column to an existing table in my live sql database. I know how to use the ALTER command, but what I want to know is the effect this has on the table. For example,, if using SQL Management Studio, it claims that adding a column will "drop and recreate" the table. Will the ALTER table command do that as well? This table is CONSTANTLY accessed and VERY important so I want to make VERY sure of this before going forward.

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• Example of xargs' -x option in action

  - by Ole Tange

  GNU xargs has option '-x'. The man page says: -x Exit if the size (see the -s option) is exceeded. But xargs seems to not care if -x is set or not. I have been unable to make an example in which the -x has any effect at all. Please provide two examples in which the only difference is an added -x and that produce different output.

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• How to center viewport at center of the sphere

  - by satyam

  Hi I want to create panorama view with opengl in android. Is it possible using spherical view and centering viewpoint at the sphere center to show bounded image on screen. will this be good aproch , i havent used opengl but want to achive this effect in android Am i going in right direction , any pointers for this will be great help . thanx in advance.

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• Set Controls with arbitrary positions on CTabItem

  - by Daziplqa

  Hi Guyz, I am new to GWT, and I need to set the controls positions arbitrary on CTabItem. I've used the following code, but it seems that it had no positioning effect, it just add the component to (0, 0) Label userName = new Label(folder, SWT.NONE); userName.setText("username"); userName.setBounds(10, 200, 200, 50); item.setControl(userName);

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• CSS working fine in firefox but not displaying properly on IE?

  - by Karthik

  I have the desired effect on firefox, which is to display like this: _________ | title |__________________ | | | | | | | content here | | | | | | | | | ____________________________ but it simply displays a deformed rectangle in IE What could be the possible issues? EDIT: This is the border of a webpage. The title is on the smaller box on top of the bigger one. Here is the link to the webpage: http://picasso.shsu.edu/~kkk005/index.php?view=ArtworkCommentary&OPPID=OPP.34:019 This does not display properly on IE

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• [CSS] The padding style applying to <img> in IE7 is separate from FF3?

  - by Ricky

  Hi folks: I got a image like below with padding-right: 15px <td><img style=padding:0px 15px 0px 0px;... /> <td><td>another image<td/> But the effect shows on IE and FF is a bit different. Is the way to measure is separate? Thanks.

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• jquery - "click" on keypress?

  - by WonderBugger

  I have an ajax search form that works fine if you click "submit" in that you enter a zipcode, click the "Enter" button and up pops results instantly. I'm trying to make it so that if the user presses "enter" on the keyboard, it has the same effect. It looks like it's submitting, but no results come up... I tried: if($('#search').length) { $('#zipcode').keyup(function(e) { if(e.keyCode == 13) { e.preventDefault(); $('#search').submit(); } }); }

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• Texture mapping an NGon?

  - by user146780

  I'm not sure how to go about figuring out how to map texture cooridnates for a 2D NGon (N sided polygon) How can this be done? The effect i'm trying to achieve is for the texture to fit on the polygon and stretch out accordingly so the whole texture fits on it. Thanks

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• Handling GUI after clicking the Back Button

  - by konzepz

  I use a small JS to mark entries as Read upon click, before the user goes to the entry page. When the user clicks Back, the removeClass I used doesn't seem to keep its effect. Is there a way to force this on Back behavior?

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• script attributes

  - by Alex Ivasyuv

  Hi, I need to control some script elements, that's why I want to add class attribute to do it. But, w3c says that it's invalid. Some effect, if I add rel or id attribute. Any other ideas how I can access appropriate script tag? Doctype: XHTML 1.0 Strict Thanks,

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• How to make the WebBrowserto scroll up when new content is appended to the bottom of the page.

  - by Java Doe

  In order to achieve this effect, I would like to know how I can make the WebBrowser to scroll up when new content is added to the HTML page? "Allow more entries to be displayed in the view: When the user clicks more, additional entries should be displayed in addition to the ones which are already displayed. The code should cause the UI to scroll such that the first entry of the "more" set is on top". I am using com.ibm.rcp.browser.service.WebBrowser which is similar to SWT WebBrowser.

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• Getting a perspective view with DIVs?

  - by Legend

  I was wondering if there is a way to do an effect similar to this, except that instead of using images, I would use custom divs? I tried, replacing the img tag in that page to a div tag but it stops working. Any suggestions?

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• mvc DataAnnotations how to make field no editable in 3.5

  - by frosty

  I have a few field in my entity that i wish to be non-editable. Looking in the docs it seems like "EditableAttribute" would do the trick. However this is only 4.0 Just wondering if there are other attributes that would have the desire effect. So be clear, i have a field called "DateRegistered" i wish to display this as string not text field using "Html.EditorFor"

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• apache mod_rewrite making permanent url problem

  - by Yc Zhang

  In file .htaccess <IfModule mod_rewrite.c> RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^\/*get_post\/(.*)$ get_post.php?slug=$0 [L] </IfModule> If I type http://example.com/get_post/abcde, I get an empty array of $_GET variable. How can I achieve the effect like this: http://example.com/get_post?slug=abcde

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• Neural Network 0 vs -1

  - by Louis

  I have seen a few times people using -1 as opposed to 0 when working with neural networks for the input data. How is this better and does it effect any of the mathematics to implement it? Edit: Using feedforward and back prop Edit 2: I gave it a go but the network stopped learning so I assume the maths would have to change somewhere?

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• mail ,pdf icon images giving mirror impression in joomla

  - by Deepali

  IN joomla site , I made the replica of one joomla site. Just took the data from ftp and put it onto another server,its working fine. But the problem is when I click on mail or pdf icon images which are on every pages right top side ,its gives the mirror effect, for eg: subject:_____________________ but result is ____________:subject

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• Add effects to datagrid invalidate

  - by MooCow

  Is it possible to add an effect to a datagrid when I call invalidatelist to update the data? If it can be done, can the effects be selectively applied to only certain cells in the grid? The grid is showing an array with some nested array in it. I'm using an int counter to keep track of the nested array element position. When the counter is advanced, I tell the grid to update using invalidatelist.

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• It's there a way to reload a greasemonkey script ?

  - by Shady

  It's there a way to reload a script from greasemonkey ? For example: When I enter on some specific website, the script from the greasemonkey works correctly, but when I change the page (asp in the website I guess), the script doesn't reload to take effect... How can I solve it?

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• Aligning a link beside a h2 heading

  - by jme1988

  Really simple question, how do I force a link to appear inline with a h2 heading? I have the following code : http://jsfiddle.net/jezzipin/6DpPX/ and I'd just like the 'Back to top' link to appear inline with the 'Social Media' heading but everything I try doesn't seem to work. Even the use of spans. Any help would be greatly appreciated. jme1988 N.B. Just to be clear, this is the effect I am after:

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