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Is there a MySQL option/feature to track history of changes to records?
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It's subtle.
If the business requirement is "I want to audit the changes to the data - who did what and when?", you can usually use audit tables (as per the trigger example Keethanjan posted). I'm not a huge fan of triggers,...
Markdown and including multiple files
...an includes file? Specifically, I want to create a separate markdown file with links that I call often but not always (call this B.md), then when I link by reference in the md file I'm writing (A.md), I'd like it to pull the link from the other file (B.md) rather than from the end of the current fil...
why windows 7 task scheduler task fails with error 2147942667
...oblem. I have scheduled a task to lauch a batch file. When I run the task with option Run only when user is logged on everything works fine. but I want to run this task in background and hence i am running it using the option Run whether user is logged on or not . Now when i run the task it is no...
Force browser to clear cache
Is there a way I can put some code on my page so when someone visits a site, it clears the browser cache, so they can view the changes?
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CSS: Control space between bullet and
I'd like to control how much horizontal space a bullet pushes its <li> to the right in an <ol> or <ul> .
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What are the benefits of dependency injection containers?
I understand benefits of dependency injection itself. Let's take Spring for instance. I also understand benefits of other Spring featureslike AOP, helpers of different kinds, etc. I'm just wondering, what are the benefits of XML configuration such as:
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window.onload vs $(document).ready()
... ready event is specific to jQuery. The purpose of the ready event is that it should occur as early as possible after the document has loaded, so that code that adds functionality to the elements in the page doesn't have to wait for all content to load.
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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
I'm trying to understand the functionalities of these methods. Could you provide me a simple usecase to understand theirs semantics?
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Can a java file have more than one class?
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Yes, it can. However, there can only be one public top-level class per .java file, and public top-level classes must have the same name as the source file.
The purpose of including multiple classes in one source file is to bundle...
Prevent jQuery UI dialog from setting focus to first textbox
...licks a link. There are two textboxes (I only show the code for 1 for brevity) in that dialog div tag and it is changed to be a jQuery UI DatePicker textbox that reacts on focus.
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